How to apply boundary condition on nodes using recommended workflow of PDE Toolbox?

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Aditi
Aditi 2018-1-27
评论： Aditi 2018-1-31
Can we use a function handle to applyBoundaryCondition on region type "Nodes"?
If not, is there any other way of apply boundary conditions on edge nodes using recommended workflow of PDE Toolbox?

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回答（1 个）

Ravi Kumar
Ravi Kumar 2018-1-29
Hi Aditi,
It is currently not possible to apply BC onto Nodes directly. Can you provide a bit more details on your use case, with example code, to see if there is a workaround to achieve the end goal.
Regards, Ravi
  1 个评论
Aditi
Aditi 2018-1-31
My problem is related to applying boundary condition on nodes, and the boundary condition value is dependent on value of parameter a.My code is :
if a>2
BC = @(region,state) [(state.u(1,:)-E_0a)+state.u(2,:).*(E_0c-state.u(1,:));...
-state.u(2,:).*(E_0c-state.u(1,:))];
else
BC = @(region,state) [state.u(2,:).*(E_0c-state.u(1,:));...
-state.u(2,:).*(E_0c-state.u(1,:))];
end
applyBoundaryCondition(model,'neumann','Edge',5:20,'g',BC,'Vectorized','off');
I need to define value of boundary condition at nodes for which a parameter is known. For example, if for node 2, if a > 2, then apply boundary condition 1 on that node, and boundary condition 2 for rest of the nodes.
Is there any way to do this using recommended workflo of PDE Toolbox?

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