Journal ArticleDOI
Large-Eddy Simulation of High-Frequency Combustion Instability in a Single-Element Atmospheric Combustor
TLDR
In this paper, a large-eddy simulation is performed to simulate high-frequency combustion instability in a single-element atmospheric combustor, and the coupling mechanism between the flame and acoustic mode is explored based on the largeeddy simulation results.Abstract:
Large-eddy simulation is performed to simulate high-frequency combustion instability in a single-element atmospheric combustor. Simulations are conducted for corresponding combustion-instability experiments, and the self-excited combustion instability is successfully captured. The first tangential mode of the combustion chamber is excited in the large-eddy simulation, and the amplitude and frequency of the pressure fluctuations are consistent with the experimental observations. The first tangential mode in the large-eddy simulation was observed at 1 kHz, and the peak-to-peak amplitude was approximately 4% of time-averaged pressure. The higher-order modes were also observed in the large-eddy simulation at frequencies ranging from 2 to 4 kHz, although those amplitudes were approximately one-fourth of the first tangential mode. The coupling mechanism between the flame and acoustic mode is explored based on the large-eddy-simulation results. The periodic ignition of the unburnt H2/O2 mixture exhibits lifted c...read more
Citations
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Journal ArticleDOI
Characterizing hydrogen-fuelled pulsating combustion on thermodynamic properties of a combustor
TL;DR: In this article, the physics of pulsating combustion supported by a hydrogen burnt flame is investigated by applying numerical simulations, and the authors explore the physics and its impact on the thermodynamic properties of a standing-wave combustor.
Journal ArticleDOI
Spatiotemporal dynamics and early detection of thermoacoustic combustion instability in a model rocket combustor
TL;DR: The turbulence network, which consists of nodes and vertexes in weighted networks between vortices, can characterize the complex spatiotemporal structure of a flow field during thermoacoustic combustion instability.
Journal ArticleDOI
Dynamic behavior of intermittent combustion oscillations in a model rocket engine combustor
TL;DR: In this paper, the dynamic behavior of intermittent combustion oscillations by time series analysis in terms of nonlinear forecasting, symbolic dynamics, and statistical complexity, including the detection of the change in dynamical state based on symbolic dynamics and graph networks.
Journal ArticleDOI
Effects of self-pulsation on combustion instability in a liquid rocket engine
TL;DR: The relationship between self-pulsation and combustion instability in a combustor burning gaseous oxygen (GOX) and liquid ethanol (LET) through a liquid-centered swirl coaxial (LCSC) injector was investigated in this article.
Journal ArticleDOI
Formation mechanism of high-frequency combustion oscillations in a model rocket engine combustor
TL;DR: In this paper, the formation mechanism of high-frequency combustion oscillations in a model rocket combustor from the viewpoint of symbolic dynamics and complex networks was studied. But the model combustor was not considered.
References
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Towards the ultimate conservative difference scheme V. A second-order sequel to Godunov's method
TL;DR: In this article, a second-order extension of the Lagrangean method is proposed to integrate the equations of ideal compressible flow, which is based on the integral conservation laws and is dissipative, so that it can be used across shocks.
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Efficient implementation of essentially non-oscillatory shock-capturing schemes,II
Chi-Wang Shu,Stanley Osher +1 more
TL;DR: Two methods of sharpening contact discontinuities-the subcell resolution idea of Harten and the artificial compression idea of Yang, which those authors originally used in the cell average framework-are applied to the current ENO schemes using numerical fluxes and TVD Runge-Kutta time discretizations.
Journal ArticleDOI
Efficient implementation of essentially non-oscillatory shock-capturing schemes, II
ShuChi-Wang,OsherStanley +1 more
TL;DR: This work extends earlier work on the efficient implementation of ENO (essentially non-oscillatory) shock-capturing schemes by providing a new simplified expression for the ENO constructio...
Book
Rocket Propulsion Elements
TL;DR: In this paper, the authors defined and defined the fundamentals of solid propellant rocket propulsion systems, including propulsion system design, propulsion system parameters, and propulsion system performance analysis, as well as propulsion system testing.