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Nomenclature B = mass injection parameter C f = skin-friction coefficient H e = total enthalpy h -enthalpy K = ratio of enthalpy L = characteristic length M = mass velocity parameter (pvjjpu)q w = heat flux at the wall Re = Reynolds number St = Stanton number T = absolute temperature u = velocity in the stream direction v = velocity in the ^-direction x = coordinate distance measured from actual origin of boundarylayer growth x 0 = length of porous plate 3; = coordinate distance measured perpendicular to surface /? = ratio of enthalpy deficit thickness to momentum thickness 6 = velocity boundary-layer thickness 6 h = enthalpy deficit thickness S T = thermal boundary-layer thickness S L = compressibility factor r\ = film-cooling effectiveness parameter 0 = momentum thickness