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Title: Blockage Effect Of Different Types Of Anemometers I N A Closed Wind Tunnel
Author: Sabelle Care Herve Miler
Source: 2015 International Symposium on Fluid Flow Measurement
Year Published: 2015
Abstract: Airspeed measurements are of increasing relevance f or efficiency and safety related subject areas. The intrusion of an anemometer in a duct may lead to a measurement error because of the change in flow profile and blockage effect. Thi s impact has to be taken into account when performing measurements of air speed. It is therefore important to understand the phenome na, to be able to analyze and quantify them at all levels of the traceability chain, from Natio nal Metrology Institutes to on site measurements, from calibration test rigs to industrial measuremen ts in duct. The research project led in 2012 by EDF R&D and CET IAT about the comparison of experimental and numerical results for different ty pes of anemometers in a closed wind tunnel has been extended to different sizes of closed wind tunnel. The new results were obtained by numerical simulati on using a CFD code, named STAR CCM+

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