Journal ArticleDOI
Enhanced vortex stability in trapped vortex combustor
S. Vengadesan,C. Sony +1 more
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In this paper, a numerical investigation of cold flow through the two-cavity trapped vortex combustor is performed, where passive flow is assumed to be achieved by circulation and the vortex is trapped inside when a second afterbody is added.Abstract:
The Trapped Vortex Combustor (TVC) is a new design concept in which cavities are designed to trap a vortex flow structure established through the use of driver air jets located along the cavity walls. TVC offers many advantages when compared to conventional swirl-stabilised combustors. In the present work, numerical investigation of cold flow (non-reacting) through the two-cavity trapped vortex combustor is performed. The numerical simulation involves passive flow through the two-cavity TVC to obtain an optimum cavity size to trap stable vortices inside the second cavity and to observe the characteristics of the two cavity TVC. From the flow attributes, it is inferred that vortex stability is achieved by circulation and the vortex is trapped inside when a second afterbody is added.read more
Citations
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Combustion and emissions characteristics of dual-channel double-vortex combustion for gas turbine engines
TL;DR: In this paper, a single-cavity vortex combustor fueled with aviation kerosene is presented, where a double-vortex flow field structure and an evaporation tube for the fuel supply are used in the pilot zone.
Journal ArticleDOI
Structural design and performance experiment of a single vortex combustor with single-cavity and air blast atomisers
TL;DR: In this article, a new type of single-cavity vortex combustor with air blast atomisers is introduced, which demonstrates a wide range of stable combustion and low pollutant emissions and accordingly has good application prospects in the field of aeroengines.
Journal ArticleDOI
The unsteady turbulence flow of cold and combustion case in different trapped vortex combustor
TL;DR: In this paper, a new structure with guide vane and blunt body is proposed to improve combustion efficiency of trapped vortex combustor, and the results show that the setting of blunt body can increase the value and the distribution area of turbulent kinetic energy, and improve the heat and mass transfer of the combustion chamber.
Journal ArticleDOI
Characteristics study on a modified advanced vortex combustor
TL;DR: In this article, a modified advanced vortex combustor is proposed to overcome the incomplete combustion of fuel, which is characterized by a variable cross-section with a bevel and guide vanes.
Journal ArticleDOI
Numerical Study of NOx Generation in a Trapped Vortex Combustor Fuelled by Kerosene Blended with Ethanol
TL;DR: In this article, the NOx generation rate of trapped vortex combustor was studied using kerosene blended with ethanol in different mass fractions as fuel, and the results showed that the thermal NOx is the main source of NOx in the combustor, which is mainly generated at the back of the combustionor.
References
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Journal ArticleDOI
Characteristics of a Trapped-Vortex Combustor
TL;DR: In this article, the characteristics of a trapped-vortex (TV) combustor are described and the instantaneous shape of the recirculation zone of the trapped vortex is measured using a two-color PIV technique.
Journal ArticleDOI
Flow management techniques for base and afterbody drag reduction
TL;DR: In this article, the authors present a review of the developments that have taken place on the use of passive techniques or devices for axisymmetric base and net afterbody drag reduction in the absence of jet flow at the base.
Journal ArticleDOI
Cold flow analysis of trapped vortex combustor using two equation turbulence models
P. Selvaganesh,S. Vengadesan +1 more
TL;DR: In this article, numerical investigation of cold flow (non-reacting) through trapped vortex combustor is performed, which involves passive flow through TVC to obtain an optimum cavity size to trap stable vortices inside the cavity and to observe the important characteristics of TVC.