Experimental and Numerical Investigation of a Shock Wave Within a Swept Shrouded Propfan Rotor

[+] Author and Article Information
K. Helming

DLR, Institute for Propulsion Technology, Cologne, Federal Republic of Germany

J. Turbomach 118(1), 66-72 (Jan 01, 1996) (7 pages) doi:10.1115/1.2836608 History: Received February 18, 1994; Online January 29, 2008


Laser velocity measurements are conducted in a swept propfan rotor in order to investigate the local transonic flow region on the suction surface at high subsonic inlet Mach numbers. The velocity measurements are accompanied by a three-dimensional Navier–Stokes calculation for a selected operating point. The good agreement between computed and measured flow field gives some confidence to study the local three-dimensional passage shock on the suction surface by using the numerical procedure. Apart from the computed three-dimensional shock, structure is investigated in detail. By considering streamlines, it is concluded whether the shock wave is normal or oblique. The results are compared with the one-dimensional shock conditions.

Copyright © 1996 by The American Society of Mechanical Engineers
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