Intelligent Light and FieldView

Parallel CFD Conference - Extract-based Workflows Enable & Accelerate Large Scale Production CFD

28th International Conference on Parallel Computational Fluid Dynamics, May 9-13, 2016, Kobe, Japan  

Extract-based Workflows to Enable and Accelerate Large Scale Production CFD 
Steve M. Legensky, Founder and General Manager, Intelligent Light

As scalable computing use accelerates, the rate at which data is being generated by CFD simulations exceeds the speed at which it can be written to disk, transferred, post-processed and analyzed. It has become difficult for engineers and researchers to gain understanding via visualization, exploration and collaboration. As a result, design alternatives are not tried, research questions are not asked and simulation complexity is reduced.  The true value of HPC enabled CFD is not realized.

Extracts created in situ present a solution to this otherwise intractable problem by vastly reducing the amount of data that is written, transferred and used for visualization and analysis. In sity methods have been maturing over the years with two open source tools, VisIt/libsim and ParaView/Catalyst becoming ad hoc standards for production-level in situ CFD. However, using these methods at peta-flop and exa-flop scales present the same challenges that most codes face in moving to these extreme scales.

Intelligent Light has been involved in developing and extending VisIt/libsim for in situ and extract-based post-processing and creating a more standardized, high performance infrastructure for in situ integration into solver codes. In this presentation Steve Legensky will provide an overview of the current scaling research utilizing the Georgia Tech AVF-LESLIE reactive flow multiphysics code on large scale systems at DOE's NERSC and the TITAN system at the Oak Ridge Leadership Class Compute facility. On TITAN, over 130,000 cores were used for the solver and integrated in situ processing. 

In addition, benchmark results for production engineering examples in aerospace will be presented.

Speaker Biography
Steve M. Legensky is the founder and general manager of Intelligent Light, a company that has delivered products and services based on visualization technology since 1984. He attended Stevens Institute of Technology in Hoboken, New Jersey and received a BE degree in electrical engineering in 1977 and a MS degree in mathematics in 1979. Steve's passion is applying computer graphics and data management to difficult engineering problems. Steve is an Associate Fellow of the American Institute of Aeronautics and Astronautics (AIAA) and has published and presented for AIAA, IEEE, ACM/SIGGRAPH and IDC.
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Now Available! Formula 1 & FieldView – Winning CFD Workflows

Hear it for yourself!  

On Demand Webinar now available!

Torbjörn Larsson, Creo Dynamics AB, has an impressive background in aerodynamics and CFD methodology. His track record in Formula 1, most recently at Ferrari, establishes him as a preeminent CFD workflow engineer. He has been instrumental in building up the CFD department for the Sauber F1 team and has since led the CFD teams at Sauber, BMW and Ferrari to much success in Formula 1.


Mr.Larsson presented Formula 1 workflows designed with FieldView to a group of over 100 CFD engineers at the 2015 VINAS User's Group Meeting in Shinegawa, Japan. This international audience included CFD engineers from Motorsport, Automotive Manufacturing, Heavy Industry, Government Research Agencies and Academia.

"Presenting at the VINAS UGM in Japan was an amazing experience. Japan is synonymous with both excellence in engineering and a passion for motorsports. More knowledgeable listeners are hard to find," said Mr. Larsson. "Being able to showcase to this audience how the ultra-fast CFD workflow seen in Formula One has gained further efficiency from the integration of recent FieldView XDB technology was truly inspiring and rewarding."

F1 teams are among our most demanding customers due to the need to simultaneously achieve breakthrough results in a very short time while building a robust, reliable production workflow.

Formula 1 teams demand:

  • The ability to manage huge volumes of results data in very short timeframes
  • Ongoing acceleration of their entire CFD workflow
  • Delivery of vital engineering information to the right people in the team, on time, every day.

Mr. Larsson's presentation focused on designing workflows to meet the demands of Formula 1 CFD teams where huge volumes of data and very short timeframes require innovative and robust automation. His solution includes the use FieldView XDB extracts as a way to reduce data size and achieve required throughput.​

Mr. Larsson is a fluid dynamics and CFD methodology engineering consultant at Creo Dynamics AB, helping organizations improve the efficiency of their CFD operations.

Hear it for yourself with our On Demand Webinar!

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Rotor Heads Unite! - AIAA Hover Prediction Workshop

Isometric View Comparison of Iso-surfaces of Q-Criterion=0.001 colored by w-velocity

UPDATE Jan. 2017: The Hover Prediction Workshop continues and new work was presented at AIAA SciTech in January, 2017.  

This month at SciTech, I participated in the AIAA special session on Hover Prediction, also known as the Hover Prediction Workshop. This particular workshop has special meaning to me because I started my career in CFD when I was a Research Scientist at the US Army Aeroflightdynamics Directorate at NASA Ames Research Center. At that time, I was part of a group of engineers tasked with producing the first full helicopter CFD simulation. That goal was achieved, but the community is still working to define the best practices for predicting helicopter hover. It has been well over 10 years since I've presented to this community, so it was like a homecoming having this opportunity to present to them again.

The workshop brought together seven participants submitting data on the same sample cases but using different meshes, different solver codes and different methods. The goal was to be able to compare all the data to maximize the knowledge extracted.​

Intelligent Light supported this effort by contributing time and expertise to develop a standardized, automated, post-processing workflow that facilitated dataset comparison, report generation and knowledge extraction for a diverse set of CFD results. 

Our solution allowed the users to upload data that was then run through the automated routines to normalize the data, produce XDB extracts and publish comparison images. Participants are able to explore the XDB data extracts with their own licensed version of FieldView or by downloading the free viewer: XDBview. Generating images and compact XDB files allowed all users to explore their data interactively on their local systems.

Our team included Intelligent Light Application Engineers Atsushi Toyoda and Michael Burklund, and Intelligent Light Applied Research Group member Christopher P. Stone. We also brought in R-Systems, our on-demand HPC computing partner. R Systems provided an anonymous ftp server where the participants could upload their data and worked with our team to implement the workflow using PBS and parallel servers. It was easy to set up and run the post-processing tasks on the remote HPC systems. I'd like to thank R Systems for their help and support on this project.

In addition to the workflow engineering, Intelligent Light ran two unsteady OVERFLOW simulations for the workshop. These were executed by Intelligent Light on a remote Cray supercomputer that provided the HPC capability to run multiple full transient solutions for the project. We'd like to thank our partners at Cray for their support of this Workshop.

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Formula 1 & FieldView – Winning CFD Workflows

Hear it for yourself!  

LIVE Webinar Tuesday, December 1, 2015 - Register now!

Torbjörn Larsson, Creo Dynamics AB, has an impressive background in aerodynamics and CFD methodology. His track record in Formula 1, most recently at Ferrari, establishes him as a preeminent CFD workflow engineer. He has been instrumental in building up the CFD department for the Sauber F1 team and has since led the CFD teams at Sauber, BMW and Ferrari to much success in Formula 1.


Mr.Larsson presented Formula 1 workflows designed with FieldView to a group of over 100 CFD engineers at the 2015 VINAS User's Group Meeting in Shinegawa, Japan. This international audience included CFD engineers from Motorsport, Automotive Manufacturing, Heavy Industry, Government Research Agencies and Academia.

"Presenting at the VINAS UGM in Japan was an amazing experience. Japan is synonymous with both excellence in engineering and a passion for motorsports. More knowledgeable listeners are hard to find," said Mr. Larsson. "Being able to showcase to this audience how the ultra-fast CFD workflow seen in Formula One has gained further efficiency from the integration of recent FieldView XDB technology was truly inspiring and rewarding."

F1 teams are among our most demanding customers due to the need to simultaneously achieve breakthrough results in a very short time while building a robust, reliable production workflow.

Formula 1 teams demand:

  • The ability to manage huge volumes of results data in very short timeframes
  • Ongoing acceleration of their entire CFD workflow
  • Delivery of vital engineering information to the right people in the team, on time, every day.

Mr. Larsson's presentation focused on designing workflows to meet the demands of Formula 1 CFD teams where huge volumes of data and very short timeframes require innovative and robust automation. His solution includes the use FieldView XDB extracts as a way to reduce data size and achieve required throughput.​

Mr. Larsson is a fluid dynamics and CFD methodology engineering consultant at Creo Dynamics AB, helping organizations improve the efficiency of their CFD operations.


Hear it for yourself!

LIVE Webinar Tuesday, December 1, 2015 - Register now!

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XDBview used as STEM teaching aid for middle schoolers

Considered by many to be the critical element in preparing students to succeed in the modern economy, STEM education is important to you and your children.



 Fueling knowledge development and creativity - Using FieldView XDBview, Darrin Stephens of Applied CCM, introduces students to basic aerodynamics concepts.

When his daughter and her classmates wanted to understand aerodynamics, Dr. Darrin Stephens of Applied CCM knew he could bring examples from his work to help.  Dr. Stephens is a FieldView user and is accustomed to showing clients and colleagues characteristics of fluid flows he's been studying using computational fluid dynamics (CFD).  Using CFD simulation and FieldView gave him a powerful way to help students see what they can't directly observe, a problem engineers face all the time.



 
The students are participating in a human powered vehicle competition.  They recognized that as their vehicle moved faster, the affects of airflow could limit the speed they could attain and maintain.  They asked Dr. Stephens to help them understand some basic aerodynamic concepts.  He responded by bringing real-life CFD solutions to the classroom and sharing those results with XDBview.

"As part of my lesson I used FieldView XDBview (latest version is fantastic by the way!) with the result from my previous V8 super car simulations to help explain & demonstrate drag, induced drag, streamlines etc." - Darrin Stephens, Applied CCM


 
Air is a unseen force acting on objects in motion. CFD allows students and engineers alike to see airflows and effects they cannot directly observe.

XDBview allowed Dr. Stephens to show moving airflow and explain the impact on a racecar, effects that are similar to what the students would need to consider.  Having used FieldView to post-process his unsteady OpenFOAM simulation solutions,  he created lightweight XDB files and used XDBview to interactively explore the flow solution and explain aerodynamics to the students.  Because the XDBview session was fully interactive, they were free to ask questions and see new representations of the flow field.

Fluid flows and aerodynamics surround us but students need some training to look for them and to consider them when pursuing projects like their human powered vehicles.  Demonstrations such as Dr. Stephens' shared help students see what they normally can't, understand new phenomena and send them out of class better prepared to become skilled observers of fluid mechanics when they can see its effects during their daily lives.

After the demonstration, the students asked for videos they could continue to watch and share with their parents.  The videos on this page show the CFD simulation results from a flow study of a Holden VE Commodore V8 supercar.

Darrin Stephens is a founder and managing director of Applied CCM, an engineering software development company with offices in Australia and Canada.

Related post: Applied CCM uses OpenFOAM and FieldView for Unsteady Turbulent Flows

 

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