Vortex suppression on high subsonic turbine blade via micro holes (30 Degree) / Mohd Hafiz Mohd Noh, Ahmad Hussein Abdul Hamid, and Koichi Moris

The vortex shedding of a turbine blade is suppressed by making a hole, connecting between the pressure side and suction side in the area of the trailing edge. Computational simulation has been done via numerical code by using Spalart-Allmaras turbulence model with Delayed Detached Eddy Simulation. T...

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Main Authors: Mohd Noh, Mohd Hafiz (Author), Abdul Hamid, Ahmad Hussein (Author), Moris, Koichi (Author)
Format: Book
Published: Universiti Teknologi MARA, 2022-01.
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245 0 0 |a Vortex suppression on high subsonic turbine blade via micro holes (30 Degree) / Mohd Hafiz Mohd Noh, Ahmad Hussein Abdul Hamid, and Koichi Moris 
260 |b Universiti Teknologi MARA,   |c 2022-01. 
500 |a https://ir.uitm.edu.my/id/eprint/60600/1/60600.pdf 
520 |a The vortex shedding of a turbine blade is suppressed by making a hole, connecting between the pressure side and suction side in the area of the trailing edge. Computational simulation has been done via numerical code by using Spalart-Allmaras turbulence model with Delayed Detached Eddy Simulation. The exit Reynolds number is 2.8 × 106 and the exit isentropic Mach number is 0.79. The size of the hole is 0.094D with a connecting angle of 30 degrees. The result shows that the vortex has successfully been suppressed at the turbine trailing edge and turbine wake area. The micro-hole is capable to reduce initial vortex formation which can be confirmed by the decrement of frequency peak and via observation of flow field vortex simulation. 
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