Journal ArticleDOI
Parametric effect on the flow and mixing properties of transverse gaseous injection flow fields with streamwise slot: A numerical study
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In this paper, the authors used the three-dimensional Reynolds-averaged Navier-Stokes (RANS) equations coupled with the two equation SST k-ω turbulence model to simulate the mixing process induced by an array of three spanwise-aligned small-scale rectangular portholes, and the influences of the jetto-jet spacing, the jet-to-crossflow pressure ratio and the aspect ratio of the injector on the flow field properties were evaluated.About:
This article is published in International Journal of Hydrogen Energy.The article was published on 2017-01-12. It has received 50 citations till now. The article focuses on the topics: Overall pressure ratio & Reynolds-averaged Navier–Stokes equations.read more
Citations
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Supersonic mixing in airbreathing propulsion systems for hypersonic flights
TL;DR: In this article, a survey of mixing augmentation mechanisms for the design of large-scale scramjet engines at increased flight Mach number is presented, including wall injection, struts, ramps, cavities, vortex generators and new configurations.
Journal ArticleDOI
Mixing augmentation of transverse hydrogen jet by injection of micro air jets in supersonic crossflow
TL;DR: In this article, a three-dimensional numerical study has been performed to reveal the affects of micro air jet on mixing of the hydrogen jet in a Mach 4.0 crossflow with a global equivalence ratio of 0.5.
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Shape effect of cavity flameholder on mixing zone of hydrogen jet at supersonic flow
Rasoul Moradi,Ahmad-Reza Tofangchi Mahyari,M. Barzegar Gerdroodbary,Ali Abdollahi,Younes Amini +4 more
TL;DR: In this article, the authors applied computational fluid dynamic to study the influence of the various shapes of cavity as flameholder on the mixing efficiency inside the scramjet to evaluate different shape of cavity flame holder, the Reynolds-averaged Navier-Stokes equations with (SST) turbulence model is solved to reveal the effect of significant parameters.
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Mixing enhancement strategies and their mechanisms in supersonic flows: A brief review
TL;DR: In this article, a survey of mixing enhancement strategies based on the traditional transverse injection technique, as well as their mixing augmentation mechanisms, were reviewed in detail, namely the pulsed transverse injector, the traditional Transverse injection coupled with the vortex generator, and the dual transversal injection system with a front porthole and a rear airporthole arranged in tandem.
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Effect of dual micro fuel jets on mixing performance of hydrogen in cavity flameholder at supersonic flow
TL;DR: In this paper, numerical simulations were done to study the influence of the various hydrogen injections on the mixing rate in the cavity flameholder of the scramjet, and the effect of significant parameters was studied by using the Reynolds-averaged Navier-Stokes equations with Menter's Shear Stress Transport (SST) turbulence model.
References
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Journal ArticleDOI
The Interaction of Jets with Crossflow
TL;DR: In this article, a review of the physical behavior of this important class of flow in the incompressible and compressible regimes is presented, and a general consensus on the qualitative structure of the flow at low velocity ratios (jet speed/crossflow speed) is established.
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Transverse jets and their control
TL;DR: The transverse jet has been studied extensively because of its relevance to a wide variety of flows in technological systems, including fuel or dilution air injection in gas turbine engines, thrust vector control for high speed airbreathing and rocket vehicles, and exhaust plumes from power plants as discussed by the authors.
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Influences of the turbulence model and the slot width on the transverse slot injection flow field in supersonic flows
TL;DR: In this article, the effect of the turbulence model and slot width on the transverse slot injection flow field has been investigated numerically based on the grid independency analysis, and the predicted results have been compared with the experimental data available in the open literature.
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Historical Survey on Enhanced Mixing in Scramjet Engines
TL;DR: In this paper, the authors reviewed several methods used by the scramjet community to enhance mixing of fuel with oxidizer to achieve high combustion efe ciency with reduced length combustors.
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Transverse jet in supersonic crossflows
TL;DR: In this article, the transverse jet in supersonic crossflows has been summarized systematically from four aspects, namely single injection, multiport injection, interaction between jet and vortex generator, and interaction between the jet and shock wave.