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Chapter
Introduction
The researches on scramjet have lasted for decades and many important methods have been reviewed [1]. However, there are still many challenges in develo** the scramjet, and one of the most crucial issues is to ...
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Chapter
Flow Dominating Instability in Supersonic Flows
The shock-induced separation is a common phenomenon in supersonic combustion, especially when the scramjet combustor works under high equivalence ratios. The low-speed recirculation zone and strong heat releas...
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Chapter
Flame Flashback in Supersonic Flows
Non-stationary flame propagation against the incoming supersonic flow in scramjet engines has been in focus of numerous experimental and computational studies. In this chapter, we give the research work of the...
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Chapter
Acoustic Oscillation in Supersonic Combustor
In the supersonic combustors, there exist intense exothermic reactions between fuel and oxidizer. In many cases the combustor does not work as expected, where the pressure oscillations occur, especially for th...
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Chapter
Cavity Ignition in Supersonic Flows
Scramjets are promising propulsion systems for hypersonic flight vehicles. Development of scramjets relies on sufficient understanding of the complex mixing, ignition and combustion processes inside a scramjet...
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Chapter
Flame Behaviors Near Blowoff in Supersonic Flows
Blowoff limits, including rich blowoff limit (RBO) and lean blowoff limit (LBO), are the boundaries between stable combustion and flame blowoff. The blowoff limits usually depend on the conditions of inflow, f...
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Article
Numerical study on cavity ignition process in a supersonic combustor
Large eddy simulations (LESs) of cavity ignition processes were performed in a 2D ethylene-fueled supersonic combustor with a single rear-wall-expansion cavity based on OpenFOAM. The ethylene combustion was mo...
