TY - JOUR
T1 - Large-eddy simulations of turbulence on the CM-2
AU - Robichaux, Joseph
AU - Tafti, D. K.
AU - Vanka, S. P.
N1 - Funding Information:
Joseph Robichaux was supported by a graduate fellowship from the Office of Naval Research (ONR). The CM-2 time was provided by the NSF National Center for Supercomputing Applications (NCSA) at the University of Illinois. We also thank Mr. Steve Saroff of Thinking Machine Corp. for his help in using the CMSSL routines and the CM-2 in general.
PY - 1992
Y1 - 1992
N2 - This paper reports the development and performance of a computer program for large-eddy simulations (LES) of turbulence on a massively parallel computer, the Connection Machine-2 (CM-2). The computer program solves the time-dependent Navier-Stokes equations for large scales of turbulence using a second-order time and space accurate, semi-implicit, finite-difference scheme. The effects of small scales of turbulence are represented by a subgrid closure model. The computer program is written in CM Fortran but uses some of the Connection Machine Scientific Subroutine Library (CMSSL) routines for line inversions and discrete Fourier transforms. Calculations are performed for fully developed channel flow and results are compared with previously published numerical and experimental data. In comparison with a similar calculation on a single-processor Cray-2, a speedup factor of 2.1 has been achieved with a 32 K CM-2. It is observed that the CM-2 provides a promising environment for turbulence simulations. Details of the physical problem, the numerical algorithm, and the performance of the machine are reported.
AB - This paper reports the development and performance of a computer program for large-eddy simulations (LES) of turbulence on a massively parallel computer, the Connection Machine-2 (CM-2). The computer program solves the time-dependent Navier-Stokes equations for large scales of turbulence using a second-order time and space accurate, semi-implicit, finite-difference scheme. The effects of small scales of turbulence are represented by a subgrid closure model. The computer program is written in CM Fortran but uses some of the Connection Machine Scientific Subroutine Library (CMSSL) routines for line inversions and discrete Fourier transforms. Calculations are performed for fully developed channel flow and results are compared with previously published numerical and experimental data. In comparison with a similar calculation on a single-processor Cray-2, a speedup factor of 2.1 has been achieved with a 32 K CM-2. It is observed that the CM-2 provides a promising environment for turbulence simulations. Details of the physical problem, the numerical algorithm, and the performance of the machine are reported.
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U2 - 10.1080/10407799208944910
DO - 10.1080/10407799208944910
M3 - Article
AN - SCOPUS:0026858870
SN - 1040-7790
VL - 21
SP - 367
EP - 388
JO - Numerical Heat Transfer, Part B: Fundamentals
JF - Numerical Heat Transfer, Part B: Fundamentals
IS - 3
ER -