Measurements of turbulent flow in a suddenly expanding flume with a rough bottom

Report (1983)

Authors

L.X. Wang

Department

Hydraulic Engineering () (TU Delft)

Turbulent Mixing layer Expanding flume Rough bottom Suddenly expanding Seperating flow Turbulence quentities

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Published Date

01-01-1983

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Source:

Report no. 2-83

Faculty

Civil Engineering and Geosciences

Department

Hydraulic Engineering

Abstract

Some measurements were conducted in a suddenly expanding flume with a rough bottom. In the approach flume, the friction velocity was determined in three ways and the distributions of turbulence intensities and Reynolds stress in a vertical were obtained. The measurement of the separating turbulent flow comprised the distribution of depth-averaged velocity and turbulence quentities (u', v', -uv and u^2 +v^2) in the separation region and the vertical distribution of turbulence quentities in the mixing layer. To measure instantaneous velocity components a Laser Doppier Velocimeter and a Data Acquisition System were employed. The data were processed using a digital filter.

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