Article
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Design and Characterizing of Blower Wind Tunnel Using CFD
Version 1
: Received: 12 August 2022 / Approved: 19 August 2022 / Online: 19 August 2022 (08:31:04 CEST)
How to cite: Azzawi, I. Design and Characterizing of Blower Wind Tunnel Using CFD. Preprints 2022, 2022080361. https://doi.org/10.20944/preprints202208.0361.v1 Azzawi, I. Design and Characterizing of Blower Wind Tunnel Using CFD. Preprints 2022, 2022080361. https://doi.org/10.20944/preprints202208.0361.v1
Abstract
new subsonic blower wind tunnel design has been studied both numerically and experimentally, it is also referred to as “blower” wind tunnel. This paper, is initially aimed to address each sequential stage of the wind tunnel design process. Rather than applying the standard method of modelling solely the flow in the test section, a large-scale CFD model of the whole wind tunnel was employed. The loss of every constituent element was calculated and then all the losses are added up to determine the power needed for the wind tunnel operation which is used as “intake fan” boundary conditions in the CFD model. Then, flow uniformity and turbulent intensity measurements in an empty test section using a Pitot-static tube and hot wire anemometer (HWA) were introduced to validate the CFD results. The results showed that flow quality was significantly affected by boundary layer controllers (honeycomb and mesh screens) in the settling chamber and wide-angle diffuser. Investigations were also conducted to evaluate the flow deficit in the wake area behind a convex hump model using HWA. This was additional experimental tests carried out to validate the suitability of the wind tunnel flow aerodynamic research.
Keywords
Blower wind tunnel design; CFD; Boundary layer controller; Turbulent intensity Validation; Power spectral density (PSD)
Subject
Engineering, Mechanical Engineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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