Elmer Discussion Forum

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...

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...

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

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...

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 ...

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...

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...