Author: William James SteptoePublisher:
ISBN:
Category :
Languages : en
Pages : 140
Book Description
Integral Boundary Layer Heat Transfer Prediction on Turbine Blades
Author: William James SteptoePublisher:
ISBN:
Category :
Languages : en
Pages : 140
Book Description
Heat Transfer Measurements and Predictions on a Power Generation Gas Turbine Blade
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 22
Book Description
Detailed heat transfer measurements and predictions are given for a power generation turbine rotor with 129 deg of nominal turning and an axial chord of 137 mm. Data were obtained for a set of four exit Reynolds numbers comprised of the design point of 628,000, -20%, +20%, and +40%. Three ideal exit pressure ratios were examined including the design point of 1.378, -10%, and +10%. Inlet incidence angles of 0 deg and +/-2 deg were also examined. Measurements were made in a linear cascade with highly three-dimensional blade passage flows that resulted from the high flow turning and thick inlet boundary layers. Inlet turbulence was generated with a blown square bar grid. The purpose of the work is the extension of three-dimensional predictive modeling capability for airfoil external heat transfer to engine specific conditions including blade shape, Reynolds numbers, and Mach numbers. Data were obtained by a steady-state technique using a thin-foil heater wrapped around a low thermal conductivity blade. Surface temperatures were measured using calibrated liquid crystals. The results show the effects of strong secondary vortical flows, laminar-to-turbulent transition, and also show good detail in the stagnation region.
A Research Program for Improving Heat Transfer Prediction for the Laminar to Turbulent Transition Region of Turbine Vanes/blades
Author: Frederick F. SimonPublisher:
ISBN:
Category : Heat
Languages : en
Pages : 34
Book Description
Computation of Boundary Layer Transition for Gas Turbine Blades
Author: Amir RadmehrThree-dimensional Navier-Stokes Heat Transfer Predictions for Turbine Blade Rows
Author: Robert J. BoyleThe Aerothermodynamics of Aircraft Gas Turbine Engines
Author: Gordon C. OatesPublisher:
ISBN:
Category : Aerothermodynamics
Languages : en
Pages : 830
Book Description
Aerothermodynamics of Aircraft Engine Components
Author: Gordon C. OatesPublisher: AIAA
ISBN: 9781600860058
Category : Aerothermodynamics
Languages : en
Pages : 568
Book Description
Annotation Design and R & D engineers and students will value the comprehensive, meticulous coverage in this volume. Beginning with the basic principles and concepts of aeropropulsion combustion, chapters explore specific processes, limitations, and analytical methods as they bear on component design.
Prediction of Relaminarization Effects on Turbine Blade Heat Transfer
Author: Two-dimensional Navier-Stokes Heat Transfer Analysis for Rough Turbine Blades
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 16
Book Description
A quasi-three-dimensional thin-layer Navier-Stokes analysis was used to predict heat transfer to rough surfaces. Comparisons are made between predicted and experimental heat transfer for turbine blades and flat plates of known roughness. The effect of surface Toughness on heat transfer was modeled using a mixing length approach. The effect of near-wall grid spacing and convergence criteria on the accuracy of the heat transfer predictions are examined. An eddy viscosity mixing length model having an inner and outer layer was used. A discussion of the appropriate model for the crossover between the inner and outer layers is included. The analytic results are compared with experimental data for both flat plates and turbine blade geometries. Comparisons between predicted and experimental heat transfer showed that a modeling roughness effects using a modified mixing length approach results in good predictions of the trends in heat transfer due to roughness. Turbine, Heat transfer, Rough surface.
Author: