Numerical Heat Transfer Part B Fundamentals · 1984 · 93 citations · 0 references
EngineeringComputational EngineeringMechanical EngineeringComputational Fluid DynamicsFluid DynamicsHeat TransferFlow SeparationHeat Transfer ModelingPipe FlowThermal Boundary LayersTurbulenceTurbulent FlowHeat Transfer In PipesHeat Transfer MechanismsNear-wall TurbulenceTurbulence ModelingTurbulent Flows In PipesWall FunctionsWall Heat TransferWall Turbulence
A numerical study is reported of flow and heat transfer in the separated and reattached flows created by an abrupt pipe expansion. In the study attention has been given primarily to the development of turbulence near-wall models based on the wall function. An efficient numerical method is also employed for the computation of high-velocity flows. The computed results are compared with experimental data obtained earlier. Generally, better results are obtained by employing the present near-wall models, and among them the three-layer model is superior to the two-layer one.