Design and installation of a test bench for combustion
chamber cooling investigations of gas turbines are carried out.
The test bench mainly consists of a radial fan, an electrical
heater, an air tunnel, a test section, and cooling air supply
system. The combustor liner is presented by a flat test plate
which is a scaled-up model of a real combustor geometry. Main
flow can be provided at a temperature in the range of
298-573 K, which enables a wide range of density and blowing
ratio between the main flow and the coolant. The surface
temperature distribution of the test plate is measured by
infrared thermography technique to determine the adiabatic
cooling effectiveness. The test bench enables to investigate the
effects of different geometrical and flow parameters on effusion
and film cooling effectiveness.
Papers presented to the 12th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Costa de Sol, Spain on 11-13 July 2016.