A swirl generator case study for OpenFOAM
Paper i proceeding, 2010

This work presents numerical results, using OpenFOAM, of the flow in the swirl flow generator test rig developed at Politehnica University of Timisoara, Romania. The work shows results computed by solving the unsteady Reynolds Averaged Navier Stokes equations. The unsteady method couples the rotating and stationary parts using a sliding grid interface based on a GGI formulation. Turbulence is modeled using the standard k-epsilon model, and block structured wall function ICEM-Hexa meshes are used. The numerical results are validated against experimental LDV results, and against designed velocity profiles. The investigation shows that OpenFOAM gives results that are comparable to the experimental and designed profiles. This case study was presented at the 5th OpenFOAM Workshop, held in Gothenburg, Sweden, as a tutorial on how to treat turbomachinery applications in OpenFOAM.

swirl generator

rotor-stator interaction


draft tube





Olivier Petit

Chalmers, Tillämpad mekanik, Strömningslära

Håkan Nilsson

Chalmers, Tillämpad mekanik, Strömningslära

Sebastian Muntean

Romeo F. Susan-Resiga

25th IAHR Symposium on Hydraulic Machinery and Systems



Strömningsmekanik och akustik