Technical Data Report

Indianapolis, Indiana im liMIW In^W 46206-0420 USA

9 of 17

report no.

title

VBI3D Unsteady Flow Analysis of the Purdue Low Soeed Turbine Research Rig 1st Stage

prepared date

Kurt F. Weber

checked

approved

In Figure 9, particle traces are used to display some of the flow through the tip clearance region. In Figure 9a, the view is from the passage slightly upstream of the rotor looking circumferentially at the flow coming through the clearance region to the suction side of the blade. In Figure 9b, the view is from downstream of the rotor looking upstream at the flow coming through the clearance region to the suction side of the blade. Some of the tip clearance flow closest to the tip of the blade became wrapped up tightly in a vortex close to the tip of the blade and the suction surface. Flow that was closer to the shroud was swept radially downward and away from the suction surface. The downstream location of the flow depends on where the flow came through the clearance region.

PROPRIETARY RIGHTS LEGEND This technical data and the information embodied herein is the property of and proprietary to Rolls-Royce Corporation, and shall not, without prior written permission of RoHs-F oyce Corporation, be disclosed in whole or In pen to third partie*. This legend shall be included on any reproduction of this data in whole or in paƮt. Copyright 2000 - Rolls-Royce

Corporation, (unpublished)

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