A Control Volume Finite Difference (CVFD) code which finds the heat transfer coefficients resulting in a calculated thermal field that matches the thermal field obtained in experiments, was developed. The code is capable of solving unsteady conduction. and convection-diffusion problems in two or three dimensions using cylindrical coordinates. The complex problem of the workpiece cooling, was decomposed into smaller sub-problems corresponding to the different cooling zones. For each sub-problem an inverse-problem approach was applied using data from cooling experiments as a reference. As the result, the heat transfer coefficients were determined for a workpiece cooling in air, including the effect of the chuck, and by impinging coolant jet. The latter is defined by a distribution function. The thermal field calculated using the heat transfer coefficients determined in this research was found to be in reasonable agreement with the thermal field obtained from experiments conducted during cutting.

Kops, L. (Supervisor)