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International Journal of Fluid Mechanics Research
ESCI SJR: 0.22 SNIP: 0.446 CiteScore™: 0.5

ISSN Печать: 2152-5102
ISSN Онлайн: 2152-5110

Выпуски:
Том 46, 2019 Том 45, 2018 Том 44, 2017 Том 43, 2016 Том 42, 2015 Том 41, 2014 Том 40, 2013 Том 39, 2012 Том 38, 2011 Том 37, 2010 Том 36, 2009 Том 35, 2008 Том 34, 2007 Том 33, 2006 Том 32, 2005 Том 31, 2004 Том 30, 2003 Том 29, 2002 Том 28, 2001 Том 27, 2000 Том 26, 1999 Том 25, 1998 Том 24, 1997 Том 23, 1996 Том 22, 1995

International Journal of Fluid Mechanics Research

DOI: 10.1615/InterJFluidMechRes.2018020738
pages 509-529

ON DYNAMIC AND ENERGY TRANSFER CHARACTERISTICS OF FLOW PAST TRANSVERSELY OSCILLATING CIRCULAR CYLINDER IN THE WAKE OF STATIONARY CYLINDER

Roam Simenthy
Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai, India 600036
Vasudevan R. Raghavan
Department of Mechanical Engineering, Indian Institute of Technology Madras, Chennai, India 600036
Shaligram Tiwari
Department of Mechanical Engineering, Indian Institute of Technology Madras Chennai, India, 600036

Краткое описание

Two-dimensional numerical investigations have been carried out to study the flow and energy transfer characteristics of flow past two inline circular cylinders with a downstream cylinder subjected to forced transverse oscillations. The effect of transverse oscillations of the downstream cylinder on unsteady wake characteristics as well as exchange of mechanical energy has been investigated. The dynamic effects, wake behavior, and mechanical energy exchange between the fluid and downstream cylinder have been studied elaborately for different combinations of amplitude, frequency, and inter-cylinder spacing. The oscillation frequency of the downstream cylinder has been varied in the range from 0.4 to 2.0 times the vortex shedding frequency behind a single stationary circular cylinder. Three different values of amplitude, viz., 0.1D, 0.3D, and 0.5D (D being the diameter of either cylinder), have been considered. The spacing between the cylinders (center-to-center distance) is also varied from 2D to 5D for each combination of amplitude and frequency and for fixed value of Reynolds number (Re) equal to 100. Results are presented in the form of vorticity contours, variation of lift and drag coefficients, their signals, and spectra.


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