Eulerian multi-fluid models for the simulation of dynamics and coalescence of particles in solid propellant combustion

Doisneau, Francois; Laurent, Frédérique; Murrone, Angelo; Dupays, Joel; Massot, Marc

doi:10.1016/j.jcp.2012.09.025

Cited by 43 publications

(78 citation statements)

References 39 publications

(76 reference statements)

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“…Thermochemical methods have been widely used as a valuable fast tool to predict the combustion characteristics of different solid propellant compositions [32][33][34]. In this study, the effect of different potential oxidizers (KP or AP), stoichiometric oxidizer/metal fuel mixture (AP/Al), and nitramine (HMX) on the combustion characteristics of extruded DB propellants particularly the specific impulse, and the combustion temperature (T c ) were evaluated using a chemical equilibrium computer program named ICT Thermodynamic Code (Institute of Chemical Technology in Germany, virgin 2008).…”

Section: Theoretical Evaluation Of Ballistic Performancementioning

confidence: 99%

Certain Ballistic Performance and Thermal Properties Evaluation for Extruded Modified Double-base Propellants

Fahd¹,

Mostafa²,

Elbasuney³

2017

Cent. Eur. J. Energ. Mater.

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Abstract:The main advantages of modified double-base (MDB) propellants are wide range of burning rates, high energy output, as well as enhanced thrust. This study reports on the effect of potential oxidizers − potassium perchlorate (KP) or ammonium perchlorate (AP), stoichiometric binary mixture of the oxidizer (KP or AP) with metal fuel (Al), and energetic nitramine (HMX) on combustion characteristics of MDB propellants. MDB propellant formulations based on these additives, constituting 10 wt.% of total mass of the MDB formulation, were manufactured by solventless extrusion process. The impact of these additives on ballistic performance particularly the burning rate as well as on the characteristic exhaust velocity of gaseous product (C * ), was evaluated using small-scale ballistic evaluation test motor. KP and AP exhibit different effects; KP positively impacts the burning rate, AP positively impacts C * . Stoichiometric binary mixture of AP/ Al positively impacts both the burning rate and C * ; HMX substantially enhances C * . These energetic additives could alter the combustion mechanism, by thinning the induction zone, allowing the luminous flame zone to be more adjacent to the burning surface. Therefore, the combustion reaction could proceed faster. The developed MDB propellant formulations were found to be more energetic with an increase in calorific value in comparison to reference formulation (using bomb calorimeter); they exhibited similar ignition temperature by means of cook off test. DSC measurements demonstrated similar onset and maximum decomposition temperature of developed MDB propellant formulations to reference DB propellant formulation but with an increase in total heat released (J/g).

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Section: Theoretical Evaluation Of Ballistic Performancementioning

confidence: 99%

Certain Ballistic Performance and Thermal Properties Evaluation for Extruded Modified Double-base Propellants

Fahd¹,

Mostafa²,

Elbasuney³

2017

Cent. Eur. J. Energ. Mater.

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“…The propellant flow contains great amount of solid particles with different diameters, which are poly-dispersed particles. There are some references [17][18][19] for a poly-disperse EulerianEulerican approach. The references consider polydisperse modeling and the particle size distributions.…”

Section: Introductionmentioning

confidence: 99%

Research on the Muzzle Blast Flow with Gas-Particle Mixtures Based on Eulerian-Eulerian Approach

Zhuo

Yao

et al. 2015

J. mech.

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The issue on the muzzle blast flow with gas-particle mixtures was numerically investigated in this paper. The propellant gas in the cannon was assumed to be gas-particle mixtures consisting of a variety of gaseous species and particles. The model made use of the Eulerian-Eulerican approach, where the particle were modeled as a second fluid with parameters like bulk density, velocity and temperature, interacting with the gas flow. A high-resolution upwind scheme(AUSMPW+) and detailed reaction kinetics model were employed to solve the chemical non-equilibrium Euler equations for gas phase. The Euler equations for particle phase were solved by MacCormack scheme. The particle diameter and the mass fraction of particle were tested to show their effects on the development process of muzzle blast flow with gas-particle mixtures. The distribution of the main flow parameters of both gas and particle were obtained at different time intervals. The results show the evolution of the muzzle blast flow with gas-particle mixtures and demonstrate the effects of key parameter on the flow field of the gas-particle flow. This paper is a significant investigation for understanding the muzzle blast flow with gas-particle mixtures, which can provide valuable reference for the research on the muzzle blast flow.

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“…The study of multi-phase flow constituted of a disperse cloud of liquid droplets carried by a gaseous flow field, also called sprays or aerosols depending on whether they follow the gaseous flow field or have their own dynamics, is of major importance and interest in many fields such as combustion, chemical engineering [42], rocket booster propulsion [13,14] and atmospheric studies [50]. A key example involving this kind of flow is fuel injection in internal combustion engines.…”

Section: Introductionmentioning

confidence: 99%

A high order moment method simulating evaporation and advection of a polydisperse liquid spray

Kah

Laurent

Massot

et al. 2012

Journal of Computational Physics

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109

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In this paper, we tackle the modeling and numerical simulation of sprays and aerosols, that is dilute gasdroplet flows for which polydispersity description is of paramount importance. Starting from a kinetic description for point particles experiencing transport either at the carrier phase velocity for aerosols or at their own velocity for sprays as well as evaporation, we focus on an Eulerian high order moment method in size and consider a system of partial differential equations (PDEs) on a vector of successive integer size moments of order 0 to N , N > 2, over a compact size interval. There exists a stumbling block for the usual approaches using high order moment methods resolved with high order finite volume methods: the transport algorithm does not preserve the moment space. Indeed, reconstruction of moments by polynomials inside computational cells coupled to the evolution algorithm can create N -dimensional vectors which fail to be moment vectors: it is impossible to find a size distribution for which there are the moments. We thus propose a new approach as well as an algorithm which is second order in space and time with very limited numerical diffusion and allows to accurately describe the advection process and naturally preserves the moment space. The algorithm also leads to a natural coupling with a recently designed algorithm for evaporation which also preserves the moment space; thus polydispersity is accounted for in the evaporation and advection process, very accurately and at a very reasonable computational cost. These modeling and algorithmic tools are referred to as the EMSM (Eulerian Multi Size Moment) model. We show that such an approach is very competitive compared to multi-fluid approaches, where the size phase space is discretized into several sections and low order moment methods are used in each section, as well as with other existing high order moment methods. An accuracy study assesses the order of the method as well as the low level of numerical diffusion on structured meshes. Whereas the extension to unstructured meshes is provided, we focus in this paper on cartesian meshes and two 2D test-cases are presented: Taylor-Green vortices and turbulent free jets, where the accuracy and efficiency of the approach are assessed.

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Eulerian multi-fluid models for the simulation of dynamics and coalescence of particles in solid propellant combustion

Cited by 43 publications

References 39 publications

Certain Ballistic Performance and Thermal Properties Evaluation for Extruded Modified Double-base Propellants

Certain Ballistic Performance and Thermal Properties Evaluation for Extruded Modified Double-base Propellants

Research on the Muzzle Blast Flow with Gas-Particle Mixtures Based on Eulerian-Eulerian Approach

A high order moment method simulating evaporation and advection of a polydisperse liquid spray

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