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HPC Requirements of High-Fidelity Flow Simulations for Aerodynamic Applications

Probst, Axel and Knopp, Tobias and Grabe, Cornelia and Jägersküpper, Jens (2020) HPC Requirements of High-Fidelity Flow Simulations for Aerodynamic Applications. HPCN Workhop, Euro-Par Conference 2019, 26. Aug. 2019, Göttingen.

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Official URL: https://2019.euro-par.org/


This paper relates the computational demand of turbulence- resolving flow simulations for aircraft aerodynamics to the parallel scal- ability of the DLR flow solvers TAU and THETA, as well as the new CODA solver optimized for many-core HPC systems. Based on exist- ing lower-fidelity simulations, the computational requirements for wall- resolved LES are first estimated for single aircraft components at wind- tunnel scale. It is shown that such simulations at reduced Reynolds num- bers would be realizable within days to weeks with the current methods, if the largest available HPC clusters with more than 100,000 cores were used. However, an extrapolation to the HPC requirements of LES for a full 3D wing of an aircraft at flight Reynolds numbers highlights the urgent need for larger HPC resources and adapted parallel code designs, as well as more efficient numerical algorithms and physical models.

Item URL in elib:https://elib.dlr.de/128217/
Document Type:Conference or Workshop Item (Speech)
Title:HPC Requirements of High-Fidelity Flow Simulations for Aerodynamic Applications
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Probst, AxelAxel.Probst (at) dlr.deUNSPECIFIED
Knopp, TobiasTobias.Knopp (at) dlr.deUNSPECIFIED
Grabe, Corneliacornelia.grabe (at) dlr.deUNSPECIFIED
Jägersküpper, JensJens.Jaegerskuepper (at) dlr.deUNSPECIFIED
Date:29 May 2020
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:high performance computing, large eddy simulation, TAU, THETA, CODA
Event Title:HPCN Workhop, Euro-Par Conference 2019
Event Location:Göttingen
Event Type:international Conference
Event Dates:26. Aug. 2019
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation (old), L - VicToria (old)
Location: Göttingen
Institutes and Institutions:Institute for Aerodynamics and Flow Technology > CASE, GO
Institute for Aerodynamics and Flow Technology > CASE, BS
Deposited By: Probst, Axel
Deposited On:25 Sep 2019 10:58
Last Modified:01 Oct 2020 20:32

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