scholarly journals Numerical Simulation and Active Protection of Lightning Discharge Based on Quantum Heuristic Evolutionary Algorithm

2021 ◽  
Author(s):  
Mingfa Wu ◽  
Yufeng Qian ◽  
Chongjing Yang
Keyword(s):  
Numerical Simulation ◽  
Evolutionary Algorithm ◽  
Lightning Discharge ◽  
Strong Shock ◽  
Quantum Algorithm ◽  
Destructive Effect ◽  
Protection Measures ◽  
Strong Current ◽  
Active Protection ◽  
Strong Shock Waves

Abstract Thunder is a discharge phenomenon that often occurs in nature. Due to its physical influences such as strong current, high temperature, strong shock waves, strong electromagnetic radiation, etc., it has a huge destructive effect instantly, which may bring serious threats to people's lives and property safety. This paper aims to study the lightning discharge numerical simulation and active protection based on the quantum heuristic evolutionary algorithm, and proposes to apply the lightning discharge numerical simulation to the prevention of lightning disasters. This article gives a detailed description of the quantum algorithm, the generation and harm of lightning discharge. In addition, this article conducts related experiments on lightning discharge numerical simulation and active protection. The experimental results show that targeted active protection and effective numerical simulation are important measures to prevent lightning disasters. Active lightning protection measures can reduce lightning by 30%. Losses caused by disasters.

Study of Thermo-Chemical Non-Equilibrium Phenomena behind Strong Shock Waves at Atmospheric Reentry

2011 ◽  
Vol 274 ◽  
pp. 13-22 ◽  
Author(s):  
R. Allouche ◽  
R. Haoui ◽  
J.D. Parisse ◽  
R. Renane
Keyword(s):  
Numerical Simulation ◽  
Equilibrium State ◽  
Chemical Species ◽  
Strong Shock ◽  
One Dimensional ◽  
Atmospheric Reentry ◽  
High Enthalpy ◽  
Finite Differences Method ◽  
Strong Shock Waves ◽  
Non Equilibrium

This work consists of the numerical simulation of high enthalpy flows. The numerical model is governed by Euler equations and supplemented by the equations of the chemical kinetics modeling the phenomena of the chemical air components in a non-equilibrium state. The finite differences method is used for numerical simulations, the phenomena of a hypersonic flow one-dimensional reactive, non-viscous, chemical non-equilibrium is developed taking into account the physicochemical phenomena like the vibration, the dissociation of the diatomic molecules, the ionization of molecules and the formed atoms of chemical species to higher temperatures which appear behind a strong shock detached and evolve according to time in a relaxation range until to reach the equilibrium state. We are interesting in particular on the temperature effect in ionization of the atoms and the molecules.

Ionization relaxation behind strong shock waves in gases

1970 ◽  
Vol 102 (11) ◽  
pp. 431-462 ◽  
Author(s):  
L.M. Biberman ◽  
A.Kh. Mnatsakanyan ◽  
I.T. Yakubov
Keyword(s):  
Shock Waves ◽  
Strong Shock ◽  
Strong Shock Waves

Characteristics of Two-Dimensional Radiation behind Strong Shock Waves in Air(1st Report) Total Radiation Emission.

1997 ◽  
Vol 45 (523) ◽  
pp. 453-457
Author(s):  
Toshihiro MORIOKA ◽  
Yoshiki MATSUURA ◽  
Nariaki SAKURAI ◽  
Jorge KOREEDA ◽  
Kazuo MAENO ◽  
...  
Keyword(s):  
Shock Waves ◽  
Strong Shock ◽  
Two Dimensional ◽  
Total Radiation ◽  
Radiation Emission ◽  
Strong Shock Waves

Radiation Behind the Strong Shock Waves: Experiments and Modeling

2006 ◽  
Author(s):  
Eugene Anohin ◽  
Tamara Ivanova ◽  
Nikolay Koudriavtsev ◽  
Andrei Starikovskii
Keyword(s):  
Shock Waves ◽  
Strong Shock ◽  
Strong Shock Waves

Study of shocks in a nonideal dusty gas using Maslov, Guderley, and CCW methods for shock exponents

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Swati Chauhan ◽  
Antim Chauhan ◽  
Rajan Arora
Keyword(s):  
Shock Waves ◽  
Mass Fraction ◽  
Strong Shock ◽  
Dust Particles ◽  
Excluded Volume ◽  
One Dimensional ◽  
First Order ◽  
Nonideal Gas ◽  
Spherical Shock ◽  
Strong Shock Waves

Abstract In this work, we consider the system of partial differential equations describing one-dimensional (1D) radially symmetric (i.e., cylindrical or spherical) flow of a nonideal gas with small solid dust particles. We analyze the implosion of cylindrical and spherical symmetric strong shock waves in a mixture of a nonideal gas with small solid dust particles. An evolution equation for the strong cylindrical and spherical shock waves is derived by using the Maslov technique based on the kinematics of 1D motion. The approximate value of the similarity exponent describing the behavior of strong shocks is calculated by applying a first-order truncation approximation. The obtained approximate values of similarity exponent are compared with the values of the similarity exponent obtained from Whitham’s rule and Guderley’s method. All the above computations are performed for the different values of mass fraction of dust particles, relative specific heat, and the ratio of the density of dust particle to the density of the mixture and van der Waals excluded volume.

Mathematical Modelling of Deciduous Tree Ignition by Ground Lightning Discharge Taking into Account Localization of Reactive Wood

2011 ◽  
Vol 6 (4) ◽  
pp. 95-106
Author(s):  
Nikolay Baranovskiy ◽  
Geniy Kuznetsov
Keyword(s):  
Heat Transfer ◽  
Numerical Simulation ◽  
Mathematical Modelling ◽  
Lightning Discharge ◽  
Deciduous Tree ◽  
Tree Trunk ◽  
Mathematical Statement ◽  
Cylindrical System ◽  
Typical Range

Physical and mathematical statement and results of the numerical simulation of a problem about deciduous tree (birch) ignition by ground lightning discharge are presented. The problem is considered in flat statement in cylindrical system of coordinates. Heat transfer features taking into account localization of reactive wood are considered. The parametrical analysis is carried out and conditions of tree trunk ignition in a typical range of parameters of influence of positive discharges are obtained

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