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Evaluation of a new wind tunnel with expanding corners
KTH, Superseded Departments, Mechanics.
KTH, Superseded Departments, Mechanics.ORCID iD: 0000-0002-2711-4687
2004 (English)In: Experiments in Fluids, ISSN 0723-4864, E-ISSN 1432-1114, Vol. 36, no 1, 197-203 p.Article in journal (Refereed) Published
Abstract [en]

A new low-speed, closed-circuit, closed-test-section wind tunnel, called BLT, has been designed and built at KTH. The turbulence intensity in the test section is <0.04%, the total pressure variation is <+/-0.1% and the temperature variation is <+/-0.07degreesC over the cross-sectional area. The concept of expanding corners with an expansion ratio of 1.32 first investigated by Lindgren et al. in 1998, has been implemented successfully with a two-dimensional total pressure loss coefficient of 0.047 at a chord Reynolds number of 200,000. It is comparable to or even better than the values found in most wind tunnels using nonexpanding corners. The findings in this study prove the usefulness of expanding corners to achieve a compact wind tunnel circuit design without compromising the flow quality.

Place, publisher, year, edition, pages
2004. Vol. 36, no 1, 197-203 p.
National Category
Applied Mechanics
Identifiers
URN: urn:nbn:se:kth:diva-43950DOI: 10.1007/s00348-003-0705-yISI: 000189001000022Scopus ID: 2-s2.0-1142305883OAI: oai:DiVA.org:kth-43950DiVA: diva2:451030
Note
QC 20111024. 11th International Symposium on Applications of Laser Techniques to Fluid Mechanics. LISBON, PORTUGAL. JUL 08-11, 2002Available from: 2011-10-24 Created: 2011-10-19 Last updated: 2017-12-08Bibliographically approved

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Johansson, Arne V.

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