Dynamic Simulation Of A Deposition Process
Author(s)
J. P. Caire & A. Javidi
Abstract
A new solution for the computation of a current distribution with a moving
boundary is presented. The numerical scheme is based on the capabilities of two
commercial codes FEMLAB 2.3 and MATLAB 6.1. First a computation is
carried out with FEMLAB which provides the electrical potential distribution at
the initial time. The FEM problem and its initial solution are then saved as a
MATLAB program. The MATLAB code containing the whole – draw, mesh,
solve, plot – sequence is then modified to automate the iterative process.
A movie is finally made from the successive solutions stored as JPEG pictures.
A metal deposition process is presented as a simple test but difficult benchmark.
This method is validated and can be easily extended to much more complex
coupled electrochemical processes.
Keywords: FEM, primary current distribution, electrodeposition, moving
boundary.
1 Introduction
The problems associated to evolutionary shape change are numerous and
difficult to solve. They appear in various fields of electrochemical engineering
such as electrodeposition [1,4,5,7,10–16], electro-machining [17],
electropolishing [8], and corrosion processes [6]. Most popular commercial
codes are now able to compute primary, secondary or tertiary current
distributions for any geometry. If it is easy to compute the current distribution
for a given geometry, it is very difficult and time consuming to deduce the time
evolution of the moving interface related to the current distribution.
One of the first attempts to model the moving deposit profiles is probably due
to Deconinck [1] in 1985. Since then, many authors tried to compute moving
profiles by use of different numerical methods such as finite difference method
(FDM) [6,10,12,14], boundary element method (BEM) [1,5,9], finite element
Keywords
FEM, primary current distribution, electrodeposition, moving
boundary.
Related Book
Other papers in this volume
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