LDV Measurements of the Response of the Swirling Turbulent Flow in a Pipe to a Rapid Temporal Change in Swirl

Authors: Kocherscheidt H.; Schmidts M.; Vasanta Ram V.I.

Source: Applied Scientific Research, Volume 69, Number 1, 2002 , pp. 79-94(16)

Publisher: Springer

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Abstract:

The present paper describes an experiment to study the response of the swirling flow in a pipe at a high Reynolds number to a rapid temporal change in swirl. The measurements have been conducted with 3D-LDV in a facility of special design that operates on the principle of refractive-index matching and in which swirl is generated in the flow by a tube-bundle in the pipe rotating about its own axis. The temporal change in swirl is effected by a computer controlled change of the angular velocity of the swirl generator. Measurement data from both cases, of increase and decrease of swirl, are presented.

Keywords: 3D-LDV; temporal response; unsteady swirling flow

Language: English

Document Type: Research article

Affiliations: 1: Institut für Thermo- und Fluiddynamik, Ruhr Universität Bochum, D-44780 Bochum, Germany

Publication date: 2002-01-01

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