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Measurement and calculation of guide vane performance in expanding bends for wind-tunnels
KTH, Superseded Departments, Mechanics.
KTH, Superseded Departments, Mechanics.
KTH, Superseded Departments, Mechanics.ORCID iD: 0000-0002-2711-4687
1998 (English)In: Experiments in Fluids, ISSN 0723-4864, E-ISSN 1432-1114, Vol. 24, 265-272 p.Article in journal (Refereed) Published
Abstract [en]

The design of guide vanes for use in expanding bends was investigated both experimentally and numerically. The primary application in mind is the use of expanding corners in wind-tunnels for the purpose of constructing compact circuits with low losses. To investigate the performance of guide vanes in realistic situations expansion ratios between 1 and 3 were tested in the experiments. These were carried out in an open wind-tunnel specially built for the present purpose. The experimental results demonstrated that suitably designed guide vanes give very low losses and retained flow quality even for quite substantial expansion ratios. For wind-tunnel applications expansion ratios around 1.3 seem appropriate, Optimization of a guide vane design was done using a two-dimensional cascade code, Mises. A new vane optimized for an expansion ratio of 4/3 gave a two-dimensional total pressure-loss coefficient as low as 0.041 for a chord Reynolds number of 200,000.

Place, publisher, year, edition, pages
Springer, 1998. Vol. 24, 265-272 p.
National Category
Fluid Mechanics and Acoustics
Research subject
Engineering Mechanics
Identifiers
URN: urn:nbn:se:kth:diva-157751DOI: 10.1007/s003480050173ISI: 000073019800009Scopus ID: 2-s2.0-1142309872OAI: oai:DiVA.org:kth-157751DiVA: diva2:771564
Note

QC 20150113

Available from: 2014-12-14 Created: 2014-12-14 Last updated: 2017-12-05Bibliographically approved

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Johansson, Arne, V.

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