A methodology for computing thermodynamic and transport properties of plasma mixtures in ETC injectors

Batteh, Jad H.; Powell, J. David; Sink, D.A.; Thornhill, L.D.

doi:10.1109/20.364656

Cited by 16 publications

(14 citation statements)

References 3 publications

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“…In this paper, the simple fixed-point iteration method [20] is employed to solve the iteration equation as (15). The procedure is as follows:…”

Section: Methods Of Solving the Saha Equation Individuallymentioning

confidence: 99%

“…Apparently, determining the composition of plasma by solving the Saha equation actually means determining by solving (1). The function of is given by [12,15,18] …”

Section: The Saha Equationmentioning

confidence: 99%

“…The above equations are used to illustrate the method of solving the Saha equation in this paper. For more details about the Saha equations, one can find them in [4,12,15].…”

Section: The Saha Equationmentioning

confidence: 99%

“…However, couples of partial differential terms would also be introduced into the model which would cause extra computation amount for calculating these terms. In other works [4,9,15], the Saha equation was directly solved with the specific energy equation together in the simulation. In this paper, this direct ideal is retained.…”

Section: Advances In Mathematical Physicsmentioning

confidence: 99%

“…In the simulation research of capillary discharge for the ET or ETC launch technology, a widely used form of the Saha equation is given by [15] …”

Section: The Saha Equationmentioning

confidence: 99%

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A Study on the Efficient Method for the Solution of the Saha Equation in the Numerical Simulation of Capillary Discharge

Liu

Wan

et al. 2017

Advances in Mathematical Physics

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In the numerical simulation of capillary discharge for the Electrothermal (ET) or ET-chemical (ETC) launch system, one needs to solve the Saha equation to determine the composition of plasma for the transport coefficients. This would cause a relatively longer simulation runtime compared with conventional computational fluid dynamics problems. In this paper, the relatively difficult multidimensional problem of solving the Saha equation is transformed into a one-dimensional problem in the simulation of capillary discharge by constructing an iteration equation about temperature. A coefficient is introduced to ensure the convergence of this iteration equation. In order to improve the computational efficiency, this coefficient is further optimized and the methods of setting the iteration initial value dynamically are introduced. Several simulation tests are conducted to study the performance of these two methods. The results show that the simulation runtime could be significantly reduced with the methods presented in this paper.

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“…In this paper, the simple fixed-point iteration method [20] is employed to solve the iteration equation as (15). The procedure is as follows:…”

Section: Methods Of Solving the Saha Equation Individuallymentioning

confidence: 99%

“…Apparently, determining the composition of plasma by solving the Saha equation actually means determining by solving (1). The function of is given by [12,15,18] …”

Section: The Saha Equationmentioning

confidence: 99%

“…The above equations are used to illustrate the method of solving the Saha equation in this paper. For more details about the Saha equations, one can find them in [4,12,15].…”

Section: The Saha Equationmentioning

confidence: 99%

Section: Advances In Mathematical Physicsmentioning

confidence: 99%

“…In the simulation research of capillary discharge for the ET or ETC launch technology, a widely used form of the Saha equation is given by [15] …”

Section: The Saha Equationmentioning

confidence: 99%

See 3 more Smart Citations

A Study on the Efficient Method for the Solution of the Saha Equation in the Numerical Simulation of Capillary Discharge

Liu

Wan

et al. 2017

Advances in Mathematical Physics

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Electrothermal Launchers

Bourham¹,

Gilligan²

1999

Wiley Encyclopedia of Electrical and Electronics Engineering

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Transient Flowfield Characteristics of Polycarbonate Plasma Discharge from Pulse-powered Electrothermal Gun Operation

Kim

2008

J Therm Spray Tech

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An electrothermal gun is the device that produces high-temperature and high-velocity plasma vapor using high current pulsed power and has a potential to be an efficient method for producing a variety of nanomaterials. Pulsed plasma discharge from the electrothermal gun into the open air has been investigated numerically, and the time-dependent inviscid gas dynamics equations are solved for the two-dimensional computational domain including electrothermal gun and the open-air space using fluxcorrected transport (FCT) scheme. The modeling of the Joule heating and the mass ablation from the bore wall are incorporated in the computation. The computational results yield the details of the plasma discharge behavior inside and outside the capillary bore including choked condition at the bore exit and complex shock structure of external plasma discharge. The flow structure of freely expanding plasma discharge in the open air is essentially the highly underexpanded supersonic jet featuring Mach disk, barrel shock, contact surface, and spherical blast wave. Compared to the experiments, the numerical simulation agrees well with the experimental data such as the capillary mass ablation and shock structure of the plasma jet.

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A methodology for computing thermodynamic and transport properties of plasma mixtures in ETC injectors

Cited by 16 publications

References 3 publications

A Study on the Efficient Method for the Solution of the Saha Equation in the Numerical Simulation of Capillary Discharge

A Study on the Efficient Method for the Solution of the Saha Equation in the Numerical Simulation of Capillary Discharge

Electrothermal Launchers

Transient Flowfield Characteristics of Polycarbonate Plasma Discharge from Pulse-powered Electrothermal Gun Operation

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