SIMULATION OF HEAT-TRANSFER TO FLOW IN RADIAL GROOVES OF FRICTION PAIRS

The naphthalene sublimation technique and numerical solution of the go verning equations are used to study the mechanism of heat transfer in the radial grooves of cooled disc friction pairs. It is shown that a m ain eddy generated by the relative motion of the friction pair creates an effective mechanism of heat transfer to the fluid flowing in the r adial grooves. The effect of Coriolis forces and a thin film separatin g the plates on the heat transfer coefficient are investigated. Numeri cal and experimental Sherwood numbers for mass transfer agree to withi n the estimated experimental accuracy of 12%. Sample numerical results are used to describe the detailed behavior of the system.