Title: MPI scalability of a large memory LES code

Authors: Mesbah Uddin, Andew Pollard

Addresses: Department of Mechanical and Materials Engineering, Queen's University, Kingston, ON, Canada. ' Department of Mechanical and Materials Engineering, Queen's University, Kingston, ON, Canada

Abstract: Large Eddy Simulations (LES) of co-flowing round jets with 33.6 million grid points are carried out using 16 Sun 1 GHz UltraSPARC III Cu processors. An in-depth processor scalability analysis is carried out for an MPI based code for a finite-volume solution of time dependent Navier-Stokes equations. Particular attention is paid to the effect of initial conditions on the spatial development of the co-flowing jet at a Reynolds number of 7,300. The evolution of the turbulence structures is quantified using various discrimination techniques, which compared well with the flow visualisation experiments of Villermaux et al. (1998).

Keywords: turbulence; LES; large eddy simulations; Navier-Stokes; finite volume solution; MPI; round jets; high performance computing; co-flowing jets.

DOI: 10.1504/IJHPCN.2006.013484

International Journal of High Performance Computing and Networking, 2006 Vol.4 No.5/6, pp.295 - 302

Available online: 01 May 2007 *

Full-text access for editors Access for subscribers Purchase this article Comment on this article