Unsteady Aerodynamics and Heat Transfer in a Transonic Turbine Stage PDF Download
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Author: D. A. Ashworth
Publisher:
ISBN:
Category : Gas-turbines
Languages : en
Pages : 0
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Author: D. A. Ashworth
Publisher:
ISBN:
Category : Gas-turbines
Languages : en
Pages : 0
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Author: Vikram Shyam
Publisher: BiblioGov
ISBN: 9781289035730
Category :
Languages : en
Pages : 42
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Unsteady 3-D RANS simulations have been performed on a highly loaded transonic turbine stage and results are compared to steady calculations as well as to experiment. A low Reynolds number k-epsilon turbulence model is employed to provide closure for the RANS system. A phase-lag boundary condition is used in the tangential direction. This allows the unsteady simulation to be performed by using only one blade from each of the two rows. The objective of this work is to study the effect of unsteadiness on rotor heat transfer and to glean any insight into unsteady flow physics. The role of the stator wake passing on the pressure distribution at the leading edge is also studied. The simulated heat transfer and pressure results agreed favorably with experiment. The time-averaged heat transfer predicted by the unsteady simulation is higher than the heat transfer predicted by the steady simulation everywhere except at the leading edge. The shock structure formed due to stator-rotor interaction was analyzed. Heat transfer and pressure at the hub and casing were also studied. Thermal segregation was observed that leads to the heat transfer patterns predicted by steady and unsteady simulations to be different.
Author: F. Didier
Publisher:
ISBN:
Category :
Languages : en
Pages : 11
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 6
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The objective of the research effort is to integrate fluid and heat transfer studies in a heated transonic turbine cascade in order to develop a better understanding of the complex flow physics involved in the coupling of the fluid flow and heat transfer phenomena in an unsteady flowfield. To that end detailed, time resolved aerodynamic and heat transfer measurements are taken in the experiments. Unsteady passing shock is generated in a shock tube and introduced into the test section of the cascade to simulate the shock wave passage similar to an actual turbine environment.
Author: V. Michelassi
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 26
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Author: Matthew Lee Krumanaker
Publisher:
ISBN:
Category :
Languages : en
Pages : 240
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Author: Torsten H. Fransson
Publisher: Springer Science & Business Media
ISBN: 9401150400
Category : Science
Languages : en
Pages : 835
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Book Description
Twenty-one years have passed since the first symposium in this series was held in Paris (1976). Since then there have been meetings in Lausanne (1980), Cambridge (1984), Aachen (1987), Beijing (1989), Notre Dame (1991) and Fukuoka (1994). During this period a tremendous development in the field of unsteady aerodynamics and aeroelasticity in turbomachines has taken place. As steady-state flow conditions become better known, and as blades in the turbomachine are constantly pushed towards lower weight, and higher load and efficiency, the importance of unsteady phenomena appear more clearly. th The 8 Symposium was, as the previous ones, of high quality. Furthermore, it presented the audience with the latest developments in experimental, numerical and theoretical research. More papers than ever before were submitted to the conference. As the organising committee wanted to preserve the uniqueness of the symposium by having single sessions, and thus mingle speakers and audience with different backgrounds in this interdisciplinary field, only a limited number of papers could be accepted. 54 papers were accepted and presented at the meeting, all of which are included in the present proceedings.
Author: R. J. G. Norton
Publisher:
ISBN:
Category : Aerodynamics, Transonic
Languages : en
Pages :
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Author: Reza Shokrollah-Abhari
Publisher:
ISBN:
Category :
Languages : en
Pages : 524
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