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http://dx.doi.org/10.3795/KSME-B.2005.29.5.561

SPIV Flow Analysis of Turbulent Jet with Triangular Multi-Tabs  

Jang Young Gil (포항공과대학교 대학원 기계공학과)
Lee Sang Joon (포항공과대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.29, no.5, 2005 , pp. 561-567 More about this Journal
Abstract
The effect of triangular multi-tabs attached at the perimeter of jet nozzle on flow structure in the near field was investigated experimentally. A stereoscopic PIV(SPIV) system was employed to measure three orthogonal velocity components of the 3-D turbulent jet. In this study, two different types of sharp-edged jet nozzle having 4, 8 tabs were tested at the Reynolds number of Re=10,000. SPIV measurements were carried out at 5 cross-sectional planes. Six hundred instantaneous velocity fields were measured for each experimental condition and they were ensemble averaged to get spatial distributions of turbulent statistics such as mean velocity and turbulence intensity. Entrainment rate of surrounding fluid into the tabbed jets was estimated using the measured 3-D velocity field data. The strong vortex structure was induced for the jet flow with 4 tabs, increasing entrainment rate.
Keywords
Stereoscopic PIV; Jet; Flow Control; Tab;
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Times Cited By KSCI : 1  (Citation Analysis)
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