Reverse flow in a circular duct with an obstruction at the entry
作者： C.H. Sohn , Y.Z. Zhang , B.H.L. Gowda
DOI: 10.1016/J.FLOWMEASINST.2007.07.002
关键词: Vortex Formation 、 Duct (flow) 、 Forward flow 、 Mechanics 、 Physics
摘要: Abstract In this paper the reverse flow in a duct (diameter D ) with an obstruction at front (which is disc), investigated using PIV. The gap g between and entry to systematically varied it found that maximum occurs / value of 0.5. stagnant around 1.25 forward for values 1.5 above. vortex formation length behind disc smaller than plate variation magnitude axisymmetrical circular two-dimensional channel differs considerably. phenomena can be explained by low pressure obstruction.
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