3-D Navier-Stokes Solver for the Simulation of the Unsteady Turbomachinery Flow on a Massively Parallel Hardware Architecture
An interactive flow simulation system has been developed by the authors to study and analyze unsteady flow phenomena in turbomachinery components. The flow solver along with a data processing unit has been parallelized based on domain decomposition using the communication libraries PVM or MPI. The flow solver can be run on heterogeneous workstation clusters and on various parallel hardware platforms.
For full scalability, time integration is based on explicit, fully local algorithms. Stability is enhanced through a time accurate two-grid approach or a dual time stepping procedure. Convection is handled by second order TVD upwind schemes. The in- and outflow boundaries are treated with a non-reflecting boundary condition technique. Turbulence is accounted for by using the Spalart-Allmaras one-equation model.
Various examples of application are presented to demonstrate the usefulness of the developed simulation system.
KeywordsUnsteady Flow Domain Decomposition Eddy Viscosity Flow Solver Outflow Boundary
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