An algorithm for calculating two-dimensional problems of gas dynamics in Lagrangian variables

Четверушкин, Б. Н.; Шильников, Е. В.

doi:10.1016/0041-5553(85)90106-5

Cited by 4 publications

(6 citation statements)

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“…where • W-derivative of the W function [32,33] An adapted computational grid and a curved coordinate system (ξ, η) were created based on the methodology described in [34,35]. The diffusion approximation of the radiation transfer equation was solved in the work using a modification of the alternately triangular method with conjugate gradients [36].…”

Section: Model Of the Mpc Discharge And Numerical Solution Methodsmentioning

confidence: 99%

Simulation of Parameters of Plasma Dynamics of a Magneto Plasma Compressor

2023

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The main purpose of this article is to study the features of the structure and spectral brightness characteristics of pulsed emitting discharges of the magneto plasma compressor type in dense gases over a wide range of energy–power parameters. A numerical simulation of plasma dynamic magneto plasma compressor discharge in gases is carried out. Different quasi-stationary regimes have been studied and the main characteristics have been estimated.

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Section: Model Of the Mpc Discharge And Numerical Solution Methodsmentioning

confidence: 99%

Simulation of Parameters of Plasma Dynamics of a Magneto Plasma Compressor

2023

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“…As previously mentioned, according to the experimental data of Yi Zhang et al [10], the representative temperature for the aluminium keyhole plasma is about 15 000 K. It is known [21] that the radiation loss begins to influence essentially the gasdynamic processes at a temperature of about 10 000 K. Under such conditions, it is impossible to determine the gas-flow parameters with no regard to the radiation fields. Thus, it is assumed to consider jointly the equations of metallic vapour or plasma moving in the keyhole and radiation transport equation.…”

Section: Mathematical Modelmentioning

confidence: 99%

“…To describe the radiation loss, let us use the radiative transfer equation to the diffusion multi-group approximation [21]:…”

Section: Radiation Loss and Plasma Absorption Of Radiationmentioning

confidence: 99%

Simulation of plasma dynamics in a keyhole during laser welding of metal with deep penetration

Bedenko

Ковалев

Krivtsun

2010

J. Phys. D: Appl. Phys.

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Physical processes occurring in the keyhole during the deep-penetration laser welding of aluminium, where evaporation, ionization and formation of near-surface low-temperature plasma can take place, are studied theoretically. Equations of radiation gas dynamics including the equilibrium model of plasma, description of laser radiation transport and absorption are solved. Numerical calculations of plasma cloud propagation processes in aluminium vapour are performed in a one-dimensional approach. The minimum radiation power necessary to maintain this cloud is found. The effect of radiation trapping by plasma due to self-absorption in the optically thick plasma layer is revealed. The simulation results are of interest for a qualitative understanding of the processes in the keyhole plasma.

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“…Inasmuch as the transfer in resonance lines is considered, the requirement of a large optical thickness is fulfilled. Boundary conditions to equations ( 21) and ( 22) are formulated assuming the absence of external radiation, and for the considered cylindrical volume they have the following form [50]:…”

Section: Considering Plasma Volumes Of Large Optical Thicknessmentioning

confidence: 99%

Self-consistent modelling of a microwave discharge in neon and argon at atmospheric pressure

Rolin

Shabunya

Rostaing

et al. 2007

Plasma Sources Sci. Technol.

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A self-consistent model describing a microwave discharge with radial energy input is proposed to simulate electromagnetic field, radiative transfer, photoionization processes, plasma chemical reactions, heat transfer and hydrodynamics. The model is implemented for the case of discharges in neon and argon; the relevant kinetic data for these gases are collected and supplemented. Self-consistent simulation has shown that the electromagnetic field and the plasma configuration do not correspond to the widely used surface-wave approach.

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An algorithm for calculating two-dimensional problems of gas dynamics in Lagrangian variables

Cited by 4 publications

References 0 publications

Simulation of Parameters of Plasma Dynamics of a Magneto Plasma Compressor

Simulation of Parameters of Plasma Dynamics of a Magneto Plasma Compressor

Simulation of plasma dynamics in a keyhole during laser welding of metal with deep penetration

Self-consistent modelling of a microwave discharge in neon and argon at atmospheric pressure

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