Heat transfer of arbitrarily nonisothermic surfaces with gradient turbulent flow of an incompressible liquid within a wide range of Prandtl and Reynolds numbers

Equations are obtained based on a solution of thermal boundary-layer equations for the heat-transfer coefficients of turbulentaly streamlined nonisothermic surfaces within a wide range of $\rm Pr$ and $\rm Re$ numbers. The influence of the nonisothermicity of the streamlined surface on its heat transfer for different gradients and different $\rm Pr$ and $\rm Re$ number is investigated.