Boundary Conditions in PDE MODEL

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Pavel M
Pavel M 2019-6-13
评论： Torsten 2019-6-13
i create PDE model
g is exported from PDE Tololbox
model = createpde;
geometryFromEdges(model,g);
applyBoundaryCondition(model,'dirichlet','Edge',[1 2 3 12 11 10 9 6],'u',0);
pdegplot(model,'EdgeLabels','on')
xlim([-1.2,1.2])
axis equal
generateMesh(model,'Hmax',0.02,'GeometricOrder','Linear');
Снимок7.jpg(this square is sum of little squares: R1+R2+R3+R4)
but applyBoundaryCondition dont specify Edge 12, 11, 10 ,9 boundary condition u=0.
It is, what i get
Снимок8.jpg
Here, Edges 1 2 3 and 6 are equal 0, but 12 11 10 9 are not, but i specify them
applyBoundaryCondition(model,'dirichlet','Edge',[1 2 3 12 11 10 9 6],'u',0);

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