A Comparison of Cylindrical and Row Trenched Cooling Holes with Alignment Angle of 90 Degree Near the Combustor Endwall

Ehsan Kianpour; Nor Azwadi C. Sidik; Syahrullail Samion

doi:10.15866/ireme.v7i6.3925

A Comparison of Cylindrical and Row Trenched Cooling Holes with Alignment Angle of 90 Degree Near the Combustor Endwall

Ehsan Kianpour^(1*), Nor Azwadi C. Sidik⁽²⁾, Syahrullail Samion⁽³⁾

^(*) Corresponding author

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Abstract

This study was carried out to find out the effects of cylindrical and row trenched cooling holes with alignment angle of 90 degree on the film cooling performance adjacent the end wall surface of a combustion simulator. In this research a linear representation of a true Pratt and Whitney gas turbine aero-engine was simulated and analyzed. The current study has been performed with Reynolds-averaged Navier-Stokes turbulence model (RANS) on internal cooling passage. This combustor simulator combined the interaction of two rows of dilution jets, which were staggered in the stream wise direction and aligned in the span wise direction. The entire findings of the study declared that when, the row trenched holes used the, near the enwall surface, film cooling effectiveness is almost two times more than film cooling performance of baseline case.
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Keywords

Gas Turbine; Film Cooling; Thermal Contour; Cylindrical Holes; Trenched Holes

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References

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