| Hot soaking is a process that is used during the testing of a vehicle to study the effects of exposure to heat on vehicle components. The occurrence of a rapid increase of temperature during this process is important since it can affect the durability and performance of vehicle components.; In the present work, computational fluid dynamics (CFD) simulations were performed to study the performance of various turbulence models, needed in computations associated with convective heat transfer with the help of invariant or realizability diagrams. Three cases exhibiting phenomena associated with hot soaking were evaluated to understand the performance of turbulence models and CFD for simulating turbulent heat transfer: single phase turbulent flow through a pipe with a 90 degree bend, natural convection in a 2D square enclosure, and a two dimensional simulation of a cylinder above a heated plate. These cases aided in the development of a numerical simulation of the hot soaking process. Numerical results of the simulation illustrate the high temperature regions developed on the cylinder surface and the production of realizable turbulent heat transfer from the heated plate. |
