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RESEARCH PAPERS

Extensive Verification of the Denton New Scheme From the User’s Point of View: Part II—Comparison of Calculated and Experimental Results

[+] Author and Article Information
T. Sato, S. Aoki

Turbomachinery Research & Promotion Laboratory, Takasago Technical Institute, Mitsubishi Heavy Industries, Ltd., Japan

T. Nagayama

Turbomachinery Research Laboratory, Nagasaki Technical Institute, Mitsubishi Heavy Industries, Ltd., Japan

J. Turbomach 108(2), 170-177 (Oct 01, 1986) (8 pages) doi:10.1115/1.3262032 History: Received January 10, 1986; Online November 09, 2009

Abstract

A blade-to-blade flow program incorporated in the computer-aided turbine design system is required to have short run times, robustness, and no limitations. The Denton time-marching method published in 1982 is attractive as it is fast and can handle mixed subsonic-supersonic flows. Calibration of code control variables is discussed in part I. In this paper, the scheme is extensively verified by comparing calculated surface Mach number distributions with experimental data obtained from two-dimensional cascade tests for 23 cascades. For the nozzles, excellent agreement is obtained if the flows are fully subsonic, or transonic with weak shock–boundary layer interaction. For the blades, very good agreement is also obtained if the blades have moderate blade reaction and viscous effects are small. Satisfactory results are obtained for suction surface diffusion, even at off-design inlet conditions, if absolute values of incidence angle are less than 10 deg.

Copyright © 1986 by ASME
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