[deal.II] modify solution vector

Hi, I want to change the solution vector (for example displacement vector from step-8 and step-18) by the vector that depends on the point. I want to iterate over all vertexes and add to each solution component some value that is a function of the vertex coordinate. How can I do it in dealii?

[deal.II] how to find cell in which point lies

point. How to find the cell in which given point lies? Regards, Bryukhanov Ilya -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this message because you are subscribed to the Google

[deal.II] Re: increment Dirichlet boundary condition

3, Denis Davydov wrote: > > Hi Iliya, > > there are numerous things that are wrong > > On Wednesday, February 21, 2018 at 5:32:55 PM UTC+1, Bryukhanov Ilya wrote: >> >> Denis, thanks a lot for your answer and links that you provided. >> >> However, my solut

[deal.II] Re: increment Dirichlet boundary condition

ogether with "distribute_local_to_global"? Thanks a lot in advance. Sorry for my misunderstanding. On Thursday, February 22, 2018 at 1:14:41 AM UTC+3, Denis Davydov wrote: > > Hi Iliya, > > there are numerous things that are wrong > > On Wednesday, February 21, 2018 a

[deal.II] Re: increment Dirichlet boundary condition

:14:41 AM UTC+3, Denis Davydov wrote: > > Hi Iliya, > > there are numerous things that are wrong > > On Wednesday, February 21, 2018 at 5:32:55 PM UTC+1, Bryukhanov Ilya wrote: >> >> Denis, thanks a lot for your answer and links that you provided. >> >> Howeve

[deal.II] increment Dirichlet boundary condition

Hi, I consider elastic problem and forces and displacements on boundaries are changing with time. I don't want to compute FEM matrix on each step. How to correctly simulate the task? I know that there is a simple solution, but my solution is incorrect :) I have two variables for the

[deal.II] Re: increment Dirichlet boundary condition

n the post above. Regards On Thursday, February 22, 2018 at 5:00:45 PM UTC+3, Denis Davydov wrote: > > Hi IIiya, > > On Thursday, February 22, 2018 at 11:55:33 AM UTC+1, Bryukhanov Ilya wrote: >> >> Denis, thanks a lot for the answer! >> >> I think that

[deal.II] Re: increment Dirichlet boundary condition

force, and right boundary is displaced to the right. The solution without 5) is zero, and with 5) it is zero everywhere outside non-zero dirichlet boundary. Regards On Thursday, February 22, 2018 at 5:00:45 PM UTC+3, Denis Davydov wrote: > > Hi IIiya, > > On Thursday, February 2

[deal.II] Re: increment Dirichlet boundary condition

study this > <https://groups.google.com/d/msg/dealii/xo3Fa_olNwM/ObOuJPP2JT0J> thread, > which covers similar question. > > Regards, > Denis. > > On Tuesday, February 20, 2018 at 4:46:19 PM UTC+1, Bryukhanov Ilya wrote: >> >> Hi, >> >> I consider elas

[deal.II] visualization with Matlab

Hi, What is the easiest way to export the output field from dealii and plot it in Matlab? Thank you in advance for your help! -- The deal.II project is located at http://www.dealii.org/ For mailing list/forum options, see https://groups.google.com/d/forum/dealii?hl=en --- You received this

Re: [deal.II] visualization with Matlab

, I need to somehow plot the original solution. I'm just interesting if there is a simple way to do this. On Monday, March 12, 2018 at 2:34:15 PM UTC+3, Wolfgang Bangerth wrote: > > On 03/12/2018 05:15 AM, Bryukhanov Ilya wrote: > > > > What is the easiest way to export the

[deal.II] algorithm of finding cell in a mesh by a point

Hi, I checked the asymptotic complexity of algorithm GridTool::find_active_cell_around_point and found that it is O(N), where N is the number of cells in a mesh. Is it too slow? I heard about algorithms that produce mean asymptotic O(log(N)) or at least O(square root (N)) Regards, Ilya --