Book ChapterDOI
Numerical Simulation of Vortex Shedding from a Cylindrical Bluff-Body Flame Stabilizer
Sombuddha Bagchi,Sourav Sarkar,Uddalok Sen,Achintya Mukhopadhyay,Swarnendu Sen +4 more
- pp 671-712
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TLDR
In this paper, an unstructured grid finite volume method was used and simulations were carried out to simulate a two-dimensional laminar transient flow past a cylindrical bluff body.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.read more
Citations
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On the dynamics of flame-edges in diffusion-flame/vortex interactions
TL;DR: In this article, the authors analyze the local flame extinction and reignition of a counterflow diffusion flame perturbed by a laminar vortex ring, and the temporal evolution of the mixing layer is determined using the classical mixture fraction approach, with both unsteady and curvature effects taken into account.
Book ChapterDOI
Dynamics of Non-reacting and Reacting Flows Past Bluff Bodies
TL;DR: In this paper, the authors present a brief review of the recent developments on flow past a bluff body in both non-reacting and reacting flow situations, and highlight the distinctive dynamics of flow past the bluff body when another fluid is injected from the body itself.
Diffusion Flame Stabilization at the Leading Edge of a Fuel Plate. Final Report. Volume 1.
TL;DR: In this paper, a theoretical model of a laminar diffusion flame at the leading edge of a fuel plate in a forced convective flow is presented and solved numerically to study the flame stabilization and blowoff phenomena.
References
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