Pollutant dispersion in wetland systems: Mathematical modelling and numerical simulation

2007 ◽  
Vol 200 (3-4) ◽  
pp. 360-370 ◽  
Author(s):  
João Frederico C.A. Meyer ◽  
Geraldo L. Diniz
Keyword(s):  
Numerical Simulation ◽  
Mathematical Modelling ◽  
Pollutant Dispersion

Numerical Simulation of Pollutant Dispersion in the Atmosphere

2017 ◽  
Author(s):  
Gustavo Naozuka ◽  
Neyva Romeiro ◽  
Eliandro Cirilo ◽  
Paulo Laerte NATTI ◽  
Letícia Mayumi Doy Okamoto
Keyword(s):  
Numerical Simulation ◽  
Pollutant Dispersion

scholarly journals Numerical simulation of pollutant dispersion in a test ventilated room

2020 ◽  
Vol 1683 ◽  
pp. 022075
Author(s):  
N G Ivanov ◽  
A D Podmarkova ◽  
M A Zasimova ◽  
D Markov
Keyword(s):  
Numerical Simulation ◽  
Pollutant Dispersion

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

scholarly journals Mathematical Modelling of Deforestation Due to Population Density and Industrialization

Jurnal Varian ◽  
2021 ◽  
Vol 5 (1) ◽  
pp. 9-16
Author(s):  
Didiharyono D. ◽  
Irwan Kasse
Keyword(s):  
Numerical Simulation ◽  
Population Density ◽  
Mathematical Modelling ◽  
Equilibrium Point ◽  
Equilibrium Points ◽  
Stability Criteria ◽  
Hurwitz Stability ◽  
Stable Conditions ◽  
Linear Differential ◽  
The Stability

The focus of the study in this paper is to model deforestation due to population density and industrialization. To begin with, it is formulated into a mathematical modelling which is a system of non-linear differential equations. Then, analyze the stability of the system based on the Routh-Hurwitz stability criteria. Furthermore, a numerical simulation is performed to determine the shift of a system. The results of the analysis to shown that there are seven non-negative equilibrium points, which in general consist equilibrium point of disturbance-free and equilibrium points of disturbances. Equilibrium point TE7(x, y, z) analyzed to shown asymptotically stable conditions based on the Routh-Hurwitz stability criteria. The numerical simulation results show that if the stability conditions of a system have been met, the system movement always occurs around the equilibrium point.

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