Dynamic generation of supercritical water fluid in a strong electrical discharge in a liquid

11th International Conference on "Mesh methods for boundary-value problems and applications"

Antonov, V.^1 ; Kalinin, N.^2 ; Kovalenko, A.^2

Department of Mathematics, Peter the Great Saint-Petersburg Polytechnic University, Polytechnicheskaja Str. 29, Saint-Petersburg, Russia^1

Joffe Physical-Technical Institution Russian Academy of Science, Polytechnicheskaja Str. 26, Saint-Petersburg, Russia^2

关键词: Bio-chemical applications;    Biology and medicine;    Electrical characteristic;    Electrical discharges;    Electrical explosion;    Supercritical water fluid;    Temperature and pressures;    Uniform distribution;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/158/1/012007/pdf
DOI  :  10.1088/1757-899X/158/1/012007

来源: IOP

【 摘 要 】

A new impetus for the development of electro physics is associated with using different types of electrical discharges in biology and medicine. These applications are based on their energetic and non-toxic factors affecting the medium on a cellular level. For the study of such processes, a mathematical model of a high-current low-temperature Z-discharge in a liquid, forming by the electrical explosion of a thin-walled metal shell, connected to a pulsed high-voltage generator, has been developed. High efficiency energy conversion, introduced into the plasma discharge to the energy of fluid motion, provides various bio chemical applications of such physical processes. The investigation is conducted through numerical solution of one-dimensional single-temperature non-stationary equations of radiation magneto hydrodynamics, one way describing the evolution of hydrodynamic, thermal and electrical characteristics of the medium throughout the area under consideration. The electrical approximation based on the assumption that the electric field in the discharge has a uniform distribution. The results are presented as a function of the electric current and the plasma channel length of time, as well as the temperature and pressure distributions at different time points along the radius of the cylindrical region in which the explosion occurs.