Title :
Petascale direct numerical simulation of turbulent channel flow on up to 786K cores
Author :
Myoungkyu Lee ; Malaya, Nicholas ; Moser, Robert D.
Author_Institution :
Dept. of Mech. Eng., Univ. of Texas at Austin, Austin, TX, USA
Abstract :
We present results of performance optimization for direct numerical simulation (DNS) of wall bounded turbulent flow (channel flow). DNS is a technique in which the fluid flow equations are solved without subgrid modeling. Of particular interest are high Reynolds number (Re) turbulent flows over walls, because of their importance in technological applications. Simulating high Re turbulence is a challenging computational problem, due to the high spatial and temporal resolution requirements.
Keywords :
boundary layer turbulence; channel flow; computational fluid dynamics; external flows; flow simulation; numerical analysis; DNS; channel flow; computational fluid dynamics; fluid flow equations; grid modeling; high Reynolds number; performance optimization; petascale direct numerical simulation; turbulent flow over walls; wall bounded turbulent flow; Abstracts; Benchmark testing; Equations; Mathematical model; Mechanical engineering; Numerical simulation; Vectors; Data transpose; MPI alltoall; Parallel FFT; Petascale; Turbulence;
Conference_Titel :
High Performance Computing, Networking, Storage and Analysis (SC), 2013 International Conference for
Conference_Location :
Denver, CO
Print_ISBN :
978-1-4503-2378-9
DOI :
10.1145/2503210.2503298
