If laminar flow is induced at the surface of a disk dueto
Chapter 6, Problem 6.16(choose chapter or problem)
If laminar flow is induced at the surface of a disk dueto rotation about its axis, the local convection coeffi-cient is known to be a constant, h?C, independent ofradius. Consider conditions for which a disk of radiusro?100 mm is rotating in stagnant air at T??20Cand a value of C?20 W/m2?K is maintained.If an embedded electric heater maintains a surfacetemperature of Ts?50C, what is the local heat flux atthe top surface of the disk? What is the total electricpower requirement? What can you say about the natureof boundary layer development on the disk?
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