Integration Group

Overview | Multi-code Interface Development | Applications | Publications | People

Multi-code Interface Development

We have developed a framework, which allows executing the flow solvers simultaneously using the message passing interface MPI. In order to increase the efficiency, the interface routines are implemented into the software of the flow solvers. The algorithms allow processors involved in the code-to-code communication pass data directly to its peers (PDF).

Most of our efforts were focused on the development of the interface boundary conditions. The different approach of RANS and LES in modeling turbulence is one of the most challenging obstacles. We have developed LES inflow (PDF) and LES outflow (PDF) boundary conditions adapted to this environment. RANS boundary conditions have been tested. The conservation of dynamic properties over the interface is achieved by filtering (PDF).

An overview of recent work is this article:

A Framework for Coupling Reynolds-Averaged with Large Eddy Simulations for Gas Turbine Applications, J. U. Schlüter, X. Wu, S. Kim, J. J. Alonso, and H. Pitsch, Journal of Fluids Engineering, submitted 2004.