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Портал Begell Электронная Бибилиотека e-Книги Журналы Справочники и Сборники статей Коллекции
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.2017019991
pages 469-485

EFFECT OF DIMENSIONS OF SHARP SPIKED CYLINDER ON THE BUZZ PHENOMENON SUBJECTED TO HYPERSONIC FLOWS

Rajesh Ramachandran
Department of Mechanical Engineering, Amrita School of Engineering, Amrita Vishwa Vidyapeetham, Amrita University, Bengaluru, India
Sirangala Ganesh Rakesh
Department of Mechanical Engineering Amrita School of Engineering, Bengaluru Amrita Vishwa Vidyapeetham, India

Краткое описание

Transient numerical investigations were carried out by subjecting a sharp spiked forward-facing cylinder to hypersonic flow of Mach number 6.1 at zero angle of attack in order to investigate the effect of variation of frequency of buzz phenomenon (i.e., pulsation and oscillation frequencies) with change in L/D ratio of the spiked cylinder by capturing the flow unsteadiness using Ansys Fluent solver. It was concluded that the buzz frequency (for both pulsation and oscillation cases) decreases almost linearly with increase in L/D ratio, and the unsteady flow transition from pulsating flow mode to oscillatory flow mode was found to occur at an L/D ratio of 2.5 for the selected model geometry and hypersonic free-stream conditions.

Ключевые слова: buzz, pulsation, oscillation, frequency, transient, unsteady

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