Turbine Blade Transient Heat Transfer Computer Code

Abstract

A program, TACT1, to calculate transient and steady-state temperatures, pressures, and coolant flows in a cooled turbine blade or vane with an impingement insert, is described. Input to the program includes a description of the blade geometry, coolant supply conditions, outside thermal boundry conditions, and wheel speed. Coolant side heat transfer coefficients are calculated internally in the program, with the user specifying the mode of heat transfer at each internal flow station. Program output includes the temperature at each node, the coolant pressures and flow rates, and the inside heat transfer coefficients. The program is used at the NASA Lewis Research Center on an IBM TSS/360-67 computer. The source program consists of approximately 6200 lines of code and the program requires about 60,000 words of storage. Typical running times for the program are about 1.4 s of CPU time per calculational station for a steady-state run, and about 0.4 s of CPU time per station per time step for a transient run.