F • CONVECTIVE HEAT TRANSFER IN GASES 

 Table F,20. Emissivities of a few materials. 



is transferred to the skin from other parts, then such transfer must be 

 added to the right-hand side of the equation. The emissivities of a few 

 important materials are given in Table F,20 [61]. 



The solution of Eq. 20-1 is usually carried out by successive approxi- 

 mation because St is an implicit function of T^, Re^, and Me. 



650 



4 8 12 16 20 



Length of plate, ft 



Fig. F,20d. Temperature distribution along a flat plate moving at INIach number 3. 



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