Search found 37 matches
- 22 Apr 2014, 16:57
- Forum: ElmerSolver
- Topic: Navier-Stokes: Pressure profile BC
- Replies: 2
- Views: 1876
Particle Dynamics (Re: Navier-Stokes: Pressure profile BC)
PARTICLE DYNAMICS Hej, from the case explained above I tried to add some particles to check if there is actually a movement of gas/oil/dust... when having a 25Hz pressure wave on a boundary. I have been able to run the Model 29: Particle Dynamic however I cannot understand how the particles are inti...
- 15 Apr 2014, 15:18
- Forum: ElmerSolver
- Topic: Navier-Stokes: Pressure profile BC
- Replies: 2
- Views: 1876
Re: Navier-Stokes: Pressure profile BC
Hej! Something funny... If a null velocity, Velocity 1 = 0 Velocity 2 = 0 is set at the same boundary where the pressure profile is defined (Boundary 1); the simulation perfectly converges. I am not that much into N-S. However, since the frequency of the pressure profile is 25 Hz shouldn't this affe...
- 11 Apr 2014, 17:15
- Forum: ElmerSolver
- Topic: problem with displacement BCs
- Replies: 2
- Views: 2149
Re: problem with displacement BCs
Hej Franco,
It is difficult to say without more information. Could you post your working files?
If you just want to allow the boundary to move only in one direction; shouldn't you restricit the other two?
/Xavi
It is difficult to say without more information. Could you post your working files?
If you just want to allow the boundary to move only in one direction; shouldn't you restricit the other two?
/Xavi
- 11 Apr 2014, 15:18
- Forum: ElmerSolver
- Topic: Navier-Stokes: Pressure profile BC
- Replies: 2
- Views: 1876
Navier-Stokes: Pressure profile BC
Hej, I am trying to simulate the pressure waves propagating in some mm thick cavitiy. I defined Navier-Stokes solver on a body and a Pressure wave on a a boundary. The rest I defined a non-slip condition. Pressure profile is shown on the .SIF file. It has a 25 Hz frequency. To achieve stationary I a...
- 14 Mar 2014, 17:13
- Forum: ElmerSolver
- Topic: Mesh Update - Higly deformed mesh; maybe an adaptive mesh?
- Replies: 1
- Views: 2470
Mesh Update - Higly deformed mesh; maybe an adaptive mesh?
Hej, I am interested on the gas motion due to a cyclic movement of a wall. In order to keep things simple I run a simple case in 2D. So it is defined: - Navier-Stokes - Heat Tranfer - Mesh Update With small wall movements it smoothly runs; however when the mesh is deformed beyond a certain point it ...
- 05 Feb 2014, 12:49
- Forum: ElmerSolver
- Topic: Beam Flexion (the simplest case)
- Replies: 1
- Views: 1835
Beam Flexion (the simplest case)
Circular section beam under radial puntual load at the edge I created the beam and meshed it with Salome (L = 2m, D = 0,1 m). I run the .sif file attached ( l1000_d10.rar ). Elmer .sif file: Material: young = 1,8e11 poission = 0,45 - Lower surface: no movement nor rotation (Boundary 3) - Top Surfac...
- 12 Sep 2013, 14:45
- Forum: ElmerGUI
- Topic: Modeling PTFE: Viscoplastic (Non-LEM)
- Replies: 2
- Views: 4691
Modeling PTFE: Viscoplastic (Non-LEM)
Hej, I am working with a PTFE piece which I applied certain boundary loads. I have modeled it assuming a LEM behavior. Everything fine. Now I want to increase the accuracy of the results using a Non Linear Elastic Material. PTFE shows visco-plasticity: hardening, creep, ... may be even anisotropy. I...