HEAT-TRANSFER AND FRICTION RESISTANCE AT THE TURBULENT-FLOW IN A FLAT CURVILINEAR CHANNEL

The effect of body (Coriolis) forces, occurring under conditions of flow of liquid along a curvilinear surface, on turbulent transfer is investigated on the basis of the model for turbulent stresses and heat fluxes. The effect of temperature and density fluctuations in the field of body forces is also included. The relations for turbulent viscosity, turbulent stresses, and heat fluxes as a function of the Richardson number or thermal Richardson number are derived. The numerical finite-difference solution of the equations of motion and energy for the case of stabilized turbulent flow and heat transfer in a plane channel is given. The results of the calculation of heat transfer and resistance are in good agreement with the available experimental data and show a considerable increase of the Nusselt number and friction resistance coefficient on a concave wall as compared with a convex one, as well as an increase of hydraulic resistance.