 problem aerodynam heat problem aerodynam heat paper good review knowledg convect heat transfer object move air low high speed theoret experiment recoveri factor heat-transfer coeffici isotherm surfac unswept flat plate wedg cone attach shock wave stagnat point blunt bodi revolut laminar turbul boundari layer conveni nomograph calcul flat plate turbul boundari-layer heat-transfer coeffici effect surfac cool surfac rough suppli stream turbul transit discuss graphic 