# boundary conditions of level set equation

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 September 17, 2008, 02:31 boundary conditions of level set equation #1 Reza Guest   Posts: n/a 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

 September 17, 2008, 06:32 Re: boundary conditions of level set equation #2 jinwon park Guest   Posts: n/a Simple interpolation --> Constant interpolation or linear interpolation. See Fedkiw's papers.

 September 17, 2008, 18:15 Re: boundary conditions of level set equation #3 Reza Guest   Posts: n/a 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.

 September 17, 2008, 18:37 Re: boundary conditions of level set equation #4 jinwon park Guest   Posts: n/a The title begins with "non-oscillatroy ...". Need to google.

 September 20, 2008, 03:50 Re: boundary conditions of level set equation #5 Reza Guest   Posts: n/a 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

 April 29, 2016, 15:05 Is your problem solved? #6 New Member   HVR Mittal Join Date: Apr 2016 Posts: 1 Rep Power: 0 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

 July 10, 2017, 15:17 BC for LS #7 New Member   Ed Join Date: Jul 2012 Posts: 2 Rep Power: 0 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.

 July 8, 2019, 04:18 #8 New Member   Mustapha Mukhtar Join Date: Dec 2018 Posts: 7 Rep Power: 5 A Review of Level-Set Methods and Some Recent Applications Cheers