: Sergey T. Surzhikov
: Computational Physics of Electric Discharges in Gas Flows
: Walter de Gruyter GmbH& Co.KG
: 9783110270419
: De Gruyter Studies in Mathematical PhysicsISSN
: 1
: CHF 177.80
:
: Theoretische Physik
: English
: 439
: Wasserzeichen
: PC/MAC/eReader/Tablet
: PDF
< >Gas discharges are of interest for many processes in mechanics, manufacturing, materials science and aerophysics. To understand the physics behind the phenomena is of key importance for the effective use and development of gas discharge devices.

This worktreats methods of computational modeling of electrodischarge processes and dynamics of partially ionized gases. These methods are necessary to tackleproblems of physical mechanics, physics of gas discharges and aerophysics.Particular attention is given to a solution of two-dimensional problems of physical mechanics of glow discharges.The use ofglow discharges in aerospace technology is discussed as well.



< >Sergey T. Surzhikov, Institute for Problems in Mechanics,Russian Academy of Sciences, Moscow, Russia.

Preface5
I Elements of the theory of numerical modeling of gas-discharge phenomena13
1 Models of gas-discharge physical mechanics15
1.1 Models of homogeneous chemically equilibrium plasma17
1.1.1 Mathematical model of radio-frequency (RF) plasma generator26
1.1.2 Mathematical model of electric-arc (EA) plasma generator31
1.1.3 Models of micro-wave (MW) plasma generators34
1.1.4 Models of laser supported plasma generators (LSPG)37
1.1.5 Numerical simulation models of steady-state radiative gas dynamics of RF-, EA-, MW-, and LSW-plasma generators45
1.1.6 Method of numerical simulation of non-stationary radiative gas-dynamic processes in subsonic plasma flows. The method of unsteady dynamic variables59
1.2 Models of nonuniform chemically equilibrium and nonequilibrium plasma61
1.2.1 Model of the five-component RF plasma generator66
1.2.2 Model of the three-component RF plasma generator69
1.2.3 Two-temperature model of RF plasma under ionization equilibrium71
1.2.4 One-liquid two-temperature model of laser supported plasma73
2 Application of numerical simulation models for the investigation of laser supported waves76
2.1 Air laser supported plasma generator76
2.2 Hydrogen laser supported plasma generator86
2.3 Bifurcation of subsonic gas flows in the vicinity of localized heat release regions93
2.3.1 Statement of the problem95
2.3.2 Qualitative analysis of the phenomenon96
2.3.3 Quantitative results of numerical simulation97
2.4 Laser supported waves in the field of gravity103
3 Computational models of magnetohydrodynamic processes116
3.1 General relations117
3.2 Vector form of Navier-Stokes equations118
3.3 System of equations of magnetic induction119
3.4 Force acting on ionized gas from electric and magnetic fields123
3.5 A heat emission caused by action of electromagnetic forces124
3.6 Complete set of the MHD equations in a flux form126
3.6.1 The MHD equations in projections127
3.6.2 Completely conservative form of the MHD equations129
3.7 The flux form of MHD equations in a dimensionless form132
3.7.1 Definition of the normalizing parameters132
3.7.2 Nondimension system of the MHD equations in flux form134
3.8 The MHD equations in the flux form. The use of pressure instead of specific internal energy138
3.9 Eigenvectors and eigenvalues of Jacobian matrixes for transformation of the MHD equations from conservative to the quasilinear form. Statement of nonstationary boundary conditions141
3.9.1 Jacobian matrixes of passage from conservative to the quasilinear form of the equations141
3.10 A singularity of Jacobian matrixes for transformation of the equations formulated in the conservative form145
3.11 System of the MHD equations without singular transfer matrixes152
3.12 Eigenvalues and eigenvectors of nonsingular matrixes of quasilinear system of the MHD equations156
3.12.1 Matrix Ãx156
3.12.2 Matrix Ãy160
3.12.3 Matrix Ãz163
3.13 A method of splitting for three-dimensional (3D) MHD equations165
3.14 Application of a splitting method for nonstationary 3D MHD flow field, generated by plasma plume in the ionosphere173
II Numerical simulation models of glow discharge181
4 The physical mechanics of direct current glow discharge183
4.1 Fundamentals of the physics of direct current glow discharge. The Engel-Steenbeck theory of a cathode layer184
4.2 Drift-diffusion model of glow discharge190
4.2.1 Governing equations190
4.2.2 Reduction of governing equations to a form convenient for numerical solution193
4.2.3 Initial conditions of the boundary value problem for the glow discharge196
4.2.4 Glow discharge with heat of gas198
4.2.5 Estimation of typical time scales of the solved problem199
4.3 Finite-difference methods for the drift-diffusion model206
4.3.1 Finite-difference scheme for the Poisson equation206
4.3.2 Finite-difference scheme for the equation of charge motion209
4.3.3 Conservative properties of the finite-difference scheme for the motion equation212
4.3.4 The order of accuracy of the finite-difference approximation used. The mesh diffusion215
4.3.5 The finite-difference grids219
4.3.6 Iterative methods for solving systems of linear algebraic equations in canonical form222
4.3.7 An iterative algorithm for the solution of a self-consistent problem233
4.3.8 Characteristic properties of a solution of a two-dimensional problem about glow discharge in a nonstationary statement234
4.4 Numerical simulation of the one-dimensional glow discharge237
4.4.1 Governing equations and boundary conditions238
4.4.2 The elementary implicit finite-difference scheme240
4.5 Diffusion of charges along a current line and effective method of grid diffusion elimination in calculations of glow discharges241
4.5.1 Governing equations for the one-dimensional case242
4.5.2 Boundary conditions242
4.5.3 Numerical methods for the one-dimensional calculation case243
4.5.4 Results of 1D numerical simulation244
4.5.5 Method of fourth order accuracy for the solution of the drift-diffusion model equations247
4.6 Two-dimensional structure of glow discharge regarding neutral gas heating253
4.6.1 Statement of two-dimensional axially symmetric problem254
4.6.2 Numerical simulation results256
5 Drift-diffusion model of glow discharge in an external magnetic field273
5.1 Derivation of the equations for calculation model273
5.2 Numerical simulation results278
5.3 Glow discharge in a cross magnetic field in view of heating of neutral gas291
5.3.1 Problem formulation292
5.3.2 Constitutive thermophysic and electrophysic parameters293
5.3.3 The method of numerical integration