Abstract
This paper presents results of numerical simulation development for flat plate film cooling with coolant injection through two rows of cylindrical holes arranged in spherical dimples. The previous experience has shown that application of standard turbulence models lead to significant difference between numerical simulation results and experimental data. The numerical simulation development lay in providing of correspondence between calculated and experimental film cooling efficiency values and was carried out with the use of commercial software package ANSYS CFX 14 in two stages. At first stage test calculations were performed for turbulence model second stage the adaptation of selected k-e turbulence model was performed with variation of modeling constant Ce1 within 0.8- 1.8 limits. Calculations showed that best agreement with experiment at blowing ratio m = 0.5 was provided with a standard constant value Ce1=1,44; at m = 1,0 it is reasonable to use value Ce1=1,2; at m=1,5 and 2,0 according to film cooling effectiveness downstream first and second rows best agreement is provided at Ce1=1,0. In calculations with recommended Ce1 values maximum discrepancy with experiment does not exceed 15 %.
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