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Analysis of base-jet exit shape on the wake axis mean velocity and velocity fluctuation behind circular cone
S. N. Harish
Published in SPB Pharma Society
Volume: 9
Issue: 2
Pages: E6 - E9
Length of the basejet stagnation point obtained from the time averaged mean velocity distribution along the wake axis of a circular cone under isothermal conditions is presented. At low subsonic speed of 25m/s (Re= 0.6666 x 105), all the experiments were executed. Air at atmospheric temperature was injected at three different base-jet injection ratios as 0.5, 1.0, and 1.5 from the base of the cone. Constant Temperature hot-wire Anemometer was used to measure velocity. Circular, square and hexagonal cross section shape base jets of size one percentage of base area (AR = 0.01) were used in the experiments. Some notable conclusions made from the experimental results are, as the basejet momentum ratio increased the jet stagnation point length also increased logarithmically. At constant momentum ratio, the effect of corner vortices generated (loss in momentum) from the square jet causes decrease in length of jet stagnation point than an equivalent area ratio circular jet. Hence a square cross section basejet mixes early with primary jet than an equivalent area circular jet at constant momentum ratio. © 2016 SPB Pharma Society. All Right Reserved.
About the journal
JournalJournal of Chemical and Pharmaceutical Sciences
PublisherSPB Pharma Society
Open AccessNo
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