Fan Modelling in CFD Using RANS with MRF, Limitations and Consistency, a Comparison between Fans of Different Design
Paper i proceeding, 2011

This paper will present a comparison between measured and CFD simulated fan performance characteristics of three different types of heavy duty truck fans. The test bench incorporates a fan, fan ring, shroud and 3D engine blockage. The latter creates a severe constraint to the use of simplified 3D CFD fan models (MRF-model). The results illustrates that the MRF methodology is consistent with test data for axial flow conditions up to fan transition, i.e. this methodology could be used for applications with a correctly installed axial fan. However after fan transition the methodology is not consistent any more.


Peter Gullberg

Chalmers, Tillämpad mekanik, Fordonsteknik och autonoma system

Lennart Löfdahl

Chalmers, Tillämpad mekanik, Fordonsteknik och autonoma system

Institution of Mechanical Engineers - VTMS 10, Vehicle Thermal Management Systems Conference and Exhibition







Strömningsmekanik och akustik

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