Novel flow control method for vortex shedding of turbine blade

Mahmoud M. El-Gend; Mohammed K. Ibrahim; Koichi Mor; Yoshiaki Nakamura

doi:10.2322/tjsass.53.122

Novel flow control method for vortex shedding of turbine blade

Mahmoud M. El-Gend, Mohammed K. Ibrahim, Koichi Mor, Yoshiaki Nakamura

Research output: Contribution to journal › Review article › peer-review

14 Citations (Scopus)

Abstract

Three-dimensional flow simulations through a turbine cascade were carried out for an exit isentropic Mach number of 0.79 and a Reynolds number of 2:8 × 10⁶. The main objective is to increase the base pressure. Calculations were carried out using an in-house numerical code, where a 2nd order Roe's flux-difference splitting for inviscid numerical fluxes, a 2nd order implicit dual time method for time integration, and Delayed Detached Eddy Simulation for turbulence were employed. The present idea to increase the base pressure is to connect the pressure and suction sides of the blade using microtubes distributed uniformly along the span on the trailing edge. Simulated results show that this modification does not affect the blade load, increases the base pressure by 0.7%, and decreases the overall loss by 3%.

Original language	English
Pages (from-to)	122-129
Number of pages	8
Journal	Transactions of the Japan Society for Aeronautical and Space Sciences
Volume	53
Issue number	180
DOIs	https://doi.org/10.2322/tjsass.53.122
Publication status	Published - 2010
Externally published	Yes

Keywords

CFD
Flow control
Microtubes
Turbine blade
Vortex shedding

ASJC Scopus subject areas

Aerospace Engineering
Space and Planetary Science

Access to Document

10.2322/tjsass.53.122

Cite this

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title = "Novel flow control method for vortex shedding of turbine blade",

abstract = "Three-dimensional flow simulations through a turbine cascade were carried out for an exit isentropic Mach number of 0.79 and a Reynolds number of 2:8 × 106. The main objective is to increase the base pressure. Calculations were carried out using an in-house numerical code, where a 2nd order Roe's flux-difference splitting for inviscid numerical fluxes, a 2nd order implicit dual time method for time integration, and Delayed Detached Eddy Simulation for turbulence were employed. The present idea to increase the base pressure is to connect the pressure and suction sides of the blade using microtubes distributed uniformly along the span on the trailing edge. Simulated results show that this modification does not affect the blade load, increases the base pressure by 0.7%, and decreases the overall loss by 3%.",

keywords = "CFD, Flow control, Microtubes, Turbine blade, Vortex shedding",

author = "El-Gend, {Mahmoud M.} and Ibrahim, {Mohammed K.} and Koichi Mor and Yoshiaki Nakamura",

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T1 - Novel flow control method for vortex shedding of turbine blade

AU - El-Gend, Mahmoud M.

AU - Ibrahim, Mohammed K.

AU - Mor, Koichi

AU - Nakamura, Yoshiaki

PY - 2010

Y1 - 2010

N2 - Three-dimensional flow simulations through a turbine cascade were carried out for an exit isentropic Mach number of 0.79 and a Reynolds number of 2:8 × 106. The main objective is to increase the base pressure. Calculations were carried out using an in-house numerical code, where a 2nd order Roe's flux-difference splitting for inviscid numerical fluxes, a 2nd order implicit dual time method for time integration, and Delayed Detached Eddy Simulation for turbulence were employed. The present idea to increase the base pressure is to connect the pressure and suction sides of the blade using microtubes distributed uniformly along the span on the trailing edge. Simulated results show that this modification does not affect the blade load, increases the base pressure by 0.7%, and decreases the overall loss by 3%.

AB - Three-dimensional flow simulations through a turbine cascade were carried out for an exit isentropic Mach number of 0.79 and a Reynolds number of 2:8 × 106. The main objective is to increase the base pressure. Calculations were carried out using an in-house numerical code, where a 2nd order Roe's flux-difference splitting for inviscid numerical fluxes, a 2nd order implicit dual time method for time integration, and Delayed Detached Eddy Simulation for turbulence were employed. The present idea to increase the base pressure is to connect the pressure and suction sides of the blade using microtubes distributed uniformly along the span on the trailing edge. Simulated results show that this modification does not affect the blade load, increases the base pressure by 0.7%, and decreases the overall loss by 3%.

KW - CFD

KW - Flow control

KW - Microtubes

KW - Turbine blade

KW - Vortex shedding

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JO - Transactions of the Japan Society for Aeronautical and Space Sciences

JF - Transactions of the Japan Society for Aeronautical and Space Sciences

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ER -

Novel flow control method for vortex shedding of turbine blade

Abstract

Keywords

ASJC Scopus subject areas

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