As InDesA has specialized on the simulation and analysis of complex flow and heat transfer systems with STAR-CCM+ such as the under-hood hot soak simulation for passenger cars , it has became evident that great care had to be taken to implement auxiliary components such as heat exchangers, cooling fans and coolant pumps in order to accurately predict the overall system behavior. InDesA has therefore started to build up its Virtual Test Facility Center to investigate hydraulic and heat transfer performance of automotive auxiliary components.
In the scope of this investigation auxiliary devices with rotating parts, namely cooling fans and coolant pumps, are examined with respect to hydraulic performance. Common to both components is often a range of unfavorable build-in conditions that occur due to tight packaging that can downgrade efficiency and also make it difficult to appropriately place the interfaces for the rotating reference frames or sliding meshes.
Both approaches, the multi reference frame method (MRF) and the sliding mesh method, are used to investigate the impact on the solution, convergence and compute time. In addition, a general test bench set-up was developed for performance prediction of coolant fans where - independent of package restrictions - different fan designs can be tested and compared with each other.
F. Bet, G. Seider ‘Vehicle Thermal Reliabilty with STAR-CCM+’, STAR European Conference 2010.
G. Seider, F. Bet ‘The InDesA Virtual Test Facility Environment’, STAR European Conference 2011.