DMCA
Parallel Simulation of Cavitated Flows in High Pressure Systems (2003)
BibTeX
@MISC{Adamidis03parallelsimulation,
author = {Panagiotis A. Adamidis and Frank Wrona and Uwe Iben and Rolf Rabenseifner and Claus-dieter Munz},
title = { Parallel Simulation of Cavitated Flows in High Pressure Systems},
year = {2003}
}
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Abstract
This paper deals with the parallel numerical simulation of cavitating flows. The governing equations are the compressible, time dependent Euler equations for a homogeneous two-phase mixture. The equations of state for the density and internal energy are more complicated than for the ideal gas. These equations are solved by an explicit finite volume approach. After each time step fluid properties, namely pressure and temperature, must be obtained iteratively for each cell. The iteration process takes much time, particularly if in the cell cavitation occurs. For this reason the algorithm has been parallelized by domain decomposition. In case where different sizes of cavitated regions occur on the different processes a huge load imbalance problem arises. In this paper a new dynamic load balancing algorithm is presented, which solves this problem efficiently.
Keyphrases
high pressure system parallel simulation cavitated flow parallel numerical simulation much time time dependent euler equation time step fluid property iteration process internal energy explicit finite volume approach ideal gas huge load imbalance problem arises homogeneous two-phase mixture cell cavitation different size domain decomposition cavitated region new dynamic load
