scholarly journals Particle Tracking Random Simulation of Pollutant Migration and Diffusion

2021 ◽  
Vol 257 ◽  
pp. 03049
Author(s):  
Zhehua Du ◽  
Xin Lin
Keyword(s):  
Finite Difference ◽  
Finite Difference Method ◽  
Field Distribution ◽  
Particle Tracking ◽  
Difference Method ◽  
Convective Diffusion ◽  
Fluid Velocity ◽  
Particle Tracing ◽  
Particle Tracking Method ◽  
Tracing Method

A two-step Lagrangian particle tracing method was used to simulate the particle movement in convective diffusion. Firstly, the flow field distribution was given by finite difference method. Secondly convective diffusion was simulated by particle tracing method. Jet current through centre slit in the static flow and turbulent flow as well as the side discharge of pollutant were simulated as case study. In this paper, finite difference method is used to solve fluid velocity field distribution, and particle tracking method is used to solve convection-diffusion equation. The result shows that the data produced by particle tracing method is reasonable and the method is stable. This method can be applied to the calculation of the convective diffusion of pollutant and spread to other problems.

scholarly journals MHD Flow between Two Parallel Plates under the Influence of Inclined Magnetic Field by Finite Difference Method

2019 ◽  
Vol 8 (12) ◽  
pp. 4106-4111
Keyword(s):  
Magnetic Field ◽  
Finite Difference ◽  
Finite Difference Method ◽  
Difference Method ◽  
Fluid Velocity ◽  
Mhd Flow ◽  
Inclined Magnetic Field ◽  
Parallel Plates ◽  
Governing Equations ◽  
Magnetic Strength

This study investigates the MHD flow between two parallel infinite plates. Here the upper plate is moving with constant velocity and the lower plate is held stationary and a constant pressure gradient is applied to the system which is under the influence of an inclined magnetic field. The governing equations are formulated and transformed into non dimensional form. Numerical solution of the transformed governing equations are obtained using the Finite Difference method. The fluid velocity at different inclinations of the magnetic field and different strengths of magnetic field have been shown graphically and it has been observed that the increase in the angle of inclination leads to a decrease in fluid velocity and also an increase in magnetic strength leads to a decrease in the velocity profile.

HEAT TRANSFER IN LARGE RUBBER ELEMENTS THROUGH OF MODELING BY FINITE DIFFERENCE METHOD

2019 ◽  
Author(s):  
Lucas Peixoto ◽  
Ane Lis Marocki ◽  
Celso Vieira Junior ◽  
Viviana Mariani
Keyword(s):  
Heat Transfer ◽  
Finite Difference ◽  
Finite Difference Method ◽  
Difference Method
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