Steve M. Legensky
and Brad J. Whitlock
NASA Ames Research Center
August 17, 2017
Video Archive Available Here
Over the past thirty years, computational simulation of fluid dynamics has made huge strides in meshing of complex geometries, computational efficiency and most importantly, greater fidelity in physics models. Current trends include greater adoption of unsteady methods via LES, higher order methods and alternatives to classical CFD such as Lattice Boltzmann methods. However, the majority of engineering applications remain constrained by computational and storage resources as well as schedule and time pressure. The CFD 2030 Vision highlights the need for improved Knowledge Extraction and Data Management tools that address the scale and fidelity of exascale class problems. Perhaps most interesting, these tools will enable non-deterministic engineering (NDE) in which variations in boundary conditions, discretization and models can more realistically predict the behavior of complex aerodynamic, propulsion or power generation systems.
This talk highlights recent activities at Intelligent Light that include how to manage the massive data flows resulting from ensembles of unsteady CFD calculations, new tools that support engineering use of uncertainty quantification techniques and the latest HPC-FieldView software that combines the familiar interface of FieldView with the scalability of VisIt. Through the lens of post-processing and data analysis, we have gained a unique perspective on research and engineering use of CFD from the late 1980's through today. The talk touches on this history while giving examples of state-of-the-art petascale CFD and surveys the challenges that exascale computing is intended to address.
Steve M. Legensky - Founder and General Manager of Intelligent Light
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.
Brad J. Whitlock – Visualization and Post-Processing Engineer
Brad Whitlock is a visualization and post-processing engineer in Intelligent Light's Applied Research Group and a founding developer of VisIt. VisIt is a powerful, massively parallel visualization tool designed for high performance computing environments. Brad joined Intelligent Light in 2013 to develop a commercially-hardened version of VisIt that serves as an enabling technology for Intelligent Light's HPC FieldView product. Brad's interests lie in scientific visualization, in situ processing, and parallel programming.
For previous topics in AMS seminar series and to view recorded sessions: http://www.nas.nasa.gov/publications/ams