An 1:2,5 scale Cab-over-Engine tractor-trailor model including an heat exchanger is used to investigate the aerodynamic behavior as well as aspects of the thermal management for the under hood flow especially in an early stage of development. The analysis is based on the experimental and numerical investigation of the drag coefficient and the air temperature at the under hood flow. Especially answers about the air temperature and the routing of the hot air flow throw the under hood can be investigated for load cases without an operating fan. The study shows that the prediction of the drag coefficient is excellent and the deviation for the air temperature between measurement and simulation is increased only if the distance form the heat exchanger is large. Furthermore, it is possible to use this method for the development of new concepts because the prediction accuracy for different boundary conditions and designs in measurement and simulation is very well.
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An 1:2,5 scale Cab-over-Engine tractor-trailor model including an heat exchanger is used to investigate the aerodynamic behavior as well as aspects of the thermal management for the under hood flow especially in an early stage of development. The analysis is based on the experimental and numerical investigation of the drag coefficient and the air temperature at the under hood flow. Especially answers about the air temperature and the routing of the hot air flow throw the under hood can be invest...
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