Fan Modelling in CFD Using RANS with MRF, Limitations and Consistency, a Comparison between Fans of Different Design
Paper in 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.
Author
Peter Gullberg
Chalmers, Applied Mechanics, Vehicle Engineering and Autonomous Systems
Lennart Löfdahl
Chalmers, Applied Mechanics, Vehicle Engineering and Autonomous Systems
Institution of Mechanical Engineers - VTMS 10, Vehicle Thermal Management Systems Conference and Exhibition
423-433
Areas of Advance
Transport
Energy
Subject Categories
Vehicle Engineering
Fluid Mechanics and Acoustics