scholarly journals A REVISION ON RENSCH'S FINITE DIFFERENCE METHOD FOR CALCULATING THE FIELD DISTRIBUTION IN RESONATORS

1980 ◽  
Vol 29 (3) ◽  
pp. 380
Author(s):  
WU ZHONG-XIANG
Keyword(s):  
Finite Difference ◽  
Finite Difference Method ◽  
Field Distribution ◽  
Difference Method

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.

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

Weighted Finite Difference and Boundary Element Methods Applied to Groundwater Pollution Problems

1991 ◽  
Vol 23 (1-3) ◽  
pp. 517-524
Author(s):  
M. Kanoh ◽  
T. Kuroki ◽  
K. Fujino ◽  
T. Ueda
Keyword(s):  
Boundary Element Method ◽  
Finite Difference ◽  
Finite Difference Method ◽  
Boundary Element ◽  
Difference Method ◽  
Groundwater Pollution ◽  
Small Region ◽  
Boundary Element Methods ◽  
Computational Time ◽  
Element Method

The purpose of the paper is to apply two methods to groundwater pollution in porous media. The methods are the weighted finite difference method and the boundary element method, which were proposed or developed by Kanoh et al. (1986,1988) for advective diffusion problems. Numerical modeling of groundwater pollution is also investigated in this paper. By subdividing the domain into subdomains, the nonlinearity is localized to a small region. Computational time for groundwater pollution problems can be saved by the boundary element method; accurate numerical results can be obtained by the weighted finite difference method. The computational solutions to the problem of seawater intrusion into coastal aquifers are compared with experimental results.

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