Journal
VIBRATION, STRUCTURAL ENGINEERING AND MEASUREMENT I, PTS 1-3
Volume 105-107, Issue -, Pages 139-142Publisher
TRANS TECH PUBLICATIONS LTD
DOI: 10.4028/www.scientific.net/AMM.105-107.139
Keywords
Tripping rods; Three dimensional; Drag force reduction
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The effects of tripping rods on characteristics and fluid forces acting on a single cylinder was three-dimensional numerical studied in a low laminal flow at a Reynolds number of 200 and a subcritical stream at a Reynolds number of 5.5X10(4). The angular position of the tripping rods was varied from 20 to 60.The results reveal that there exits an optimum position of tripping rod for reducing fluid forces. This optimum angular position was found to be 40 degrees for Re=200 and 30 degrees for Re=5.5X10(4). At this optimum angle, the steady drag, fluctuating drag and fluctuating lift forces acting on the cylinder are reduced by 21%, 32%, and 28% for Re=200 and 36%, 44%, 76% for Re=5.5X10(4).
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