Search found 18 matches
- 29 Jan 2012, 09:05
- Forum: ElmerSolver
- Topic: Navier Stokes Convergence issues
- Replies: 1
- Views: 2838
Re: Navier Stokes Convergence issues
hello. My experience is that using Picard (default) iteration scheme throughout (without jumping to Newton's) might help. For that, make sure followings are set properly Nonlinear System Newton After Iterations = 30 ! grater than (Nonlinear System Max Iterations = 20) Nonlinear System Newton After T...
- 25 Jan 2012, 21:07
- Forum: ElmerSolver
- Topic: Solver activation!
- Replies: 1
- Views: 1691
Solver activation!
Hello Elmer Guys, I understand that there are quite a few options on how and when to activate a solver, by inserting "Exec Solver" command in a relevant solver. "Exec Interval" is also there; but, what interval does it refer to? In fact, I need to activate/deactivate solver as to...
- 05 Oct 2011, 09:37
- Forum: ElmerSolver
- Topic: problem with sliding BC, when solving NS solver locally!
- Replies: 0
- Views: 1652
problem with sliding BC, when solving NS solver locally!
Hi guys, I just wanted to make slight changes in the Naiver-Stokes solver (FlowSolve). I obtained the source codes, subroutine FlowSolve.src and module NaiverStokes.src, and saved them as myFlowSolve.f90 and myNaiverStokes.f90 after making necessary changes. I compiled them locally and obtained the ...
- 08 Sep 2011, 21:11
- Forum: ElmerSolver
- Topic: saving data along a line in 3D
- Replies: 0
- Views: 1580
saving data along a line in 3D
Hi guys, In a 3D time-marching Navier–Stokes problem where the domain (upper) surface evolves in the vertical z-direction (i.e. mesh deforms only in the upper surface boundary), how do I save field variables along a specified line (say sinusoidal) on the surface (evolving) boundary? I tried to speci...
- 04 Oct 2010, 00:08
- Forum: ElmerSolver
- Topic: Sliding BC: problem with n-t coordinate description?
- Replies: 1
- Views: 1894
Sliding BC: problem with n-t coordinate description?
Hi, I am trying to impose a sliding BC for a visco-plastic flow... when I use default Navier Stokes Solver (via GUI) with suitable BC, it works: !--------------------------------------------------------- Solver 1 !--------------------------------------------------------- Equation = Navier-Stokes Pro...
- 05 Apr 2010, 20:39
- Forum: ElmerSolver
- Topic: Dirichlet boundary for a normal component of field variable!
- Replies: 0
- Views: 2287
Dirichlet boundary for a normal component of field variable!
Hi all, I am trying to solve Stokes equation with my own subroutine... the coordinate system is "2-D Cartesian"... in one of the boundaries, I need to set "normal component of velocity" to zero... I tried, but couldn't get it right... A part of .sif for that particular boundary l...
- 23 Mar 2010, 22:57
- Forum: ElmerSolver
- Topic: linking module to user-defined subroutine
- Replies: 2
- Views: 2579
Re: linking module to user-defined subroutine
thanks Juha,
actually it works this way--
$elmerf90 -c myModule.f90 /// this creates object file, along with .mod file
$elmerf90 -o mySolver.dll mySolver.f90 myModule.o
suren.
actually it works this way--
$elmerf90 -c myModule.f90 /// this creates object file, along with .mod file
$elmerf90 -o mySolver.dll mySolver.f90 myModule.o
suren.
- 20 Mar 2010, 00:49
- Forum: ElmerSolver
- Topic: linking module to user-defined subroutine
- Replies: 2
- Views: 2579
linking module to user-defined subroutine
Hi Elmer guys, I am currently trying to link my own module to my own subroutine... but just couldn't get it right! I have a subroutine (say "mySubroutine" in mySolver.f90) which I link to Elmer dynamically as: $ elmerf90 -o mySolver.dll mySolver.f90 It works fine! But, if I try to refer to...
- 30 Nov 2009, 01:46
- Forum: ElmerSolver
- Topic: obtaining nodal (local) vector solution
- Replies: 1
- Views: 2582
Re: obtaining nodal (local) vector solution
I've got it, now... but with the sort of coding:
DO i=1, dim
Velocity(i,1:n) = FlowSolution((dim+1)*(FlowPerm(NodeIndexes(1:n))-1) + i)
END DO
... getting the nodal solution values directly, rather than using default subroutine GetVectorLocalSolution(Velocity)...
~suren
DO i=1, dim
Velocity(i,1:n) = FlowSolution((dim+1)*(FlowPerm(NodeIndexes(1:n))-1) + i)
END DO
... getting the nodal solution values directly, rather than using default subroutine GetVectorLocalSolution(Velocity)...
~suren
- 29 Nov 2009, 12:24
- Forum: ElmerSolver
- Topic: obtaining nodal (local) vector solution
- Replies: 1
- Views: 2582
obtaining nodal (local) vector solution
Hi. I've coded Stokes equation (2-D, Newtonian fluid).. its working well and yielding results (as can be seen in the ElmerPost) same as the ones from the standard NS solver (FlowSolver)... no problem until here... Now I am trying to include the material nonlinearity, which demands the local vector (...