Re: [deal.II] Step-29

2019-08-17 Thread Wolfgang Bangerth
Muhammad, > When we get the solution of Helmoltz equation using the function > UltrasoundProblem::solve () > [...] > > The output solution will be alpha and Beta from the function > UltrasoundProblem::solve (). It will become of the input of the class > class ComputeIntensity : public

Re: [deal.II] how to get the transpose of a block sparsity matrix?

2019-08-17 Thread Wolfgang Bangerth
On 8/16/19 9:41 PM, hua zhang wrote: >         I am studying goal oriented adaptivity for FSI problems and code it > in deal.ii. The system consists of velocity, pressure, displacement(u,p,w), > so  I use block sparsity matrix for system matrix. When I solve the dual > equation, I find what I

Re: [deal.II] When Lame and nu are big number, the result is always zero.

2019-08-17 Thread Wolfgang Bangerth
On 8/17/19 2:49 AM, 张嘉宁 wrote: > I am the new one here, and recently I test a program solving elastic problem > considering neumann boundary conditions. So I finish  it on the basis of > Step-17 by adding the neumann boundary conditions. I found that wen lame and > mu are not large (i.e. 

Re: [deal.II] Parallel distributed hp solution transfer

2019-08-17 Thread Wolfgang Bangerth
Doug, > I am trying to use the parallel::distributed::SolutionTransfer LinearAlgebra::distributed::Vector, hp::DoFHandler> class and I > can't seem to use it similarly to the serial version. > > I looked through the tests/distributed_grids/solution_transfer_0*.cc tests > and > none of them

[deal.II] When Lame and nu are big number, the result is always zero.

2019-08-17 Thread 张嘉宁
Hi, I am the new one here, and recently I test a program solving elastic problem considering neumann boundary conditions. So I finish it on the basis of Step-17 by adding the neumann boundary conditions. I found that wen lame and mu are not large (i.e. equals to 1 by default), the solution

[deal.II] Parallel distributed hp solution transfer

2019-08-17 Thread Doug
Hello, I am trying to use the parallel::distributed::SolutionTransfer, hp::DoFHandler> class and I can't seem to use it similarly to the serial version. I looked through the tests/distributed_grids/solution_transfer_0*.cc tests and none of them seem to be testing for the hp refinement. The