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Adding a boundary condition over domain
Posted 9 févr. 2016, 00:11 UTC−5 Modeling Tools & Definitions, Parameters, Variables, & Functions Version 5.2 1 Reply
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Hi,
I want to apply a dirichlet boundary condition r= C, How ever I don't want to use the predefined equation given in comsol under boundaries.
The reason being, I am solving a moving interface problem using the level set method and in the level set method the boundary is static and only a virtual boundary moves.
The inner interface (ellipse in the attached file) is given by phils*(1-phils) where phils is a smeard out heaviside function from zero to 1.
I applied a domain weak constraint (1-C)*phils*(1-phils), But it didn't work out well.
Any way of defining this?
Thank you in advance
Ashan
I want to apply a dirichlet boundary condition r= C, How ever I don't want to use the predefined equation given in comsol under boundaries.
The reason being, I am solving a moving interface problem using the level set method and in the level set method the boundary is static and only a virtual boundary moves.
The inner interface (ellipse in the attached file) is given by phils*(1-phils) where phils is a smeard out heaviside function from zero to 1.
I applied a domain weak constraint (1-C)*phils*(1-phils), But it didn't work out well.
Any way of defining this?
Thank you in advance
Ashan
1 Reply Last Post 9 févr. 2016, 00:13 UTC−5
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Posted:
8 years ago
Sorry I missed out the figure
"Hi,
I want to apply a dirichlet boundary condition r= C, How ever I don't want to use the predefined equation given in comsol under boundaries.
The reason being, I am solving a moving interface problem using the level set method and in the level set method the boundary is static and only a virtual boundary moves.
The inner interface (ellipse in the attached file) is given by phils*(1-phils) where phils is a smeard out heaviside function from zero to 1.
I applied a domain weak constraint (1-C)*phils*(1-phils), But it didn't work out well.
Any way of defining this?
Thank you in advance
Ashan "
"Hi,
I want to apply a dirichlet boundary condition r= C, How ever I don't want to use the predefined equation given in comsol under boundaries.
The reason being, I am solving a moving interface problem using the level set method and in the level set method the boundary is static and only a virtual boundary moves.
The inner interface (ellipse in the attached file) is given by phils*(1-phils) where phils is a smeard out heaviside function from zero to 1.
I applied a domain weak constraint (1-C)*phils*(1-phils), But it didn't work out well.
Any way of defining this?
Thank you in advance
Ashan "
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