Model Berangka Untuk Perlakuan Muka Air Tanah Dari Pengaruh Imbuhan Fana

1983 ◽  
pp. 41-55
Author(s):  
Wan Mokthar Nawang ◽  
Md. Zaid Ali
Keyword(s):  
Finite Difference ◽  
Groundwater Recharge ◽  
Numerical Solutions ◽  
Experimental Results ◽  
Piecewise Constant ◽  
Finite Difference Technique ◽  
Unconfined Aquifers ◽  
Implicit Finite Difference

Masalah imbuhfana ke atas muka air tanah dari akuifer bebas berhad adalah diselesaikan menggunakan kaedah berangka beza berhad implisit. Keputusan penyelesaian berangka disahkan baik berbanding dengan kaedah analitik dan ujikaji makmal. Seterusnya kelakuan muka air tanah diselidiki mengenakan imbuh-imbuh jenis sekata,imbuh sekata berubah dengan masa dan imbuh berkurang secara lelurus dengan masa. The problem of transient groundwater recharge from strip basins to finite unconfined aquifers is solved numerically by implicit finite difference technique. The numerical solutions are verified by comparison with analytical and experimental results. The behaviour of watertable is further examined by applying set of different recharge i.e. constant, piecewise constant, and decreasing linearly with time recharge.

Large deflection of plates and beams obeying non-linear stress—strain laws

1974 ◽  
Vol 9 (3) ◽  
pp. 178-184 ◽  
Author(s):  
K R Rushton ◽  
P M Hook
Keyword(s):  
Finite Difference ◽  
Large Deflection ◽  
Experimental Results ◽  
Large Deflections ◽  
Rectangular Plates ◽  
Dynamic Relaxation ◽  
Stress Strain ◽  
Finite Difference Technique ◽  
Non Linear ◽  
Alternative Solutions

The large deflections of rectangular plates and beams obeying a non-linear stress-strain law are examined. Solutions are obtained by use of dynamic relaxation, a numerical finite-difference technique. Comparisons are made with alternative solutions and experimental results. The effects of varying parameters in the non-linear expressions are considered.

Study of the CEE mechanism by voltammetry and chronoamperometry

1986 ◽  
Vol 64 (12) ◽  
pp. 2319-2323 ◽  
Author(s):  
Andrzej Lasia
Keyword(s):  
Finite Difference ◽  
Kinetic Parameters ◽  
Chemical Reaction ◽  
Electrode Surface ◽  
Linear Sweep Voltammetry ◽  
Electrochemical Reactions ◽  
Linear Sweep ◽  
Bivalent Metal ◽  
Finite Difference Technique ◽  
Implicit Finite Difference

The electroreduction of bivalent metal cations may proceed by a CEE mechanism with a heterogenous chemical reaction on the electrode surface. The applications of the convolutive linear sweep voltammetry and chronoamperometry to study that mechanism are presented. The behaviour of the electrochemical reactions was simulated using an implicit finite difference technique for different values of kinetic parameters. The simulated curves were analysed and an agreement between the introduced and obtained data was found.

A Study of Photo-Thermoelastic Wave in Semiconductor Materials With Spherical Holes Using Analytical-numerical Methods

2021 ◽  
Author(s):  
Faris S. Alzahrani ◽  
Ibrahim Abbas
Keyword(s):  
Finite Difference ◽  
Analytical Solution ◽  
Finite Difference Method ◽  
Difference Method ◽  
Numerical Solutions ◽  
Governing Equations ◽  
Thermoelastic Wave ◽  
Spherical Cavities ◽  
Implicit Finite Difference ◽  
Implicit Finite Difference Method

Abstract Analytical and numerical solutions are two basic tools in the study of photothermal interaction problems in semiconductor medium. In this paper, we compare the analytical solutions with the numerical solutions for thermal interaction in semiconductor mediums containing spherical cavities. The governing equations are given in the domain of Laplace transforms and the eigenvalues approaches are used to obtained the analytical solution. The numerical solutions are obtained by applying the implicit finite difference method (IFDM). A comparison between the numerical solutions and analytical solution are presented. It is found that the implicit finite difference method (IFDM) is applicable, simple and efficient for such problems.

Induction Electrohydrodynamic Pump in a Vertical Configuration: Part 1—Theory

1989 ◽  
Vol 111 (3) ◽  
pp. 664-669 ◽  
Author(s):  
J. Seyed-Yagoobi ◽  
J. C. Chato ◽  
J. M. Crowley ◽  
P. T. Krein
Keyword(s):  
Finite Difference ◽  
Temperature Profile ◽  
Electric Conductivity ◽  
Secondary Flow ◽  
Joule Heating ◽  
Numerical Solutions ◽  
Controlling Factors ◽  
Heated Wall ◽  
Optimum Frequency ◽  
Finite Difference Technique

An induction electrohydrodynamic (EHD) pump in an axisymmetric, vertical configuration is studied theoretically. The model includes the effect of entrance conditions, buoyancy effects, secondary flow, and Joule heating. Primarily the forward (cooled wall) and to a lesser extent the backward (heated wall) modes are investigated. A finite difference technique is used to obtain the numerical solutions. A set of these solutions is presented to show the influence of the controlling factors of operating an induction EHD pump. The results indicate that the entrance temperature profile plays an important role in the operation of the pump because steeper profiles produce higher velocities. The pump must be operated at an optimum frequency, wavelength, and electric conductivity level.

scholarly journals Numerical Solutions of Heat and Mass Transfer Effects of an Unsteady MHD Free Convective Flow past an Infinite Vertical Plate with Constant Suction

1970 ◽  
Vol 5 (1) ◽  
pp. 27-36 ◽  
Author(s):  
V Ambethkar
Keyword(s):  
Mass Transfer ◽  
Finite Difference ◽  
Heat And Mass Transfer ◽  
Convective Flow ◽  
Vertical Plate ◽  
Numerical Solutions ◽  
Free Convective Flow ◽  
Finite Difference Technique ◽  
Constant Suction ◽  
Infinite Vertical Plate

The objective of this work is to study heat and mass transfer in an unsteady MHD free convective flow past an infinite vertical plate with constant suction numerically.  Dimensionless governing equations of the problem have been solved by using finite difference technique. Numerical solutions for temperature, velocity, concentration have been obtained for suitable parameters like Grashoff number, mass Grashoff number, Prandtl number and Schmidt number. Rate of heat transfer and mass transfer are studied. The results obtained are discussed with the help of graphs and tables to observe effect of various parameters concerned in the problem under investigation. Stability and convergence of the finite difference scheme is established. Key words: MHD, unsteady, constant suction, finite difference technique, Heat and mass transfer. doi:10.3329/jname.v5i1.1785 Journal of Naval Architecture and Marine Engineering Vol. 5, No. 1 (June, 2008) 27-36

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