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Title: Aspects of the design and performance of blower tunnel components
Author: Mehta, Rabindra Dolatray
Awarding Body: University of London
Current Institution: Imperial College London
Date of Award: 1979
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A blower tunnel is an open-circuit tunnel driven by a centrifugal blower at the entry: usually the blower is a standard commercial unit, rather than a special design, with a rotor carrying aerofoil-section blades as distinct from radial vanes. This project was initiated to gain a better understanding of the performance of blower tunnel components and so make their design more scientific, logical and successful. The design and performance of the blower, diffuser and screens are discussed in detail because of the strong influence of these components on tunnel performance. Some of the material has been presented in a review article (Mehta, 1977): this thesis contains extra original work and some of the discussion is superseded by the present one. Design rules for wide-angle diffusers are presented, based mainly on correlations of data collected from existing designs. For a diffuser using gauze screens for boundary layer control, the important parameters are found to be the diffuser angle, area ratio, number of screens and the overall pressure drop coefficient of the screens.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available