Convective heat transfer optimization with rib's deployment in a turbulent offset jet flow

Dynamic and thermal characteristics of a turbulent and heated offset jet were numerically investigated using Ansys Fluent. The jet's heated bottom wall is mounted with a single square-section rib and characterized with constant heat flux. The flow velocity, at the nozzle exit, corresponds to a Re value of 39 000, besides the offset ratio is assumed to be fixed at 5. Nine different rib positions were tested in order to figure out which is the optimum one that enhances most the heat transfer. Detailed analysis of the development of the flow in addition to the convective heat transfer features is presented. The results showed that flow behavior changes significantly with the presence of the rib. Further, the heat transfer investigation revealed two optimum rib positions that guarantee the heat transfer amelioration.