Experimental Research on Two-Dimensional Transonic Cascades of an 850-mm Steam Turbine Blade

[+] Author and Article Information
Dafu Min, Xiaoyi Ai

Aerodynamic Laboratory, Beijing Heavy Electric Machinery Works, Beijing, People’s Republic of China

J. Turbomach 111(3), 231-235 (Jul 01, 1989) (5 pages) doi:10.1115/1.3262260 History: Received December 01, 1987; Online November 09, 2009


Aerodynamic experiments on three cascades of an 850-mm steam turbine blade have been performed. Several Schlieren photographs that give clear shock structures and dynamic performances at different Mach numbers have been obtained by a Schlieren-videcorder system. On the basis of the experimental data, we analyzed the generation and development of the shock patterns in the transonic turbine casade channel and their influence on the aerodynamic performance was analyzed. Through discussions and analysis, it is shown that these cascades characterize high loading capacity with satisfactory efficiency.

Copyright © 1989 by ASME
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