Question: Transpiration cooling (a) Calculate the temperature distribution between the two shells of Example 11.4-4 for radial mass flow rates of zero and 10 -5 g/s

Transpiration cooling

(a) Calculate the temperature distribution between the two shells of Example 11.4-4 for radial mass flow rates of zero and 10 -5 g/s for the following conditions:

(b) Compare the rates of heat conduction to the surface at KR in the presence and absence of convection.

TR = 300°C T, = 100°C k = 6.13 x 10-5 cal/cm · s·C R = 500 microns KR = 100 microns 0.25 cal/g · C

TR = 300C T, = 100C k = 6.13 x 10-5 cal/cm sC R = 500 microns KR = 100 microns 0.25 cal/g C

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