Convective Heat Transfer
Convective Heat Transfer. Instructor: Dr. Arup Kumar Das, Department of Mechanical and Industrial Engineering, IIT Roorkee. Convection is a major mode of heat transfer when fluid is attached with the source. Processes of convection are fundamental and linked up with fluid mechanics laws and derivations of thermodynamics. Convective heat transfer has its wide horizon spreading from flow over a flat plate under constant heat flux or constant temperature boundary conditions to thermally developing or developed flow inside a duct. Moreover convection theories will widely vary depending on medium flow field which differentiates forced flow and natural gravity driven heat transfer modes. Convective heat transfer takes a major role in phase change heat transfer as well as mass transfer analogies in chemical processes. Present course targets fundamental understanding of all these facets with derivations and mathematical examples. (from nptel.ac.in)
| Lecture 15 - Thermal Entrance Region: Uniform Wall Temperature |
Introduce concept of thermal entrance length in hydrodynamically fully developed but thermally developing flow in pipe. Derive the energy equation and boundary condition into non dimensional form for uniform wall temperature of a duct. Reduce the energy equation into simplified form for thermally developing region with boundary condition. Determine the Nusselt number for thermally developing but hydrodynamically fully developed forced convection inside duct having constant wall temperature.
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