An experimental and computational investigation is conducted on the flow and heat transfer characteristics on and around a surrogate engine mount. The engine mount in an automobile is often in the close proximity of the catalytic converter, and may be subjected to considerable thermal radiation, combined with thermal conduction from the engine block through its bracket. The objective of this study is to develop a validated model that is capable of accurately predicting the temperature distribution on the mount. Two sets of heaters were implemented in the present study, both with controllable temperatures: band heaters to approximate the catalytic converter and cartridge heaters to represent the effect of the engine block at the bracket base. Carefully controlled experiments were first conducted with fixed heater temperatures, air flow rates, and bracket (at the base of the mount) temperatures. The temperatures were recorded at 22 different locations along the mount surface and the mount bracket for all input conditions. A computational fluid dynamics (CFD) model was next developed to simulate the same experiments. The simulations were conducted using roughly 5–6 million control volume (cells). The mesh was generated using ANSA™ and parallel computations of the governing equations were conducted using Ansys-Fluent™. For the broad matrix of cases considered, average predicted temperatures were found to agree with experimentally measured temperature to within 10°C (out of 300°C total variation), while local temperatures were found to agree within 10%.

This content is only available via PDF.
You do not currently have access to this content.