Vortex dynamics of a trapezoidal bluff body placed inside a circular pipe
作者： A. Venugopal , Amit Agrawal , S. V. Prabhu
DOI: 10.1080/14685248.2017.1377345
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摘要: ABSTRACTThe influence of Reynolds number and blockage ratio on the vortex dynamics a trapezoidal bluff body placed inside circular pipe is studied experimentally numerically. Low aspect ratio, high curved end conditions (junction body), axisymmetric upstream flow with shear turbulence are some intrinsic features this class flows which have been scarcely addressed in literature. A large range (200:200,000) (ReD) covered study, encompassing all three regimes (laminar, transition turbulent). Four different defined based distinct Strouhal (St)–ReD relation: steady, laminar irregular, turbulent. The wake steady regime stationary no oscillations layer. termed as irregular owing to shedding. shedding observed be symmetric. emergence ...
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Panagiotis Tsoutsanis, Ioannis W. Kokkinakis, László Könözsy, Dimitris Drikakis, Robin J.R. Williams, David L. Youngs, Comparison of structured- and unstructured-grid, compressible and incompressible methods using the vortex pairing problem Computer Methods in Applied Mechanics and Engineering. ,vol. 293, pp. 207- 231 ,(2015) , 10.1016/J.CMA.2015.04.010
A. Venugopal, Amit Agrawal, S.V. Prabhu, Frequency detection in vortex flowmeter for low Reynolds number using piezoelectric sensor and installation effects Sensors and Actuators A-physical. ,vol. 184, pp. 78- 85 ,(2012) , 10.1016/J.SNA.2012.07.004
Jinhee Jeong, Fazle Hussain, On the identification of a vortex Journal of Fluid Mechanics. ,vol. 285, pp. 69- 94 ,(1995) , 10.1017/S0022112095000462
F. Rehimi, F. Aloui, S. Ben Nasrallah, L. Doubliez, J. Legrand, Experimental investigation of a confined flow downstream of a circular cylinder centred between two parallel walls Journal of Fluids and Structures. ,vol. 24, pp. 855- 882 ,(2008) , 10.1016/J.JFLUIDSTRUCTS.2007.12.011
Andrew Mosedale, Dimitris Drikakis, Assessment of Very High Order of Accuracy in Implicit LES models Journal of Fluids Engineering. ,vol. 129, pp. 1497- 1503 ,(2007) , 10.1115/1.2801374
J. H. Gerrard, The mechanics of the formation region of vortices behind bluff bodies Journal of Fluid Mechanics. ,vol. 25, pp. 401- 413 ,(1966) , 10.1017/S0022112066001721
Jiegang Peng, Xin Fu, Ying Chen, Flow measurement by a new type vortex flowmeter of dual triangulate bluff body Sensors and Actuators A-physical. ,vol. 115, pp. 53- 59 ,(2004) , 10.1016/J.SNA.2004.03.020
A. Venugopal, Amit Agrawal, S.V. Prabhu, Performance evaluation of piezoelectric and differential pressure sensor for vortex flowmeters Measurement. ,vol. 50, pp. 10- 18 ,(2014) , 10.1016/J.MEASUREMENT.2013.12.018
A. Venugopal, Amit Agrawal, S.V. Prabhu, Influence of blockage and shape of a bluff body on the performance of vortex flowmeter with wall pressure measurement Measurement. ,vol. 44, pp. 954- 964 ,(2011) , 10.1016/J.MEASUREMENT.2011.02.015
Srikanth T., Harish N. Dixit, Rao Tatavarti, Rama Govindarajan, Vortex shedding patterns, their competition, and chaos in flow past inline oscillating rectangular cylinders Physics of Fluids. ,vol. 23, pp. 073603- ,(2011) , 10.1063/1.3610389