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

Mohd Noh, Mohd Hafiz and Abdul Hamid, Ahmad Hussein and Moris, Koichi (2022) Vortex suppression on high subsonic turbine blade via micro holes (30 Degree) / Mohd Hafiz Mohd Noh, Ahmad Hussein Abdul Hamid, and Koichi Moris. Journal of Mechanical Engineering (JMechE), 19 (1): 12. pp. 239-250. ISSN (eISSN): 2550-164X

Abstract

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.

Metadata

Item Type: Article
Creators:
Creators
Email / ID Num.
Mohd Noh, Mohd Hafiz
mhafiz_noh@yahoo.com
Abdul Hamid, Ahmad Hussein
UNSPECIFIED
Moris, Koichi
UNSPECIFIED
Subjects: T Technology > TC Hydraulic engineering. Ocean engineering > Dams. Barrages
Divisions: Universiti Teknologi MARA, Shah Alam > Faculty of Mechanical Engineering
Journal or Publication Title: Journal of Mechanical Engineering (JMechE)
UiTM Journal Collections: UiTM Journal > Journal of Mechanical Engineering (JMechE)
ISSN: (eISSN): 2550-164X
Volume: 19
Number: 1
Page Range: pp. 239-250
Keywords: Turbine Blade, Flow Field, Numerical Investigation
Date: January 2022
URI: https://ir.uitm.edu.my/id/eprint/60600
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