Author: Vijay K. GargPublisher:
ISBN:
Category :
Languages : en
Pages : 18
Book Description
Presented at the International Gas Turbine and Aeroengine Congress & Exposition, Houston, Texas - June 5-8, 1995.
Effect of Velocity and Temperature Distribution at the Hole Exit on Film Cooling of Turbine Blades
Author: Vijay K. GargPublisher:
ISBN:
Category :
Languages : en
Pages : 18
Book Description
Presented at the International Gas Turbine and Aeroengine Congress & Exposition, Houston, Texas - June 5-8, 1995.
EFFECT OF VELOCITY AND TEMPERATURE DISTRIBUTION AT THE HOLE EXIT ON FILM COOLING OF TURBINE BLADES... NASA/TM-97-208146... AUG. 6, 1998
Author: United States. National Aeronautics and Space AdministrationPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Effect of Film-Hole Shape on Turbine Blade Film Cooling Performance
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781720482284
Category :
Languages : en
Pages : 64
Book Description
The detailed heat transfer coefficient and film cooling effectiveness distributions as well as tile detailed coolant jet temperature profiles on the suction side of a gas turbine blade A,ere measured using a transient liquid crystal image method and a traversing cold wire and a traversing thermocouple probe, respectively. The blade has only one row of film holes near the gill hole portion on the suction side of the blade. The hole geometries studied include standard cylindrical holes and holes with diffuser shaped exit portion (i.e. fanshaped holes and laidback fanshaped holes). Tests were performed on a five-blade linear cascade in a low-speed wind tunnel. The mainstream Reynolds number based on cascade exit velocity was 5.3 x 10(exp 5). Upstream unsteady wakes were simulated using a spoke-wheel type wake generator. The wake Strouhal number was kept at 0 or 0.1. Coolant blowing ratio was varied from 0.4 to 1.2. Results show that both expanded holes have significantly improved thermal protection over the surface downstream of the ejection location, particularly at high blowing ratios. However, the expanded hole injections induce earlier boundary layer transition to turbulence and enhance heat transfer coefficients at the latter part of the blade suction surface. In general, the unsteady wake tends to reduce film cooling effectiveness.Han, J. C. and Teng, S.Glenn Research CenterHEAT TRANSFER COEFFICIENTS; COOLANTS; TEMPERATURE PROFILES; SUCTION; TURBINE BLADES; HEAT MEASUREMENT; FILM COOLING; BOUNDARY LAYER TRANSITION; CASCADE WIND TUNNELS; CYLINDRICAL BODIES; EJECTION; GAS TURBINES; HOLE DISTRIBUTION (MECHANICS); LIQUID CRYSTALS; LOW SPEED; THERMAL PROTECTION; THERMOCOUPLES; WIND TUNNELS
Heat Transfer on a Film-Cooled Blade - Effect of Hole Physics
Author: Scientific and Technical Aerospace Reports
Author: Leading Edge Film Cooling Effects on Turbine Blade Heat Transfer
Author: Vijay K. GargPublisher:
ISBN:
Category :
Languages : en
Pages : 26
Book Description
Presented at the International Gas Turbine and Aeroengine Congress and Exposition, Houston, Texas - June 5-8, 1995.
The Effect of Wake Passing on Turbine Blade Film Cooling
Author: James D. HeidmannPublisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 272
Book Description
Effect of Film-Hole Shape on Turbine Blade Film Cooling Performance
Author: Scientific and Technical Aerospace Reports
Author: Modelling and Simulation of Turbulent Heat Transfer
Author: B. SundénPublisher: WIT Press
ISBN: 1853129569
Category : Science
Languages : en
Pages : 361
Book Description
Providing invaluable information for both graduate researchers and R & D engineers in industry and consultancy, this book focuses on the modelling and simulation of fluid flow and thermal transport phenomena in turbulent convective flows. Its overall objective is to present state-of-the-art knowledge in order to predict turbulent heat transfer processes in fundamental and idealized flows as well as in engineering applications. The chapters, which are invited contributions from some of the most prominent scientists in this field, cover a wide range of topics and follow a unified outline and presentation to aid accessibility.