This Week in CFD

News & Software

  • Altair is planning an IPO. [Exciting news for a cool company.]
  • From Flow Science comes stress-reducing CFD practices. “Patience is a virtue, especially in the CFD world.”
  • ENGYS released HELYX V3.0.0 with GUI, meshing, and adjoint solver improvements.
  • EDEM 2018 was released for discrete element modeling.
  • Here’s a blurb from the local paper about NASA Langley’s new computing center to be used for CFD and other computations. [Everyone’s seen Hidden Figures, right?]
msc-az-state

Arizona State’s winning entry in the 2017 Simulating Reality Contest. Image from MSC Software. See link below.

News from Pointwise

  • Pointwise Version 18.0 R4 was launched with the ability to dock a user’s Glyph scripts to a toolbar for 1-button access to automated macros and templates.
  • Pointwise will be in Tokyo next week participating in the VINAS Users Conference. This annual event from our partner in Japan will feature a presentation by Dr. Rick Matus (Pointwise executive vice president) on alignment of our product development strategy with the NASA CFD 2030 Vision and a workshop by Ms. Carolyn Woeber (manager of technical support) on the latest advancements in our hybrid meshing technology.
  • Join us in Daejeon, South Korea, on 16 October for Efficient Meshing With Pointwise, a workshop that will cover marine and aerospace applications of meshing as well geometry model preparation. This event is being facilitated by TAEYANG IT Co., Ltd., our partner in South Korea.
  • On 4-5 December, we invite you to join us in Stuttgart, Germany for the Pointwise Meshing Technology Conference. This conference, held in partnership with CFD Beratung, our distributor in the regions, will delve deeply into the tools and techniques for structured and hybrid mesh generation, high-order meshing, geometry cleanup, and applied meshing for specific types of applications.

Applications

Proctor-Gamble-Livermore-pfiber

Lawrence Livermore National Lab used their expertise with the Cubit meshing software to develop p-fiber, an automated preprocessing tool, for Proctor & Gamble’s use in simulating the performance of paper products. Image from phys.org. [This is very cool.]

  • CFD and meshing are mentioned in this brief introductory article about how parallel, multi-core computing is making FEA and CFD much faster. [I think it’s a bit Freudian that instead of “meshing” the article includes a tiny typo that reads “This messing [sic] and resulting solving of the Navier-Stokes equations…” Yes, meshing is a mess but you don’t have to keep rubbing it in.]
  • CFD was used in the design of a Carrousel Rave tugboat. [In which I learned that a carrousel tug has a central ring that rotates around the boat’s superstructure. Seems kinda cool, but what do I know from boats?]
  • CFD was used in the design of an underwater autonomous vehicle.
  • Tecplot shares their approach to comparing different datasets on different grids in Tecplot 360.

Events

Interesting Stuff

  • The OpenFOAM Foundation has announced the availability of fee-based maintenance plans to cover the €250,000 annual cost of bug fixing, testing, deploying, and improving the software. Four prioritized maintenance tiers are offered: Free; Bronze €1,000; Silver €5,000, and Gold, €20,000.
  • Here’s an interesting opinion from Simxon [pronunciation unknown]: it’s time for all of us to standardize on ParaView for CFD post-processing. Their position seems to be based on two arguments. First, ParaView is open-source and free. Second, “The big vendors have yet to offer technology which enables a solution from one system to be displayable together with a solution from another system.” Their first point is obviously true. I cannot judge the factual accuracy of their second point and invite those of you who are more knowledgeable to weigh-in. Even if the second point turns out to be true (and I’m not saying it isn’t), are those two points sufficient for their standardization argument?

Triangulating and Triangulating and Triangulating and…

What do you get when you apply Triangulate (an online tool to “make triangle designs from photos”) on an image of a mesh? And what if you do it again? And again? I expect you to explore this and related questions for the rest of the day. I know that’s what I’ll be doing.

triangulate-a-photo

Screen shot of Triangulate in action. See link above.

Here’s my original image:

x38-t-hex-2-thickerBL

Here’s the first pass through Triangulate:

x38-triangulate-1

Here’s the second pass through Triangulate:

x38-triangulate-2

 

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I’m Brian Zdeb and This Is How I Mesh

Brian Zdeb, Technical Support Intern.

I’ve lived in a few different places so far in my life, but Illinois and California most define where I’m from.

I was born, raised, and will forever be a Chicagoan. I grew up in the Northwest Side (specifically in the Belmont Cragin neighborhood) playing baseball, basketball, pick-up football, riding bikes around the streets, and sitting on my friends’ porches. As I got older, my closest friends and I explored what the city had to offer inside and out. Downtown, Lake Michigan, festivals (Lollapalooza, The Taste), parades (St. Patty’s Day mostly), Cubs games/Wrigleyville, Lincoln Park, Edison Park, North Park, Lake-Shore Drive, friends’ new apartments, etc. We were always meeting new people and going out.

When I wasn’t at school or with friends, I was working with my hands in programs my father enrolled me in such as Boy Scouts and woodshop. He also had me help with house projects or car fixes (he was a mechanic). These experiences I appreciated the most, as they are what set me on the path toward wanting a Mechanical Engineering Degree.

Currently, I am pursuing this degree at Caltech and will be a senior in the coming fall. Caltech is an awesome fit for me since everything, even our downtime conversations, focus on science and engineering. The myriad of exceptional and intelligent people there make this environment possible, they are always willing to share their ideas or help you get a concept down-pat. Of course, the classes aren’t a breeze. I’ve never worked harder, slept less, and stressed more. Looking back however, I also never learned faster and retained as much information in such short time. The most important thing I’ve taken away from Caltech, though, is the will and capability to learn things on my own.

I was first introduced to CFD through my ME 50 class at school, where we had to mesh and run simulations on an airfoil, beam, plate, and an engine part. Now that I’m interning here at Pointwise, I’m excited to learn all about the quality meshing side of CFD!

  • Location:Fort Worth, TX
  • Current Position: Technical Support Intern
  • Current Computer: HP Pavilion, Intel i7 @ 2.5GHz, 8GB RAM
  • One word that best describes how you work: Piece-wise (setting incremental goals)

What software do you use every day?

  • I mainly use Pointwise when I’m at work to mesh whatever I need, or to practice meshing techniques and scripting.
  • I use Notepad currently for anything script related and for recording notes.
  • Outlook is my main email client.
  • I use Spark and Microsoft Teams to stay connected and talk to anyone I need at Pointwise.

What does your workspace look like?

Simple, most of what I need is on the computer, in my pockets, or in my backpack.

What are you currently working on?

I recently just finished meshing the horizontal axis CX-100 wind turbine blade. Pointwise’s 2D T-Rex surface meshing technique was used to march anisotropic triangles from the leading and trailing edges of the blade until they reached isotropy. This technique helps provide accurate curvature resolution while keeping the cell count low compared when with pure isotropic based curvature refinement. A nearfield block was placed around the blade to produce an unstructured block and better resolution. This block was then rotated twice to generate the three blades. A nacelle with a tower was created, meshed, and attached to the blade hubs. Finally, a farfield, unstructured block was formed around the blade blocks, nacelle, and tower. This wind turbine mesh will be part of a mesh automation project that will be presented at the upcoming NAWEA 2017 Symposium.

In the next steps of the wind turbine project, I will be helping write and test scripts for mesh automation. My other current responsibilities include assisting with quality assurance and testing of new features that will be implemented in the upcoming Pointwise V18.1 R1 & R2. Also, I am updating HTML scripts which will be integrated into the Pointwise website.

What would you say is your meshing specialty?

I think I need more experience to specifically say. Because I used 2D T-Rex to resolve the geometry of the CX-100 blade and 3D T-Rex to initialize the nearfield volume, I would say that I am probably now more effective at generating a quality, hybrid mesh.

Any tips for our users?

  • If you’re attempting to use Assemble Domain multiple times with nothing happening, it’s probably because structured was chosen instead of unstructured.
  • Trying to perform a simple action without success might mean a feature tab is still open.
  • I would definitely encourage using the Layer Manager and being conscious of what you’re putting in each layer. Even with small projects it can make work a lot easier as I’ve already seen.
  • The built-in tutorials provide a good amount of practice and are definitely worth working through. Additionally, Pointwise’s YouTube channel includes many videos demonstrating feature use and meshing techniques.
  • If worse comes to worst, the Support team will always have your back at 1-800-4PTWISE or support@pointwise.com.

What project are you most proud of?

Since I haven’t been here long, the CX-100 is the mesh that I’m most proud of. It’s my first project here and the meshing process has taught me to not be scared to test the many features Pointwise has to offer.

A school project for my ME 72 class involved teams of five and the design and fabrication of three robots to participate in a relay-obstacle course. In this course, the first robot had to navigate a pylon field and pass a ball to the next robot. Robot 2 would then traverse a ramp, pick up a weight, and drop the ball down a ramp where robot 3 would pick it up, open a gate, and deposit the ball in a goal. This required the integration of many types of engineering, and I’m proud my team and I were able to build all three robots and compete.

Another thing I’m most proud of isn’t a project, but is academic related. I was the recipient of the Questbridge scholarship for Caltech. Questbridge is a program that matches underprivileged students with colleges across the US, and the financial assistance granted acts as a full ride scholarship. Basically, if I did not receive this I would not have been able to fund any college education, let alone somewhere like Caltech.

What CFD solver and postprocessor do you use most often?

I’ve only had experience using ANSYS Fluent for fluid simulations and ANSYS Static Structural for FEA simulations. This was in my ME 50 class, where after we compared the simulated data to actual experiments using water tunnels, UTMs (universal testing machines), strain gages, and PIV analysis. It was definitely a cool and worthwhile comparison to see the accuracy simulations can offer.

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

The last few papers I read were unrelated to CFD, but were interesting nonetheless. I took a class on nano-fabrication and my final presentation dealt with microfluidic device use in gene therapy. In my search, I found the paper: “A vector-free microfluidic platform for intracellular delivery.” Written by Armon Sharei et al., the device described was the most exceptional, yet simple, out of other papers I read.

A couple other papers relate to the summer research I did back at Caltech on creating a computational model to predict debris flow occurrences. I read “A model for fire-induced sediment yield by dry ravel in steep landscapes” by Michael Lamb et al., and “The physics of debris flows” by Richard Iverson.

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

Probably not. I went to the AGU (American Geophysical Union) conference last year to present research and that was a lot of fun. If there are any CFD conferences near me I would definitely try to attend them though!

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

  • I love listening to my music and finding new songs to add to my various playlists.
  • I like to work-out a decent amount during the summertime.
  • I binge watch shows like crazy. Recent series I’ve enjoyed include Westworld, Silicon Valley, and Rick and Morty.
  • I like to dabble with cooking (so I can get better at it).
  • Hanging with friends is always great too.

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

Something along the lines of “The best way to learn CFD software is to break it.”

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

If I were around Chicago, I’d go to Gene and Jude’s to grab the best hot dog ever. If an awesome Italian sausage/beef combo with an Italian ice is more your style, Johnnie’s Beef is the place. For deep dish pizza, you can’t go wrong with Giordano’s or Lou Malnati’s.

If I’m back at school in Pasadena, I would suggest Long Xing Ji Juicy Dumpling in San Gabriel, CA. The name doesn’t lie, they’re the juiciest dumplings I’ve ever had. For a great sausage, Wurstküche in LA is fantastic. Or for a late night snack, the breakfast burrito at Lucky Boy in Pasadena is the move.

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Pointwise Coming to South Korea and Germany

From the 2017 Q3 issue of The Connector:

Badge-180x180- LTM _BadgePointwise is bringing its Let’s Talk Meshing series of events to South Korea in October and Germany in December. We will be showing how Pointwise makes CFD analysis more efficient and trouble-free, and giving examples of Pointwise applied to real life engineering problems. There will also be plenty of time for questions on meshing and CFD. Both events are open to anyone and there is no charge, so we hope to see you there. (more)

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Pointwise Becomes a Blue Zones Project Approved Worksite

BZ-approved-worksite-sealWe are proud to announce that Pointwise has been recognized as a Blue Zones Project ApprovedTM Worksite!

Blue Zones Project® is a community-led well-being initiative designed to make healthy choices easier in Fort Worth through permanent changes to environment, policy, and social networks. When our entire community participates – from worksites and schools to restaurants and grocery stores – the small changes add up to huge benefits for all of us: lowered healthcare costs, improved productivity, and ultimately, a higher quality of life.

BZ1

Pointwise received Blue Zones Worksite Approval at our September staff meeting. From left to right: Rick Matus (executive vice president), John Chawner (president), Yolanda Harper (Blue Zones Project), Carrie Jefferies, Carolyn Woeber, and Jim Colby (our Wellness Plan Committee).

Pointwise is playing an important role in this well-being initiative by achieving Blue Zones Project Approved status. Some of the initiatives we have implemented to earn this designation include creating a Wellness Team, attending a plant-based cooking class, initiating standing meetings, and sponsoring a team of employees and family members in a community walk/run annually.

Our staff participation in these efforts, such as signing the Blue Zones Personal Pledge, helped us reach this designation. By implementing these healthy evidence-based options, Pointwise is helping our employees and everyone who lives, works and play in Fort Worth live longer, better lives.

City Council Picture

Pointwise and other organizations were recognized at the Fort Worth City Council Meeting on 26 September 2017 for achieving Blue Zones Approval.

Taking the Blue Zones Personal Pledge is just the first step to living a longer, better life. If you took the pledge, you should already be receiving monthly updates about Blue Zones Project activities happening across our community, timely tips for making healthy choices easier, and links to recipes, information, and resources that will help you improve your well-being. You’ll also have the opportunity to participate in variety of activities that will help you move naturally, eat healthier, find your purpose, and stay connected.

Want to learn more about Blue Zones Project?

  • Read about the original Blue Zones areas in Dan Buettner’s best-selling book, The Blue Zones: Lessons for Living Longer from the People Who Have Lived Longest.
  • Follow Blue Zones Project on Facebook, Twitter, and Instagram.
  • Discover volunteer opportunities where your passions align.

If you haven’t already taken the Personal Pledge, we encourage you to visit fortworth.bluezonesproject.com/pledge, take the pledge, and join the movement to improving your own well-being.

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This Week in CFD

Lattice Boltzmann News

  • Dassault Systemes plans to acquire Exa for about US$400 million. And in this article by Monica Schnitger we read the wonderful analogy: “think of Lattice-Boltzmann as ping pong balls and Navier-Stokes as streamers.”
  • Numeca and FlowKit are partnering on Lattice-Boltzmann technology by creating an “exclusive integration” of FlowKit’s open-source PALABOS LBM solver into Numeca’s OMNIS/LB. (OMNIS is Numeca’s integrated simulation environment.)

Futures of Computing and CFD

intelligent-light-f1-overtake

CFD visualization using FieldView of an F-1 overtake simulation. Image from Altair. See link below.

  • According to this article from HPCwire, the U.S.’ first exascale system – called Aurora – will go online in 2021 and be developed under contract by an Intel/Cray team.
  • The Future CFD Technologies Workshop will be held on 6-7 January the weekend prior to and co-located with AIAA SciTech. “The focus of this workshop will be to explore past, present and future contributions of applied mathematics and computer science for simulation-based aerospace applications, and to motivate the case for increased interdisciplinary contributions between these fields.”

Software

  • Pointwise Version 18.0 R4 was released for mesh generation.
  • [From the things that make me go “hmmm” category,] NASA’s CFL3D structured grid CFD code is available on GitHub under the Apache License, Version 2.0.
  • DEVELOP3D reviews ANSYS Discovery Live 1.0 and says it’s “one of the biggest breakthroughs in design and engineering technology in the last ten years.” This article is worth reading and pondering the potential of this technology.
  • In other news from Dassault Systemes, SOLIDWORKS 2018 was launched.
  • OpenVSP 3.13.3 was released for parametric design of aircraft.
  • FieldView Express is now available through the Altair Partner Alliance for CFD postprocessing and visualization.
  • Here’s Visualizing Data’s best of the visualization web for July 2017.
ANSYS-HOF-2017-cardiff-bg

ANSYS Hall of Fame 2017 “Best in Show: Academic” entry from Cadiff University showing LES simulation of a tidal stream turbine. Image from ANSYS. See link above.

Events

  • You have until 03 November 2017 to submit your “eye-popping simulation images and videos” for the 2018 ANSYS Hall of Fame Competition.
  • The 9th International Conference on Curves and Surfaces will be held 28 Jun – 04 Jul 2018 in Arachon, France.
  • CFD will be on display in Mitsubishi Heavy Industries’ MRJ Museum, dedicated to the Mitsubishi Regional Jet. The museum opens 30 November and includes a display on “cutting-edge technologies” used in the jet’s design including CFD.

Pointwise’s Events

Long Reads

  • Worthwhile read: 3 Things Executives Value Most in a Mechanical Engineer. This free ebook from Onshape (registration required) includes advice about considering the user experience of all aspects of a customer’s interaction with your product. [P.S. This applies to more than just mechanical engineers IMO.]
  • More reading: ERCOFTAC has an online knowledge base billed as ” the world’s foremost repository of structured knowledge and advice designed to underpin quality and trust in the industrial application of CFD.”
  • Our friends at GridPro delve into the question Is Grid Generation an Art or a Science? Their article extends the discussion that I attribute to Tim Baker’s seminal 2005 paper Mesh Generation: Art or Science? [Without giving too much away, IMO meshing is a science. I’ve yet to find a profession that doesn’t claim to involve a bit of artistry which is used in the sense of expertise bordering on the sublime.]
gridpro-airfoil-icing

Multi-block, structured grid topology for an airfoil with ice buildup generated using GridPro. Image from GridPro. See link above.

This is How We Work

Painter Kes ZapkusWays of Work (see below) made me think, “Yes, these are the ways we work” in the sense that curved shapes and hard-edged meshing components and colors are brought together into CFD meshes. There is definitely a “work in progress” vibe going on here.

Kes-Zapkus_WaysofWork_1993

Kes Zapkus, Ways of Work, 1993. source

While working on meshes, I’d like to be seated in the Bertoia structured grid chair shown below.

bertoia-chair

Bertoia Small Diamond Chair. Image from Hive Modern. source

Bonus: Sushi in a wind tunnel.

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Pointwise V18.0 R4 Includes Scripting Enhancements and More

Pointwise Version 18.0 R4 is now available for download and production use. Although primarily a maintenance release, V18.0 R4 includes several new features beginning with the docking of user scripts to the toolbar.

With the wide adoption of Glyph scripting for automating meshing through the development of templates and macros, a more convenient method than the menu was needed for executing user scripts. With this new release, customer scripts can be docked to the toolbar for 1-click access.

scripts-on-toolbar

Users can now dock their Glyph scripts to Pointwise’s toolbars thereby customizing the software for their personal workflow. The screenshot above shows the dialog box for adding a script and assigning it an icon while the panel on the left shows the contents of the current script toolbar.

Also within the scripting feature suite, Glyph server functionality has been extended to remote hosts. (The Glyph server previously only listened for clients from the local host.)

File I/O Enhancements

Mesh data can now be imported from and exported to CGNS files formatted using HDF5. (Only ADF format had been supported until now.)

You can define the folder/directory where the file browser opens for various commands through an environment variable setting as listed below.

  • PWI_GLYPH_START_DIR = Script, Execute
  • PWI_EXPORT_CAE_DIR = File, Export, CAE
  • PWI_EXPORT_GRID_DIR = File, Export, Grid
  • PWI_FILE_OPEN_DIR = File, Open

Import of geometry models in NX11 format is now supported.

During File, Open when the actual distribution of grid points on connectors is found to be inconsistent with the distribution function assigned to the connector you now are presented with a much more concise message and given an option on how to proceed:

  • preserve the grid point locations and change the distribution functions to type general, or
  • preserve the distribution functions and recompute the grid point locations.

Support for Suggar++ has been raised to include v2.9.

Meshing Enhancements

The Examine command now computes a cell’s non-orthogonality metric which is defined as the angle between a face’s normal vector and the vector connecting the centroids of the cells that share the face.

Refinement, decimation, and smoothing of an unstructured surface mesh now only effect the isotropic cells and will not change any anisotropic cells.

User Interface Enhancements

Ctrl+Shift+X was added as a shortcut to re-enter the Examine command with all your previous settings.

All the Show commands (e.g. Show Domains, Show Axes) now have a toolbar implementation.

The Set Boundary Conditions and Set Volume Conditions command now tally the number of mesh cells in each BC/VC region.

Note: A Change to OS X Support is Coming

Beginning with Version 18.1 (release date TBD), Pointwise will no longer support versions of OS X older than 10.10.

Upgrade to V18.0 R4 Today

You can download Pointwise Version 18.0 R4 from at www.pointwise.com/downloads. Current customers can begin using it immediately. If you would like to try Pointwise, request a free trial license today.

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Presentation Topics for Stuttgart Meshing Technology Conference

We look forward to meeting you in Stuttgart on 4-5 December 2017 for a conference on mesh generation for CFD with a detailed look at the techniques used in Pointwise. Six Pointwise staff will be present along with an engineer from CFD Beratung.

Technical topics ranging from structured grid generation, to geometry model preparation, and advanced unstructured mesh techniques will be covered. In addition to mesh-centric topics, the presentations also cover the effect of the mesh on CFD solutions.

A link to the conference registration page is included at the bottom of this post.

Special Presentation

As a special addition to the technical program, we are honored to feature a presentation on High Quality, Scalable Meshes – A Prerequisite for Quantification of Solution Errors and Uncertainties to be delivered by Georg Scheuerer from ISimQ.

Technical Presentations

High Order Meshing - Picture1Higher Order CFD Meshing Methods – In recent years, high order CFD methods have been an area of active research due to the potential of improved simulation accuracy at lower computational cost. A number of AIAA workshops have demonstrated that high order meshing for CFD remains a significant obstacle to widespread adoption of high order technology. Pointwise is taking an active role in the field of high order meshing, with a focus on practical meshing of real-world configurations. We will present the current status of Pointwise high order meshing, including examples on complex configurations.

Matering Geometry CleanupMastering Geometry Cleanup in Pointwise – Using imported CAD geometry as the basis for CFD meshing can be fraught with problems. This presentation demonstrates the suite of tools available in Pointwise to speed the CAD cleanup process. Complex, practical CAD examples will demonstrate how to visualize model tolerances, identify and heal gaps in geometry, apply strategies to identify and recreate missing surfaces, and determine the suitability of your CAD models prior to meshing.

GMGW-CDW-HL-CRM-SymPlaneCutLessons Learned from the 1st AIAA Geometry and Mesh Generation Workshop – This presentation features an overview of the results and lessons learned from the 1st AIAA Geometry and Mesh Generation Workshop (GMGW). The 1st GMGW, held in conjunction with the 3rd AIAA CFD High Lift Prediction Workshop, provided a forum for participants across industry, academia, and government to meet and discuss their trade. Their collaboration allowed them to share the results and best practices related to CFD mesh generation techniques and processes. A group of 18 participants created mesh families for the NASA High Lift Common Research Model (HL-CRM), using both traditional and leading-edge techniques. The processes, resources, and challenges encountered were documented by participants, and addressed in a compilation of the results by workshop organizers.

Marine-PPTCImageMesh Topology Comparisons for Marine Propeller Simulations – This presentation will focus on simulation efficiency and its dependence on the mesh generation process. The aim is to better understand the relative merits and drawbacks of various meshing strategies, using a marine propeller as a model. The considered meshing strategies include hybrid and structured overset, introducing an approach for computing simulation efficiency, and exploring the process for generating each mesh. Best practices are highlighted with an emphasis on mesh quality, and the ease of surface and volumetric refinement. Each mesh is evaluated against the amount of time required to create the mesh, its cell count and quality, the accuracy of the results, and the time needed to run the simulation to a prescribed convergence threshold.

Techniques for Constructing High-Quality Structured Hexahedral Meshes – A good quality mesh leads in general to faster convergence and more accurate results. Pointwise offers various tools to create different types of meshes (structured, unstructured and hybrid). This presentation will focus on techniques for creating structured quadrilateral meshes in 2-D and hexahedral meshes in 3-D. The advantages of hexahedral elements over tetrahedral elements from a numerical point of view will be illustrated, along with ways to efficiently create multi-block structured meshes using either block assembly or extrusion. We will also cover block topologies that can be used to generate high-quality structured meshes for different geometries and how to use the elliptic solver to help improve mesh quality.

PAWS-F4-structured-cuts3IFCPT S-Duct Grid-Adapted FUN3D Computations for the 3rd Propulsion Aerodynamics Workshop – FUN3D, the unstructured Reynolds-averaged Navier-Stokes code, has made strong contributions to the 3rd AIAA Propulsion Aerodynamics Workshop. Focusing on three diffusing IFCPT S-Duct cases, we examine the effect of output-based, off-body grid adaptation as a key enabler for improved CFD predictions. Using workshop-supplied grids, comparisons can be drawn between the baseline results for the S-Duct, the S-Duct with Aerodynamic Interface Plane (AIP) rake assembly, and the S-Duct with flow control devices, and results of the test data computed in FUN3D.

Unstructired Mesh - DrivAArTechniques for Constructing High-Quality Unstructured Hexahedral Meshes – Pointwise Version 18 includes new features enabling unstructured quad-dominant surface meshing and hex-dominant viscous layer meshing. This presentation describes techniques for efficient utilization of the new meshing features. We will discuss the methodology behind the new tools, and demonstrate unstructured hexahedral meshing on complex configurations.

Register Today

There’s no fee for the conference but registration is required. Details about the conference’s location and agenda are available on the registration page. Don’t delay – register today.

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