An aerodynamic analysis of turbine cascade by using a second-order closure of turbulence

Numerical predictions of cascade flows within an axial turbine stage are analyzed in this paper. A second-order Reynolds stress turbulence closure model was employed, which was formulated using the body-fitted curvilinear coordinates. The fractional step method of a finite difference scheme was empl...

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Bibliographic Details
Published in:International journal of heat and fluid flow 1996-06, Vol.17 (3), p.276-282
Main Authors: Amano, R.S., Rieger, N.F., Hesler, S.
Format: Article
Language:English
Subjects:
Applied sciences
Energy
Energy. Thermal use of fuels
Engines and turbines
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Exact sciences and technology
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Summary:Numerical predictions of cascade flows within an axial turbine stage are analyzed in this paper. A second-order Reynolds stress turbulence closure model was employed, which was formulated using the body-fitted curvilinear coordinates. The fractional step method of a finite difference scheme was employed for the numerical computations. The computations of the pressure, heat transfer, and turbulence stresses are presented in both stator and rotor flow regions. Comparisons are made between the Reynolds stress model and the k - ε model and demonstrated the superiority of the Reynolds stress model.
ISSN:0142-727X
1879-2278
DOI:10.1016/0142-727X(96)00027-6