This Week in CFD

News & Events

Software

  • Desktop Engineering shares information about ANSYS Fluent 17.0 including its new UI and workflow that promises 12% fewer clicks. The article includes a link to an ANSYS webinar for those who want to learn more.
  • Intelligent Light describes their work on in-situ post-processing [I realize that phrase I just wrote is an oxymoron] in which solution data is saved and co-processed [that’s better] while the solver is running resulting in vast times and storage savings.
  • IL also summarized their participation in the recent AIAA Hover Prediction Workshop.
  • ESI launched ESI Cloud, a software as a service (SaaS) offering that includes OpenFOAM for CFD and is based on technology acquired from Ciespace. Read more about this in Desktop Engineering.

Applications

Numeca's Wind Tunnel Free app for iPhone. See link below.

Numeca’s Wind Tunnel Free app for iPhone. See link below.

ANSYS simulation of a reactor vessel. Image from LEAP CFD blog. See link above.

ANSYS simulation of a reactor vessel. Image from LEAP CFD blog. See link above.

Polygonal Chocolate

Alert reader and meshing maven Dr. Daniel Zaide discovered these polygonal chocolate bars from Vancouver chocolatier Beta 5. Not only is the chocolate beautifully faceted, but the wrapper itself is meshed.

I can only infer from the fact that he sent us their Dark Force Bar (66% dark chocolate) that he’s making a Star Wars themed statement about where meshing falls in the CFD galaxy. Also, I’m finding it difficult to keep sticky chocolate fingerprints off my keyboard. Thank you, Dr. Zaide.

The Dark Force Bar from Vancouver chocolatier Beta 5. See link above.

The Dark Force Bar from Vancouver chocolatier Beta 5. See link above.

P.S. Candy and other meshy gifts will indeed get you on our friends list.

Bonus: Gratuitously faceted beer making robot: the BrewBot. No one has sent us one of these. Yet.

Faceted customization of a BrewBot, a beer making robot. Image from brewbot.io. See link above.

Faceted customization of a BrewBot, a beer making robot. Image from brewbot.io. See link above.

 

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I’m Steve Karman and This Is How I Mesh

Steve Karman, Staff Specialist on the Applied Research Team.

Steve Karman, Staff Specialist on the Applied Research Team.

I’ve only been a Pointwise employee for just over a year, but my history with Pointwise and the staff goes back before the company was formed. I was in the CFD group at General Dynamics when the executive team (John C., John S. and Rick M.) was hired. I was dabbling in structured mesh generation and trying to develop Euler and Navier-Stokes codes at the time. As the Gridgen development proceeded I was simultaneously applying the tools to generate meshes about an F-16 configuration. As such, I am proud to claim the moniker of “Alpha” tester for the early versions of Gridgen.

This was distributed processing in the day. We were located in Fort Worth, TX working on DEC Vax computers in Palo Alto, CA at NASA Ames and displaying graphical results on a Tektronix 4014 terminal which used thermal paper for hard-copy output. The outcome of our efforts resulted in a technical paper presented at an AGARD (Advisory Group for Aerospace Research and Development; an agency of NATO) conference in southern France. We believe this paper was the first publication of a CFD solution for a full aircraft configuration.

As for my background, I received my B.S. & M.E. in Aerospace Engineering at Texas A&M University. I began working at General Dynamics in 1983 and continued with my education part time at the University of Texas at Arlington, receiving my Ph.D. in Aerospace Engineering in 1991. I worked at GD (which became Lockheed and then Lockheed Martin) for 20 years. During my time at GD I became known for the development of SPLITFLOW, a Cartesian-grid Euler/Navier-Stokes code with automatic mesh generation. In 2003 I accepted a research professor position the University of Tennessee at Chattanooga. I performed mesh generation research and taught two graduate level courses in mesh generation. Eventually I became a tenured full professor. In 2014 I decided to leave UTC and was hired by Pointwise to assist with advanced meshing techniques on the Applied Research Team.

  • Location: Fort Worth, TX
  • Current position: Staff Specialist on Applied Research Team
  • Current computer: Apple iMac Workstation: Retina 5K, 27-inch, 4 GHz Intel Core i7, 32 GB 1600 MHz DDR3, AMD Radeon R9 M290X 2048 MB; Apple MacBook Pro (personal laptop): Retina, 15-in, 2.5 GHz Intel Core i7, 16 GB 1600 MHz DDR3, Intel Iris Pro 1536 MB
  • One word that best describes how you work: Relentless

What software or tools do you use every day?

It seems like I always have multiple tabs open in MacVim on my laptop. I mostly compile code on the command line in terminal windows, but occasionally debug in Xcode. Visualizing meshes is a must. I like to view them using FieldView most of the time. I have VisIt and ParaView, but tend to go back to FieldView. And, of course, I also use the version control software P4V by Perforce.

What does your workspace look like?

Steve's current workspace.

Steve’s current workspace.

As you can see I have an affinity for Apple products. I migrated from Windows while at UTC and have no desire to go back. The reason for multiple workstations is because I plan to perform research in parallel mesh generation. The older iMac was being retired and it was offered to me. Couldn’t let a future parallel compute node go to waste!

What are you currently working on?

Just as Chris Fouts mentioned last month, I am working on a new feature that is in support of the U.S. Air Force contract. It will make use of the style of meshing that was used by SPLITFLOW. Once implemented I hope this feature will be further expanded beyond the original intent.

I am also developing prototype code to perform high-order mesh elevation. Finite Element Methods (FEM) are seeing a tremendous increase in the CFD community. These methods have a rigorous mathematical framework and can achieve high orders of accuracy with a compact compute stencil. High order meshes are generally created by adding mid-edge and mid-face nodes to linear elements. The creation of high order meshes for fluid flow analysis is extremely difficult as the viscous layer elements are generally near highly curved boundaries. Simply inserting new nodes into the elements leads to invalid meshes. Therefore, some form of mesh curving in interior edges is required. I am exploring the use of an unstructured smoothing scheme I developed to curve these high-order meshes.

The basic mesh smoothing method used in the mesh curving project has already been implemented in another form in Pointwise version 18. There is a new algebraic normal extrusion method (not T-Rex) that I worked on with Mike Remotigue. We published an AIAA paper this past January describing the scheme (AIAA-2016-1671). This helps control the quality of the viscous layer elements during the extrusion process.

What would you say is your meshing specialty?

I would have to say that Cartesian hexahedral meshing is probably my specialty. It is a field I have been involved in since the GD days. The method is highly automated and allows for mesh adaptation. It is a very efficient means of discretizing far-field domains and is extremely fast. Plus, the hierarchical data structures can be used for a variety of purposes, not just for creating Cartesian aligned elements. In fact, there are Octree data storage routines in Pointwise that I contributed several years ago.

Any tips for our users?

I will pass along two pieces of advice that were given to me. Number one is learn how to use the “Layer” manager in Pointwise. It can be a great time saver for big projects. I personally do not work on many big projects, but the ability to manage all the different mesh objects can be very useful. The second tip would be to consider using the scripting language in Pointwise called Glyph. I took the scripting course last year because I knew I would need to know how to write scripts for code development. It is extremely handy to have a script for common repetitive tasks.

What project are you most proud of and why?

I am really excited to see how the work I am contributing on the Air Force contract turns out. I think it will be an extremely useful capability and will lay the ground work for similar meshing capabilities in other parts of the Pointwise product.

I am also excited about the high-order meshing project. I see the use of this branch of CFD analysis increasing rapidly. There is a definite need for robust methods for obtaining these curved meshes. This will also require the methods to be ported to parallel processing environments (I will put that extra iMac to use).

What CFD solver and postprocessor do you use most often?

As mentioned previously, I use FieldView on a daily basis to examine meshes. There is no better debugging tool for mesh generation than the visual inspection of the mesh. I don’t use many CFD solvers in my current work. When needed, though, I tend to use one of the Euler or Navier-Stokes solvers I developed while at UTC.

Are you reading any interesting technical papers we should know about?

Being active in AIAA I am constantly looking at mesh generation papers at conferences and in the AIAA Journal. These have direct relevance to the Aerospace community.  I attend the International Meshing Roundtable (IMR) yearly and often find interesting papers that target a different mesh generation community. It provides an interesting and different perspective on meshing problems.

Do you plan on attending any conferences or workshops this year?

I attended the AIAA SciTech 2016 conference at the beginning of the year in San Diego. I presented the paper mentioned earlier. I serve on the Fluid Dynamics Technical Committee (FD TC) and the TC has several meetings that take place during the conference. I volunteered to help organize the technical sessions for the FD TC for the 2017 SciTech conference to be held in Grapevine, TX.  I am also the liaison from the Fluids TC to the Meshing, Visualization and Computational Environments TC. I plan to attend the Aviation conference in June in Washington, D.C. and plan to attend the International Meshing Roundtable conference in the fall.

What do you do when you’re not generating meshes?

This may seem uncommon for an engineer, but I have been involved in officiating for swimming. I am a nationally certified USA Swimming official. This is the organization that manages club swimming for the U.S. This is also the organization that officiates for the U.S. Olympic Trials (no I have not officiated at the trials). I have officiated at club meets, middle school and high school meets and at college meets. I got involved in officiating when my youngest daughter swam and have continued. It turns out that a large percentage of the officials I have worked with on deck are engineers.

What is some of the best CFD advice you’ve ever received?

“Everyone trusts wind tunnel results except for the engineer running the tests. Nobody trusts the CFD results except for the engineer running the codes.”  There is some truth to those statements. Unfortunately, ignorance plays a major role in propagating these myths. In reality neither should be trusted without true validation and calibration. Experimentalists must validate and calibrate their wind tunnel equipment. Likewise, CFD practitioners need to validate and calibrate their codes. And in a strange sense the CFD practitioner needs to be “calibrated”. CFD is not a “black box”. It takes time to develop the knowledge to trust the results obtained with the processes that are followed.

If you had to pick a place to have dinner, where would you go?

I am not known to be too particular about where to eat. Having moved to Tennessee for 13 years I had a longing for two types of food. One is barbeque beef. It is mostly pork in the south. So I frequently treat myself to some Texas barbeque at Dickie’s. And the second is Whataburger.

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Summer 2016 Internships Now Open

We are now accepting resumes for engineering internships on our technical support, product development, and applied research teams.

You can read the full announcement on our jobs page.

Applying for an internship is easy:

  1. Read the announcement.
  2. Choose which team best matches your interests and goals.
  3. Email your resume to jobs@pointwise.com.

So that you might better understand our expectations, you might also want to read articles we’ve posted about resumes and hiring.

[Looking back on that list of articles it’s clear I need to write one that approaches the topic from a more positive perspective. Cranky? Who, me?]

Keep this in mind. We love our interns. They’ve done great work for us in the past and we’re certain summer 2016 will be the same. Help us find you. Apply today.

 

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This Week in CFD

CD-adapco + Siemens

One billion dollars [approx.] is an attention-getting amount of money.

The biggest CFD news of the week which you’ve all probably heard already was Siemens’ purchase of CD-adapco for $970 million (approx. 5x revenue). CD-adapco will be added to Siemens’ Digital Factory Division, specifically their PLM software line.

  • Industry analyst Monica Schnitger wrote about the deal here and here (from Siemens’ Analyst Call).
  • DEVELOP3D wrote about the transaction here. There’s an interesting line in their article that I’ll quote here: “The CFD market is one that’s seeing a lot of action at the entry level – we’ve seen a number of start-ups come online in the last few months. But as ever, the real money to be made in CFD is at the high-end.”
  • It’s on HPC-Wire and Bloomberg and TenLinks.

ANSYS, Exa, and now CD-adapco are publicly traded companies. I’m interested in your opinions on what that means for the rest of the vendors in the CFD market, especially the independents.

ANSYS 17.0

Our friends at ANSYS released ANSYS 17.0 with the tagline “Excellence Times 10” and featuring improvements across their entire suite of tools. Specifically for CFD, this software update includes UI enhancements, meshing improvements (see image below), robustness improvements for conjugate heat transfer, 90% efficient scalability to 129,000 cores, and more.

This surface mesh was generated by Volvo using ANSYS 17.0's automatic scripting capabilities. Image by Volvo from ANSYS. See link above.

This surface mesh was generated by Volvo using ANSYS 17.0’s automatic scripting capabilities. Image by Volvo from ANSYS. See link above.

Events

News & Jobs

  • “The internet’s favorite fluid dynamics blog,” FYFD, has launched a subscription campaign as the start of many new things coming in 2016 because the site’s author, Dr. Nicole Sharp, will be working on FYFD “full-time.”
  • You could win a quadcopter drone in Tecplot’s 2016 Plot Contest. Your plots are due by 31 March.
  • There’s a contract position for a CFD Engineer in the Detroit area.
  • Foam-U is advertising a PhD position in LES modeling of atomization.

Applications

  • Here’s part 3 of a series of articles on CFD and DCIM (data center information management) in which the term “the Tetris effect” is introduced. See image below.
  • [Sweet, rich, creamy] CFD for dairy products via Software Cradle.
Example of using CFD for data center thermal management. Image from The Data Center Journal. See link above.

Example of using CFD for data center thermal management. Image from The Data Center Journal. See link above.

Software

  • OpenCFD released OpenFOAM v3.0+. (From their website, “OpenFOAM+ uses the OpenFOAM Foundation version as a common code base, and offers wider functionality and platform support.”) This new release includes updates in meshing, physical models, and more.
  • Autodesk Meshmixer 3.0 was announced. [I infer nothing from the broken image link on that web page.]
  • GridPro v6.5 was released with UI and automation improvements. (See image below.)
  • Flow Science released FLOW-3D/MP 6.1, the HPC version of FLOW-3D.
  • OpenVSP 3.5.1 was released for parametric aircraft geometry.
  • I’ve just learned about ANAMESH, meshing software from French company Lemma.
Submarine grid in GridPro v6.5. Image from PDC. See link above.

Submarine grid in GridPro v6.5. Image from PDC. See link above.

Unstructured Abstraction

An exhibition celebrating the 80th anniversary of the group American Abstract Artists is a showcase of “the continued relevance and vitality of art that communicates directly through the eye, reaching our intellect and our emotions without words.”

Joanne Mattera, Chromatic Geometry 22, 2015. Image from artist's website. See link above.

Joanne Mattera, Chromatic Geometry 22, 2015. Image from artist’s website. See link above.

 

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I’m Chris Fouts and This Is How I Mesh

Chris Fouts, Staff Specialist on the Product Development Team.

Chris Fouts, Staff Specialist on the Product Development Team.

I guess you could say I’ve been working towards a career at Pointwise, Inc. since 1978. That’s when, growing up in the outskirts of Winston-Salem, North Carolina, I learned to program using my first computer, a TRS-80 Model 1 with an astonishing 4 KB of memory. Yes, four kilobytes of memory. I still remember the excitement of upgrading it to 16 KB the following year.

My love for computers was eclipsed by my fascination with space exploration, though, so I trekked down to Atlanta to pursue a Bachelor of Aerospace Engineering degree at Georgia Tech a few years later. It didn’t take long for the practicality of a career in the slowly dwindling space program to become readily apparent, however. Fortunately, the warm comfort of a glowing cathode ray tube was still there to console me, so I merged the two interests by obtaining a master’s degree with a focus on CFD, also from Georgia Tech.

Upon graduating, I was hired by the CFD group at General Dynamics, Fort Worth Division. During the interview process, I remember being impressed with the people and the work there. Confidentially, though, I think the thing that really sold me was seeing the group playing “flight” on the Silicon Graphics, Inc. (SGI) workstations over lunch time. That was my first time seeing “real-time” 3D graphics, and I was completely awestruck by it.

At GD/FW, I joined John Steinbrenner and John Chawner in developing the original Gridgen code. Rather, I should say the original Gridgen codes, since it was comprised of 5 separate programs at the time: Gridblock, Gridbound, Gridgen2D, Gridgen3D, and Gridvue3D. I was responsible for coding up the general architecture and graphics of the programs, while John and John did the heavier grid algorithm coding. It was at this time that I came up with the term “connector”, for better or for worse. Apparently, a fair number of people fall into the “worse” camp. Had I known that it would persist 30 years later, I might have given it a little more thought.

After the initial implementation of the Gridgen code base, I gave into the siren call of 3D graphics and took a job at SGI. I worked as a Systems Engineer providing pre-sales technical support for a few years (first in Dallas, then later in Atlanta) before finally joining the Inventor team as a developer. There I had a very small role in helping to shape and implement VRML (Virtual Reality Markup Language), may it rest in peace. I also authored a number of games for the SGI platform that some SGI users might be familiar with: bz, vroom, oort, and pointblank.

In the meantime, John Chawner and John Steinbrenner had obtained the rights to the Gridgen code and formed Pointwise, Inc.  In 1999, as SGI was disintegrating, John and John graciously took me back into the fold. After a few years of coming back up to speed with the Gridgen code, I realized that the original Gridgen architecture was straining to keep up with the ever growing list of features. That triggered a multi-year effort to rewrite Gridgen as the Pointwise code you hopefully know and love today. My role in that process has been to focus primarily on the general architecture, the scripting interface, and, my favorite part, the 3D graphics.

  • Location: Suwanee, GA
  • Current position: Staff Specialist
  • Current computer: Dell T3500 Workstation running Windows 7: Intel Xeon W3690 @ 3.47 GHz, 24 GB RAM, 500 GB hard drive + 256 GB SSD, nVidia Quadro 5000, ASUS PB278Q 27” (2560×1440), ASUS VE248 24” (1920×1080), Deck Legend keyboard (Cherry MX Clear); Apple MacBook Pro Retina 15” (2880×1800) Mid-2015, Intel i7 @ 2.5 GHz, 16 GB RAM, 500 GB SSD, Intel Iris Pro + AMD Radeon R9 M370X.
  • One word that best describes how you work: Engrossed

What software or tools do you use every day?

My primary development is performed on Windows, so Microsoft’s Visual Studio 2012 gets the bulk of my keystrokes. Test scripts in Glyph and development in Linux and OS X environments are all done in vim. Working from home, I use Pidgin to stay in touch with my co-workers. I use p4v to coordinate software changes with the rest of the development group. When I need to access the computers back in the Fort Worth office, I use TightVNC. Finally, Pandora keeps a steady stream of jazz funk and contemporary jazz going in the background.

What does your workspace look like?

Chris's current workspace.

Chris’s current workspace.

I have the good fortune of being able to work from home. My commute consists of walking down the stairs, with our cat posing the only traffic concern. Yes, I do get dressed for work every day, albeit with a casual dress code. My workspace is dim, as evidenced by the above picture (and that’s with the overhead light on, which is rarely the case). As such, I’m a big fan of backlit keyboards. My other favorite part of my office is my Steelcase Leap chair. Considering how much time I’ve spent in it over the years, it has definitely been a worthwhile investment. Like my desk, the rest of the office is pretty much chaos, but I do mostly know exactly where everything is.

What are you currently working on?

I’m currently working on new features that aren’t ready to be announced at this point, unfortunately. I can say that it is in support of the U.S. Air Force contract that Pointwise was awarded last year. The new functionality lays down the foundation for dealing with complex configurations that are not currently easily handled today, so I’m excited to see what our users will be able to do with it once it is released.

What would you say is your meshing specialty?

Since I do not spend much time actually generating meshes other than when testing or debugging an issue, I cannot really claim a specialty. The phase “Jack of all trades, master of none” really applies to me. If I was hard pressed to name one, though, I would go with automation. The same spatial abilities that help me with 3D graphics are useful when trying to encapsulate grid geometries in script commands.

Any tips for our users?

Embrace scripting. I see a lot of requests for new features that can be solved with a relatively simple script. While I recognize that a script is not quite as convenient as having an integral feature, the Glyph language can be used to add tailored functionality and to speed up repetitive tasks. The “tailored functionality” aspect of this cannot be oversold. When a new feature is requested, the actual implementation may be different is some ways from the original request (due to a large number of factors). With a script, you can control exactly how you want the operation to behave based on your unique needs.

What project are you most proud of and why?

First, I’m extremely proud of how Pointwise has turned out. It was a big undertaking to rewrite the Gridgen code from scratch, but I couldn’t be more pleased with the product so far. I believe it has put us in a position to add new features much more quickly and easily than we could in the past.

For something more specific, I’m proud of how the Undo feature was implemented. One of the common approaches to add undo capabilities is to write a reverse operation for every operation that is created. For something like grid generation where you have complex non-linear operations involved, that just is not practical. Instead, we were able to tie into the main mechanism used internally to propagate changes between entities. Since this communication has to happen regardless of undo, we get undo capability for minimal effort. This speeds up the development process in adding new operations since we do not have to take time to develop a matching reverse operation.

What CFD solver and postprocessor do you use most often?

To be honest, I never run solvers or postprocessors. Since my focus is on the general architecture of the code, I leave the “science” side of the code to my much more capable colleagues.

Are you reading any interesting technical papers we should know about?

I’m not reading anything CFD- or coding-related at the moment. I’m currently reading “Quantum Enigma: Physics Encounters Consciousness” by Bruce Rosenblum and Fred Kuttner. It’s an interesting and approachable discussion of the relationship between consciousness and quantum physics. It is actually pretty unsettling on several levels. You should probably just forget that I said anything about it.

Do you plan on attending any conferences or workshops this year?

I currently have no plans for any technical conferences this year. I admit I am pretty much a hermit when it comes to work which is why telecommuting is such a good fit for me. I like to focus on the solution with as little distraction as possible. Invariably, when I go to conferences, I enjoy the first day and then spend the rest of the time wanting to get back to work on something I thought of on that first day. I do have plans to attend a few Atlanta-based conventions for board gaming, which ties into the next question.

What do you do when you’re not generating meshes?

When I’m not writing code to help other people generate meshes or basking in my lovely wife’s company, I’m probably gaming in one form or another. If it’s not tennis with the neighborhood team (every neighborhood in Atlanta has a tennis team) or video games, I’ll be gathering with friends once or twice a week to play board games. There is a huge selection of games beyond Monopoly and Clue that most people aren’t aware of.

My favorite game at the moment is Pandemic Legacy, a co-operative game in which the players act as a team of specialists trying to prevent a world-wide outbreak of four diseases. Think of it as team-based solitaire, but with an engrossing theme and much more interesting decisions to be made. Each play results in modifications to the game itself that are carried over into future plays. It is structured as a season of games, much like a television series. It even includes plot twists to the collaborative story we’re playing out. The result is unlike any gaming experience I’ve ever had.

What is some of the best CFD advice you’ve ever received?

“Stop. Just stop. Let somebody else do it.” – Unknown

If you had to pick a place to have dinner, where would you go?

My wife and I eat out so infrequently (my wife is a great cook) and there are so many restaurants in the Atlanta area that we seldom go to a restaurant multiple times. If it’s a special occasion, though, I would pick Pampas here in Atlanta or Eddie V’s in Fort Worth. Both have served some of the best steaks I’ve ever eaten. At the complete opposite end of the scale, my wife and I really enjoy getting wraps at Roly Poly.

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CFD in Aerospace America’s Year in Review

AA-YiR-2015-cover
It’s that time again. The December issue of AIAA’s Aerospace America includes their annual Year in Review. This issue, authored by all of their technical committees provides a great roundup of the highlights of the previous year across the entire spectrum of aerospace-related technologies and is the only issue I keep, going all the way back to 1980.

I like to note where CFD gets cited and for what reasons. Here’s what I found for the 2015 issue.

Applied Aerodynamics

As a precursor to a next generation of helicopter rotor hover experiments (for the collection of data for CFD validation), CFD was used to simulate a rotor installed in the NASA Ames Full-Scale Aerodynamics Complex.

The DoD’s HPCMP CREATE (Computational Research and Engineering Acquisition Tools and Environments) released several software updates during 2015: Kestrel 6.0 (CFD for aircraft), Helios 6.0 (CFD for rotorcraft), and DaVinci 3.0 (preliminary geometric design).

Atmospheric and Space Environments

Data collected and models developed from testing in the NASA Icing Research Tunnel will be used to validate CFD codes.

Fluid Dynamics

There is a rising interest in high order CFD methods and continued work on off-design and high-lift conditions.

A multi-year study was completed on how to teach CFD to undergraduates.

Meshing, Visualization, and Computational Environments

This technical committee took ownership of their technologies as cited in NASA CFD Vision 2030 Study (published in 2014). In particular, expert panel sessions were held to amplify on the nature of the impediments cited in the study and research in related areas was published and presented in technical sessions. One ultimate expression of assessing and monitoring the ongoing state of the art in these areas is a 1st AIAA Geometry and Mesh Generation Workshop, planned to be held in 2017.

Multidisciplinary Design Optimization

NASA released openMDAO version 1.0, a framework for performing design optimization. Other MDO environments are being developed at Wright State and Virginia Tech.

NASA Langley’s FUN3D CFD code is being modified to include adjoint-based aeroelastic sensitivities.

Plasmadynamics and Lasers

CFD investigated the unsteady nature of supersonic shock wave/boundary layer interaction and subsequent flow separation around laser director turrets.

Structural Dynamics

The Army’s Navier-Stokes solver is being coupled with new multi-body dynamic analysis models for first-principles kinematics and stresses for rotorcraft.

Thermophysics

New, atomic-scale models of chemical reactions and energy transfer collisions have been developed for use in CFD codes and the modeling of hypersonic shock layers.

 

Use the comments to let me know if I missed anything. Happy reading.

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This Week in CFD

A Brief I’ve Been at AIAA SciTech All Week Edition

  • ANSYS announced the six winners (three corporate, three academic) of their 2016 Hall of Fame Competition. One of the corporate winners was Combustion Research and Flow Technology for their LES simulation of flames (see image below).
  • Open source CFD package SU2 v4.1 was released and includes exact derivative computations, a discrete adjoint implementation, and more.
  • Tecplot announced at AIAA SciTech 2016 the release of Tecplot 360 EX 2016 Release 1 with improved polyhedral cell and animation support among other features.
  • ESI Group announced the availability of ESI Cloud, a cloud-based CAE solution built upon the technology acquired from Ciespace.
  • Abstract deadline for MeshTrends 11 and the World Congress on Computational Mechanics has been extended to 30 January.
  • Fluid dynamics blog FYFD turned 5, received an award from Tumblr, and posted their top 10 posts of 2015.
ANSYS-HoF-2016-Craft-Tech

CRAFT Tech was one of six winners in the 2016 ANSYS Hall of Fame Competition. Image from ANSYS. See link above.

The Art of Fluids is Everywhere

As mentioned here previously, I have a gentlemen’s agreement with a friend that whenever we’re at a conference together, we skip out for a few hours to check out the local art scene. That’s exactly what happened at AIAA SciTech in San Diego this past week.

Except sometimes you don’t even have to leave the hotel to find art. The image below is a piece hanging inside the Manchester Grand Hyatt. I’m certain most of you will see this as some sort of flowfield plot with velocity vectors.

SciTech-2016-flow-wall

We visited the Museum of Contemporary Art San Diego where we found three installations design to trigger three of your senses:

SciTech-2016-MCA-sight

Sight: An installation by Robert Irwin.

SciTech-2016-MCA-smell

Smell: The colored portions of this fabric installation are filled with various spices.

SciTech-2016-MCA-sound

Sound: This is a photo of a two-part video installation that was making a statement about sound and our inner voices.

We also visited the San Diego Museum of Art for their exhibit on the Art of Music but alas photography was not permitted.

This summer’s AIAA Aviation will be in Washington, DC. Anyone up for a visit to the National Gallery of Art?

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