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Reza September 17, 2008 02:31

boundary conditions of level set equation
 
Hello

I am starting to write a simple code with level set method by constant external speed.

but I do not know, what boundary condition shuold I use?

thanks

jinwon park September 17, 2008 06:32

Re: boundary conditions of level set equation
 
Simple interpolation --> Constant interpolation or linear interpolation. See Fedkiw's papers.

Reza September 17, 2008 18:15

Re: boundary conditions of level set equation
 
Which Fedkiw's paper does explain these boundary conditions?

How can I use simple or constant interpolation for

boundary conditions of level set equation?

what about periodic or extrapolating boundary condition?

thanks.

jinwon park September 17, 2008 18:37

Re: boundary conditions of level set equation
 
The title begins with "non-oscillatroy ...". Need to google.

Reza September 20, 2008 03:50

Re: boundary conditions of level set equation
 
I red this paper, but I donot know, what boundary condition can I use for edges of my computational grids? this paper has used ghost fluid method for zero level set funtion, not for edges of computational grids. what can I do?

thanks


HVRM April 29, 2016 15:05

Is your problem solved?
 
Hi,

I am also using level set evolution to track moving interfaces. I am using one sided higher order differences to discretise derivative of \phi. Though, I am able to capture the interface at later times but there are garbage values at boundaries. Could anybody suggest how to discretise the gradient of \phi at the boundaries.

Thanks

aebakkar July 10, 2017 15:17

BC for LS
 
The boundary condition is a Dirichlet BC at the inlets where the value of the LS is to be constant. That should solve the problem.
Dont remember the exact paper where its written.

Mohammed_D July 8, 2019 04:18

A Review of Level-Set Methods and Some Recent Applications

Cheers


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