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http://dx.doi.org/10.5139/JKSAS.2006.34.12.067

Blockage-Correction Method for Unsteady Flows in a Closed Test-Section Wind Tunnel  

Gang, Seung-Hui (국방과학연구소)
Gwon, O-Jun (한국과학기술원)
An, Seung-Gi (국방과학연구소)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.34, no.12, 2006 , pp. 67-74 More about this Journal
Abstract
An unsteady blockage-correction method utilizing wall pressure distribution on the test section has been developed for the wall interference correction of a closed test-section subsonic wind tunnel. The pressure distribution along the test section wall was decomposed into Fourier series and a quasi-steady method based on a measured-boundary-condition method was applied to each Fourier coefficient. The unsteady correction for a complete test period was accomplished by recombining each corrected terms. The present method was validated by appling computed unsteady flows over a cylinder and an oscillating airfoil in the test sections. The corrected results by the present method agreed well with free-air condition.
Keywords
Wall Interference Correction; Unsteady Blockage Correction; Measured-Boundary-Condition Method;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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