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Vibration Characteristics of a Transonic Turbine Cascade
1998The vibration characteristics of a transonic steam turbine cascade with a thin airfoil were experimentally studied by the influence coefficient method in a linear cascade tunnel. Two types of flow field were adopted for the experiment: one in near-design condition and the other in off-design condition of low pressure ratio.
T. Watanabe, M. Aotsuka, Y. Machida
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The Trailing Edge Loss of Transonic Turbine Blades
Volume 1: Turbomachinery, 1989Trailing edge loss is one of the main sources of loss for transonic turbine blades, contributing typically 1/3 of their total loss. Transonic trailing edge flow is extremely complex, the basic flow pattern is understood but methods of predicting the loss are currently based on empirical correlations for the base pressure.
J. D. Denton, L. Xu
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Analysis and Prediction of Transonic Turbine Blade Losses
Volume 1: Turbomachinery, 1991The use of simple computational means to determine the performance of cascades of turbine blades is attractive because it can quickly and economically yield results that can be used for optimization of classes of blades. Fully viscous flow computations are not at the point where they are economical for use in a routine way, and most computational ...
C. L. S. Farn, D. K. Whirlow, S. Chen
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Assessment of the Flow Quality of a Transonic Turbine Cascade
Volume 7: Turbomachinery, Parts A and B, 2009The assessment of flow quality through a newly constructed transonic turbine cascade is presented. Although the main objective of this research was to investigate the effect of the modification of a vane profile due to repair on pressure loss, only the results for checking the flow periodicity, two-dimensionality of the flow and transonic exit flow ...
R. Woodason, A. Asghar, W. D. E. Allan
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A Simple Procedure to Compute Losses in Transonic Turbines Cascades
Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery, 1985The prediction of losses in transonic flow in turbines is an important step in the design of turbine stages, but at the same time requirements of simplicity and speed are needed to allow the work of designers. The paper presents a procedure developed to match this goal. It uses classical codes, experimental correlations and simple geometrical models of
MARTELLI, FRANCESCO, Boretti A. A.
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Aerodesign of a Transonic Contrarotating Turbine for a Rocket Engine
45th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2009Contra-rotating turbines offer reduced size, weight, and cooling requirements, compared to conventional co-rotating machinery. In spite of the associated mechanical complexity of, their aero-thermal performance is superior to conventional turbines not only because stator blade rows are eliminated, but also lower turning airfoils can be implemented ...
Guillermo Paniagua +4 more
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Time Resolved DPIV in a Transonic Turbine Cascade
Volume 10: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B, and C, 2008This paper presents an extension of existing Proper Orthogonal Decomposition (POD) based methods for gappy data reconstruction to allow its use with experimental data without a priori knowledge of the ‘True’ solution, and applies it time-resolved DPIV data taken in a transonic turbine cascade.
Samuel Raben +3 more
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Heat transfer prediction on transonic turbine blades
Revue Générale de Thermique, 1997The design and optimization of turbine blades submitted to high-temperature flows require the prediction of aerodynamic and thermal flow characteristics. A computation method for aerothermal viscous flows has been developed. The method is based on a compressible boundary layer approach. Tests were performed on turbine blade configurations.
Pascale Kulisa, Jean-Michel Fougères
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Throughflow Calculations for Transonic Axial Flow Turbines
Journal of Engineering for Power, 1978The development of a streamline curvature throughflow program to predict the flow through the low pressure stages of large steam turbines is described. The program can also be used for gas turbines. Difficulties encountered in dealing with transonic flow and multiple high pressure ratio stages are discussed.
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Performance Measurement of the Second Stage of a Transonic Turbine
Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery, 2001In November 1999 the turbine test facility at the Institute for Thermal Turbomachinery and Machine Dynamics was completed. This test stand is a cold flow transonic test turbine facility, which is a unique combination of a 2.3 MW axial test turbine and a directly-coupled compressor that generates about the half of the compressed air needed to drive the ...
A. Seyr +4 more
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