www.gusucode.com > Matlab在化学工程中的应用 > Matlab在化学工程中的应用/实用化工计算机模拟－Matlab在化学工程中的应用/Examples/Chapter 5/PDEtoolPoisson.m

    function pdemodel
%
%   Author: HUANG Huajiang
%   Copyright 2003 UNILAB Research Center, 
%   East China University of Science and Technology, Shanghai, PRC
%   $Revision: 1.0 $  $Date: 2003/03/12 $

[pde_fig,ax]=pdeinit;
pdetool('appl_cb',1);
set(ax,'DataAspectRatio',[1 1.5 1]);
set(ax,'PlotBoxAspectRatio',[6 4 1]);
set(ax,'XLim',[-6 6]);
set(ax,'YLim',[-6 6]);
set(ax,'XTickMode','auto');
set(ax,'YTickMode','auto');
pdetool('gridon','on');

% Geometry description:
pderect([-5 5 5 -5],'R1');
set(findobj(get(pde_fig,'Children'),'Tag','PDEEval'),'String','R1')

% Boundary conditions:
pdetool('changemode',0)
pdesetbd(4,...
'dir',...
1,...
'1',...
'100')
pdesetbd(3,...
'dir',...
1,...
'1',...
'100')
pdesetbd(2,...
'dir',...
1,...
'1',...
'100')
pdesetbd(1,...
'dir',...
1,...
'1',...
'100')

% Mesh generation:
setuprop(pde_fig,'Hgrad',1.3);
setuprop(pde_fig,'refinemethod','regular');
pdetool('initmesh')
pdetool('refine')
pdetool('jiggle')

% PDE coefficients:
pdeseteq(1,...
'1.0',...
'0.0',...
'2',...
'1.0',...
'0:10',...
'0.0',...
'0.0',...
'[0 100]')
setuprop(pde_fig,'currparam',...
['1.0';...
'0.0';...
'2  ';...
'1.0'])

% Solve parameters:
setuprop(pde_fig,'solveparam',...
str2mat('0','1992','10','pdeadworst',...
'0.5','longest','0','1E-4','','fixed','Inf'))

% Plotflags and user data strings:
setuprop(pde_fig,'plotflags',[1 1 1 1 1 1 1 1 0 0 0 1 1 0 1 0 0 1]);
setuprop(pde_fig,'colstring','');
setuprop(pde_fig,'arrowstring','');
setuprop(pde_fig,'deformstring','');
setuprop(pde_fig,'heightstring','');

% Solve PDE:
pdetool('solve')