Re: [deal.II] Modelling Anistropic materials for electrostatic simulations

> I have been reading through you paper a couple of times now but I od not see > how it relates to anisotropic materials. I could be missing something or > misunderstanding some parts. From what I can tell from the paper, the strong > form of linear elasticity is: > > ∇· σ + b = 0 on Ω. > >

Re: [deal.II] Modelling Anistropic materials for electrostatic simulations

On 11/6/18 8:10 PM, phillip mobley wrote: > > I ma currently exploring 2 directions, Jean-Paul linear elastic direction and > the Mixed-Laplace direction. From what I can tell, modeling the anisotropic > materials will not be a problem in deal.ii. Which is a nice thing. Yes, definitely not a pr

Re: [deal.II] Modelling Anistropic materials for electrostatic simulations

Hello Dr. Bangerth, Thank you for your response and clearing up those questions. I am continually going through steps 8, 20, and 21. I ma currently exploring 2 directions, Jean-Paul linear elastic direction and the Mixed-Laplace direction. From what I can tell, modeling the anisotropic materia

Re: [deal.II] Modelling Anistropic materials for electrostatic simulations

Hello Jean-Paul, Thank you for the links and resources. I am going through them now. I am not very familiar with linear elastic. I was able to better understand the step-20 and how it applies to electrostatics because I was able to relate the equations to their electrostatic equivalents. I hav

Re: [deal.II] How to compute the cellwise error of the finite element solution without exact solution?

On 11/06/2018 08:52 AM, chucui1...@gmail.com wrote: > > And now I have another question: I want to compute numerical solutions > in different widths of meshgrid, so I need different triangulations, > dof_handlers, solution vectors. And I need to compute the finest one at > first because I need

Re: [deal.II] Re: Status of matrix-free CUDA support

Bruno and Martin, Thank you for your responses. I'll try to get a CUDA version of step-48 up and running. Thanks! Steve On Monday, November 5, 2018 at 3:18:25 PM UTC-5, Martin Kronbichler wrote: > > Steve, > > Just to add on what Bruno said: Explicit time integration typically > requires only a

Re: [deal.II] How to restart a time dependent code from its breakpoint?

Dear Chucui, The standard Triangulation class has a save function , so the methodology shown in those examples can likely be applied exactly to the serial case. Best, Jean-Paul > On 06 Nov

Re: [deal.II] How to compute the cellwise error of the finite element solution without exact solution?

Dear Prof. Bangerth, Thank you very much! FEFieldFunction fe_function_finest (dof_handler_finest, solution_finest ); And I can use the fe_function_finest in function: VectorTools:: integrate_difference And now I have another question: I want to compute numerical solutions in different widths

[deal.II] Re: How to restart a time dependent code from its breakpoint?

Dear Jean-Paul and dear Stephen, Thank you for your reply! As the examples you set, and an answer I found: See "Use for serialization" in https://urldefense.proofpoint.com/v2/url?u=http-3A__www.dealii.org_developer_doxygen_deal.II_classparallel-5F1-5F1distributed-5F1-5F1SolutionTransfer.html&d=

Re: [deal.II] How to restart a time dependent code from its breakpoint?

Dear Jean-Paul, Thank you for your reply! As the examples you set, and an answer I found: See "Use for serialization" in https://urldefense.proofpoint.com/v2/url?u=http-3A__www.dealii.org_developer_doxygen_deal.II_classparallel-5F1-5F1distributed-5F1-5F1SolutionTransfer.html&d=DwIBaQ&c=Ngd-ta5y

Re: [deal.II] Modelling Anistropic materials for electrostatic simulations

Philip, > The equations for finding these are exactly in step-20. But the symbols used > are different. Yes -- the beautiful universality of mathematics :-) > 1) Is Raviet-Thomas elements specific for mixed Laplace equations? I > understand that step-20 is a tutorial and for learning. Other

[deal.II] Re: Trouble building from source on MacOS

On Monday, November 5, 2018 at 9:20:21 PM UTC, mrjonm...@gmail.com wrote: > > Thanks for the suggestion. I tried building with candi today, but it > failed somewhere during the p4est-2.0/FAST build from the look of it. I've > been using macports instead of homebrew, and I'm wondering if some of

Re: [deal.II] Modelling Anistropic materials for electrostatic simulations

Dear Philip, Let me offer an alternative to what Wolfgang has suggested. I don’t think that it is necessary to use a mixed formulation to introduce material anisotropy into your problem. If you go back to the derivation in our previous discussion, there was this line: (6) div [\epsilon_{0} \ep