Computational study of three-dimensional gaseous detonation structures

Deledicque, Vincent; Papalexandris, Miltiadis

doi:10.1016/j.combustflame.2005.09.009

Cited by 57 publications

(39 citation statements)

References 22 publications

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“…Gradually, more transverse wave surfaces and triple lines are generated in the overdriven detonation because of the essential instability, as shown from In the previous 3D detonation simulations in rectangular channels with simplified reaction models or detailed reaction models, the results show different models of detonation fronts: a rectangular mode, a diagonal mode and even a spinning mode [41,43,45,46,77] . However, for the simulation here, none of these detonation modes is observed.…”

Section: Detonation Propagationmentioning

confidence: 97%

“…While there are undoubtedly similarities between 2D numerical simulations and experimental researches for detonation initiation and propagation in supersonic combustible mixtures [37] , the mechanism might be better analyzed and explained with 3D calculations. The simplified reaction models are usually utilized in 3D simulations of detonation combustion [40][41][42][43][44][45][46][47] . However, some fine features which normally characterized by chain-branching reaction processes cannot be resolved through these simplified models.…”

Section: Introductionmentioning

confidence: 99%

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Adaptive mesh refinement based simulations of three-dimensional detonation combustion in supersonic combustible mixtures with a detailed reaction model

Cai

Liang

Deiterding

et al. 2016

International Journal of Hydrogen Energy

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Although the overdrive degree of the 3D detonation is smaller than that of the 2D case, more complex and irregular detonation fronts can be observed in the 3D case compared with the 2D detonation, which is likely because of the propagation of transverse waves and collisions of triple lines in multi-directions in 3D detonations. After the hot jet is shut down, the newly formed 2D Chapman-Jouguet (CJ) detonation has almost the same characteristic parameters with the corresponding 3D case, indicating that the 2D instabilities can be perfectly preserved in 3D simulations. However, the slapping wave reflections on the side walls in the 3D detonation result in the second oscillation along with the main one, which presents stronger instabilities compared with the 2D case. The inherent stronger 3D instabilities is also verified through the quantitative comparison between the 2D and 3D cases where the 3D result always shows stronger fluctuations than the 2D case.

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Section: Detonation Propagationmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Adaptive mesh refinement based simulations of three-dimensional detonation combustion in supersonic combustible mixtures with a detailed reaction model

Cai

Liang

Deiterding

et al. 2016

International Journal of Hydrogen Energy

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show abstract

“…Furthermore, in the rectangular tubes, at least two different types of structures, rectangular and diagonal, can be observed [5]. Recently, Vincent Deledicque et al [6] reproduced these two structures and obtained * To whom any correspondence should be addressed. clear cellular structures using a parallelized, unsplit shock-capturing algorithm.…”

Section: Introductionmentioning

confidence: 97%

Numerical simulation of three-dimensional gas detonation

Wang

Lü

2008

J. Phys.: Conf. Ser.

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“…We have implemented a Riemann solver based on the one of Colella & Glaz (1985), which is able to treat a general equation of state like an astrophysical one (Fryxell et al 1989). The parallelization, deemed necessary in order to handle the computational requirements for the problem in hand, is based on the "mpi" library, as described in Deledicque & Papalexandris (2006).…”

Section: Methodsmentioning

confidence: 99%

Hydrodynamical simulation of detonations in superbursts

Noël¹,

Busegnies²,

Papalexandris

et al. 2007

A&A

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Aims. This work presents a new hydrodynamical algorithm to study astrophysical detonations. A prime motivation of this development is the description of a carbon detonation in conditions relevant to superbursts, which are thought to result from the propagation of a detonation front around the surface of a neutron star in the carbon layer underlying the atmosphere. Methods. The algorithm we have developed is a finite-volume method inspired by the original MUSCL scheme of van Leer (1979). The algorithm is of second-order in the smooth part of the flow and avoids dimensional splitting. It is applied to some test cases, and the time-dependent results are compared to the corresponding steady state solution. Results. Our algorithm proves to be robust to test cases, and is considered to be reliably applicable to astrophysical detonations. The preliminary one-dimensional calculations we have performed demonstrate that the carbon detonation at the surface of a neutron star is a multiscale phenomenon. The length scale of liberation of energy is 10 6 times smaller than the total reaction length. We show that a multi-resolution approach can be used to solve all the reaction lengths. This result will be very useful in future multi-dimensional simulations. We present also thermodynamical and composition profiles after the passage of a detonation in a pure carbon or mixed carbon-iron layer, in thermodynamical conditions relevant to superbursts in pure helium accretor systems.

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Computational study of three-dimensional gaseous detonation structures

Cited by 57 publications

References 22 publications

Adaptive mesh refinement based simulations of three-dimensional detonation combustion in supersonic combustible mixtures with a detailed reaction model

Adaptive mesh refinement based simulations of three-dimensional detonation combustion in supersonic combustible mixtures with a detailed reaction model

Numerical simulation of three-dimensional gas detonation

Hydrodynamical simulation of detonations in superbursts

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