Small-amplitude disturbances in turbomachine flows with swirl

Cover of: Small-amplitude disturbances in turbomachine flows with swirl |

Published by National Aeronautics and Space Administration, National Technical Information Service, distributor in [Washington, DC, Springfield, Va .

Written in English

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  • Cascade flow.,
  • Compressible flow.,
  • Fluid dynamics.,
  • Perturbation theory.,
  • Potential flow.,
  • Steady flow.,
  • Swirling.,
  • Turbomachine blades.

Edition Notes

Book details

Other titlesSmall amplitude disturbances in turbomachine flows with swirl.
StatementDavid W. Wundrow.
SeriesNASA contractor report -- 195406., NASA contractor report -- NASA CR-195406.
ContributionsUnited States. National Aeronautics and Space Administration.
The Physical Object
Pagination1 v.
ID Numbers
Open LibraryOL15408525M

Download Small-amplitude disturbances in turbomachine flows with swirl

SMALL-AMPLITUDE DISTURBANCES IN TURBOMACHINE FLOWS WITH SWIRL By David W. Wundrow Nyma, Inc. Lewis Research Center Cleveland_ OhioUSA Abstract A method is proposed for determining the response of the steady swirling potential flow past a blade row in an axial turbomachine to the most general type of 'non-acoustic' incident disturbance.

Get this from a library. Small-amplitude disturbances in turbomachine flows with swirl. [David W Wundrow; United States. National Aeronautics and Space Administration.]. Solid body rotation, free vortex swirl, constant swirl profiles or a superposition of them have been analysed over the last years.

Important works in the field were performed by Kerrebrock In previous work [A.J. Cooper & N. Peake, Journal of Fluid Mechanics () –] radially sheared axial mean flow with nonzero swirl in a. Focusing on phenomena important in implementing the performance of a broad range of fluid devices, this work describes the behavior of internal flows encountered in propulsion systems, fluid machinery (compressors, turbines, and pumps) and.

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We discuss the two disparate structures that have been proposed for two-dimensional (eigen-) disturbances, the first due to Lam & Rott () and Ackerberg & Phillips () and the second due to Brown & Stewartson ().

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etd The swirl and throughow velocities in Fig. 13 are characteristic for a volute operating at maximum mass ow. As mentioned before, the ow at the diffuser exit results in a forced vortex-type secondary ow inside the volute with an increase of swirl velocity from the volute center to the volute walls and a maximum throughow velocity in the vortex core.5/5(1).

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Dixon, B. Eng., Ph.D. Honorary Senior Fellow, Department of Engineering, University of Liverpool, UK C. Hall, Ph.D. University Lecturer in Turbomachinery, University of Cambridge, UK. A weight W is suspended from a rigid support by a hard spring with stiffness constant K. The spring is enclosed in a- hard plastic sleeve, which prevents horizontal motion, but allows vertical.

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For many fluid devices of engineering importance, however, the motion is appropriately characterized as an. disturbances Interaction of vorticity and pressure (6) disturbances Disturbance interaction caused by shock (1) waves Irrotational disturbances and upstream (2) influence in a compressible flow Summary concerning small amplitude (1) unsteady disturbances Some Features of unsteady viscous flows (10).

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CR ALFORD J,J ENG POWER, V97, P EHRICH F,J VIB ACOUST, V, P EHRICH FF,GT ASME STORACE AF,6 WORKSH ROT INST PR, P STORACE AF,GT ASME THOMAS HJ,B LAIM, V71, P NR 6 TC 0 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA THREE PARK AVE, NEW. 内容提示: Internal FlowThis book describes the analysis and behavior of internal flows encountered in propulsionsystems, fluid machinery (compressors, turbines, and pumps) and ducts (diffusers, nozzlesand combustion chambers).

The focus is on phenomena that are important in setting theperformance of a broad range of fluid authors show that even for. Some gas turbines are “bi-fuel”. They may burn a mixture of gas and liquid fuel. Simple and Combined Cycles Combustion air, with the help of swirler vanes, flows in around the fuel nozzle and mixes with the fuel.

This air is called primary air and represents approximately 25 percent of total air ingested by the : Krasimir Ivanov.

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