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U. Müller, MIchael Dues, Henri Baumann

Completely Detection of Disturbed and Undisturbed Flow Conditions in Pipes with Laser Doppler Velocimetry

Keywords: flow conditions in pipes, laser Doppler velocimetry, test benches for calibration, flow sensors, installations effects

Velocity distributions of pipe flows acquired in cross sections by Laser Doppler Velocimetry (LDV) are presented. The mostly automated measuring system consists of a so called “window chamber” allowing an extensive optical access with minimum flow disturbance and a three-dimensional iterative beam calculation. Primary and secondary flow structures are presented for disturbed and undisturbed flow conditions. The measurements are part of investigations for the optimization of volume flow calibration test facilities. The minimization of the influence of installation effects on flow meters is as well part of the project.

tm – Technisches Messen, Oldenbourg Wissenschaftsverlag

Print ISSN: 0171-8096
Volume: 74, 06/2007
Pages: 342 - 352

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