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Message #01594
Re: Functions for applying boundary conditions to the RHS vector only now accept the solution vector x. Where Dirichlet boundary conditions are applied, b = x - bc.The is useful for applying boundary conditions within Newton iterations. [...]
On Mon, Dec 05, 2005 at 08:29:27AM +0100, Johan Hoffman wrote:
> Isn't this the natural way to deal with Neumann bc? Just add a surface
> integral to the variational form?
Yes. Maybe there can be some automation for specifying boundary
conditions on a higher level, but the correct way to do this is
probably to let each module specify a list of possible boundary
conditions, since the available boundary conditions will depend on the
equation (like "outflow boundary conditions" for Navier-Stokes).
The module would choose how to implement the boundary conditions, like
strong or weak.
/Anders
Follow ups
References
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Re: Functions for applying boundary conditions to the RHS vector only now accept the solution vector x. Where Dirichlet boundary conditions are applied, b = x - bc.The is useful for applying boundary conditions within Newton iterations. [...]
From: Garth N. Wells, 2005-12-02
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Re: Functions for applying boundary conditions to the RHS vector only now accept the solution vector x. Where Dirichlet boundary conditions are applied, b = x - bc.The is useful for applying boundary conditions within Newton iterations. [...]
From: Anders Logg, 2005-12-02
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Re: Functions for applying boundary conditions to the RHS vector only now accept the solution vector x. Where Dirichlet boundary conditions are applied, b = x - bc.The is useful for applying boundary conditions within Newton iterations. [...]
From: Garth N. Wells, 2005-12-02
-
Re: Functions for applying boundary conditions to the RHS vector only now accept the solution vector x. Where Dirichlet boundary conditions are applied, b = x - bc.The is useful for applying boundary conditions within Newton iterations. [...]
From: Anders Logg, 2005-12-02
-
Re: Functions for applying boundary conditions to the RHS vector only now accept the solution vector x. Where Dirichlet boundary conditions are applied, b = x - bc.The is useful for applying boundary conditions within Newton iterations. [...]
From: Garth N. Wells, 2005-12-02
-
Re: Functions for applying boundary conditions to the RHS vector only now accept the solution vector x. Where Dirichlet boundary conditions are applied, b = x - bc.The is useful for applying boundary conditions within Newton iterations. [...]
From: Anders Logg, 2005-12-03
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Re: Functions for applying boundary conditions to the RHS vector only now accept the solution vector x. Where Dirichlet boundary conditions are applied, b = x - bc.The is useful for applying boundary conditions within Newton iterations. [...]
From: Johan Hoffman, 2005-12-05
