Journal ArticleDOI
Three-dimensional flames supported by heterogeneous propellants
Thomas L. Jackson,John Buckmaster,J. Hoeflinger +2 more
- Vol. 28, Iss: 1, pp 895-902
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In this article, the authors examined a surface which mimics that of a heterogeneous propellant and through which passes distributed fluxes of oxidizer and fuel, and calculated the three-dimensional flames supported by these fluxes using a simple model.Abstract:
We examine a surface which mimics that of a heterogeneous propellant and through which passes distributed fluxes of oxidizer and fuel. The three-dimensional flames supported by these fluxes we calculated using a simple model. An elementary propellant packing model defines a variety of flux distributions according to the level of the slice through the propellant which defines the surface, and the effect of the different distributions on the combustion field and on the heat flux to the surface is discussed. An important geometric effect is identified. The more likely that arbitrary surface area fractions contain both ammonium perchlorate (AI) and binder fluxes, the greater will be the total heat flux to the surface from the AP/binder flames. The likelihood, and therefore the heat flux, is maximized for fuel-rich slices. This work is part of an ongoing study whose goal is a sophisticated numerical model of three-dimensional heterogeneous propellant burning.read more
Citations
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Journal ArticleDOI
Random Packs and Their Use in Modeling Heterogeneous Solid Propellant Combustion
TL;DR: In this article, some preliminary calculations of the two-dimensional combustion field supported by a disk pack are presented, in which full coupling between the gas phase, the condensed phase, and the retreating nonplanar propellant surface is accounted for.
Journal ArticleDOI
Nonsteady burning of periodic sandwich propellants with complete coupling between the solid and gas phases
TL;DR: In this paper, the authors developed a mathematical model that describes the unsteady burning of a heterogeneous propellant by simultaneously solving the combustion field in the gas-phase and the thermal field in a solid-phase, with appropriate jump conditions across the gas/solid interface.
Journal ArticleDOI
On the combustion of heterogeneous AP/HTPB composite propellants: A review
Claresta Dennis,Brian Bojko +1 more
TL;DR: In this paper, the authors review the critical physical processes of ammonium perchlorate (AP) propellant combustion and explore the different experimental and computational avenues used to shed light on such a complex phenomenon.
Journal ArticleDOI
Modeling of Heterogeneous Propellant Combustion: A Survey
TL;DR: In this paper, the authors provide a detailed discussion of relevant work on the multidimensional computational simulation of heterogeneous solid propellant combustion, focusing on composite solid propellants and plastic-bonded explosives.
Journal ArticleDOI
Producing scalable performance with OpenMP: experiments with two CFD applications
TL;DR: OpenMP is a relatively new programming paradigm, which can easily deliver good parallel performance for small numbers for both large and small numbers of processors.
References
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Journal ArticleDOI
A Non-oscillatory Eulerian Approach to Interfaces in Multimaterial Flows (the Ghost Fluid Method)
TL;DR: A new numerical method for treating interfaces in Eulerian schemes that maintains a Heaviside profile of the density with no numerical smearing along the lines of earlier work and most Lagrangian schemes is proposed.
Journal ArticleDOI
Nonpremixed Periodic Flames Supported by Heterogeneous Propellants
TL;DR: In this article, the complex combustion that is generated by burning a heterogeneous solid propellant of the kind used in high-performance rockets is studied, and two important parameters are the Peclet number Pe and the solid phase stoichiometric co-efficient.