The ERCOFTAC centrifugal pump OpenFOAM case-study
Paper in proceedings, 2009
This work investigates the rotor-stator interaction features of OpenFOAM-1.5-dev, such as frozen
rotor and sliding grid. The case studied is the ERCOFTAC Test Case U3: Centrifugal Pump with a
Vaned Diffuser, a testcase from the ERCOFTAC Turbomachinery Special Interest Group. The case
was presented by Combès at the ERCOFTAC Seminar and Workshop on Turbomachinery Flow
Prediction VII, in Aussois, 1999. It is a valid test case for evaluation of rotor-stator interaction
features, as detailed experimental data is available.
The investigation shows that OpenFOAM gives results that are comparable to the experimental data,
in particular for the sliding grid case. The results are less accurate in the frozen rotor simulation due to
the improper treatment of the impeller wakes that is part of the frozen rotor formulation.
The ERCOFTAC centrifugal pump OpenFOAM case-study was developed as a contribution to the
OpenFOAM Turbomachinery Working Group, and was presented and discussed at the Fourth
OpenFOAM Workshop in Montréal, 2009. The complete set-up of the case-study is available from the
OpenFOAM-extend project at SourceForge, and instructions and comments are available from the
ERCOFTAC centrifugal pump