Thermal flux distribution over the inside surface of a heated tube with a cylindrical groove on the outside

The heat conduction problem is solved for an electrically heated tube with a cylindrical groove on the outside surface. The thermal flux over the inside surface is calculated as a function of the geometrical parameters.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 22, No. 2, pp. 325–330, February, 1972.