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2019 | OriginalPaper | Chapter

32. Numerical Simulation of Vortex Shedding from a Cylindrical Bluff-Body Flame Stabilizer

Authors : Sombuddha Bagchi, Sourav Sarkar, Uddalok Sen, Achintya Mukhopadhyay, Swarnendu Sen

Published in: Advances in Materials, Mechanical and Industrial Engineering

Publisher: Springer International Publishing

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Abstract

A two-dimensional, laminar transient flow past a cylindrical bluff body, with methane injection perpendicular to the direction of the free stream flow, i.e. the cross-flow arrangement, is numerically studied. An unstructured grid finite volume method is used and simulations were carried out. The methane mass fraction and the injection velocity of methane injected from the slotted cylinder are altered simultaneously, and their effects on the combustion, flame characteristics, and fluid mechanics are investigated. The flame is anchored right in front of the cylinder and is stabilized by the wake of the bluff body. The current investigation illustrates the qualitative aspects of the vortex shedding phenomena. A particular case of injection velocity and mass fraction is studied in detail and its vortex shedding phenomena are analysed minutely. The non-reacting flow exhibits 2P mode of vortex shedding while the reacting flow exhibits the more common 2S mode. Fast Fourier transform analysis of the temporally fluctuating lift coefficient is performed for the different cases carried out in the present study.

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Title: Numerical Simulation of Vortex Shedding from a Cylindrical Bluff-Body Flame Stabilizer
Authors: Sombuddha Bagchi
Sourav Sarkar
Uddalok Sen
Achintya Mukhopadhyay
Swarnendu Sen
Publisher: Springer International Publishing
Book: Advances in Materials, Mechanical and Industrial Engineering
Print ISBN: 978-3-319-96967-1

Electronic ISBN: 978-3-319-96968-8

Copyright Year: 2019
DOI: https://doi.org/10.1007/978-3-319-96968-8_32

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