From: Kameeko K. <ka...@gm...> - 2015-05-15 03:19:54
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Hello, Is there a way to have a variable be constant in one part of the domain and non-constant in the rest, remaining continuous along the interface of the two regions? I believe p-refinement is supported for p>0, but not if one is starting p=0? Thanks, Harriet |
From: Roy S. <roy...@ic...> - 2015-05-15 11:16:56
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On Thu, 14 May 2015, Kameeko Kiwi wrote: > Is there a way to have a variable be constant in one part of the domain and > non-constant in the rest, remaining continuous along the interface of the > two regions? I believe p-refinement is supported for p>0, but not if one is > starting p=0? The only elements which support p=0 are discontinuous elements. Probably not what you want. Maybe you want a subdomain-restricted HIERARCHIC (for the p adaptivity) variable to handle the p>0 part? Then if it's a fixed constant outside that subdomain you use that fixed constant; if it's a variable constant you use a SCALAR variable for it? --- Roy |
From: Kameeko K. <ka...@gm...> - 2015-05-15 14:18:46
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If I made a HIERARCHIC variable and a SCALAR variable, how would the two variables know that they should be continuous at the interface of the subdomains? Or is there a way to make one variable be of different FEFamily types in different subdomains? On Fri, May 15, 2015 at 7:16 AM, Roy Stogner <roy...@ic...> wrote: > > On Thu, 14 May 2015, Kameeko Kiwi wrote: > > Is there a way to have a variable be constant in one part of the domain >> and >> non-constant in the rest, remaining continuous along the interface of the >> two regions? I believe p-refinement is supported for p>0, but not if one >> is >> starting p=0? >> > > The only elements which support p=0 are discontinuous elements. > Probably not what you want. Maybe you want a subdomain-restricted > HIERARCHIC (for the p adaptivity) variable to handle the p>0 part? > Then if it's a fixed constant outside that subdomain you use that > fixed constant; if it's a variable constant you use a SCALAR variable > for it? > --- > Roy > |
From: Roy S. <roy...@ic...> - 2015-05-15 14:20:18
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On Fri, 15 May 2015, Kameeko Kiwi wrote: > If I made a HIERARCHIC variable and a SCALAR variable, how would the > two variables know that they should be continuous at the interface > of the subdomains? They wouldn't. You'd need to manually add constraints (or a penalty term) to enforce (or weakly enforce) that. > Or is there a way to make one variable be of different FEFamily > types in different subdomains? No. --- Roy |