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Scientific Visualization
| Issue Year: | 2015 |
| Quarter: | 4 |
| Volume: | 7 |
| Number: | 5 |
| Pages: | 1 - 11 |
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| Article Name: |
THE EVOLUTION OF THE PLASMA FORMATION IN THE GAS MEDIUM, MODELING WITH VISUALIZATION OF THE GRID NODES DYNAMICS AND THE INTERACTION OF SHOCK AND THERMAL WAVES |
| Authors: |
P.V. Breslavskiy (Russian Federation), O.N. Koroleva (Russian Federation), A.V. Mazhukin (Russian Federation) |
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Article is submitted by National Research Nuclear University MEPhI (Moscow Engineering Physics Institute) |
| Address: |
P.V. Breslavskiy
M.V. Keldysh Institute of Applied Mathematics, RAS, Moscow, Russian Federation
O.N. Koroleva
M.V. Keldysh Institute of Applied Mathematics, RAS, Moscow, Russian Federation
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russian Federation
A.V. Mazhukin
vim@modhef.ru
National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russian Federation |
| Abstract: |
The structure of the shock and thermal waves in the air in the expansion of the plasma is investigated. Simulations have shown that the characteristics of plasma formation, the occurrence of shock and heat waves are dependent on a number of influence parameters and environment properties. The nature of the interaction of thermal and hydrodynamic flow quality varies with the magnitude of the thermal conductivity of the medium. High thermal conductivity leads to thermal waves of two different types - subsonic and supersonic. The structure of the solutions of supersonic mode is represented as two consecutive waves - thermal and hydrodynamic. The subsonic structure of the solution presented in the form of three waves: the isothermal shock wave located between the two (subsonic and supersonic) thermal waves. To solve nonlinear equations of hydrodynamics with a thermal conductivity we use finite-difference approach, combined with the procedure of dynamic adaptation of the computational grid that allows us to explicitly locate the strong (shock waves) and weak (thermal wave front) discontinuities. Visualization and analysis of the results of calculations on a grid containing 30 nodes are carried out in comparison with self-similar solutions found for similar problems. The work was financially supported by the Russian science Foundation (project code 15-11-00032). |
| Language: |
English |
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