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Showing results 1 to 11 of 11 Search took 0.00 seconds. Search: Posts Made By: ghorrocks

Forum: CFX June 13, 2012, 08:36

Replies: 24 Discontinuity at water level in stratified 2 phase flow Views: 3,733 Posted By ghorrocks Have a look at some of the CFX tutorials which... Have a look at some of the CFX tutorials which cover a transient simulation. See how they set up the initial conditions.

Forum: CFX June 13, 2012, 08:15

Replies: 24 Discontinuity at water level in stratified 2 phase flow Views: 3,733 Posted By ghorrocks Simply go to the domain tab and define an initial... Simply go to the domain tab and define an initial condition. Or use the global initialisation tab. If you just want to quickly evolve the flow to a pseudo-steady state flow then use your best...

Forum: CFX June 12, 2012, 19:47

Replies: 24 Discontinuity at water level in stratified 2 phase flow Views: 3,733 Posted By ghorrocks That sounds pretty straight forward to me - you... That sounds pretty straight forward to me - you just need to define an initial condition.

Forum: CFX June 6, 2012, 07:18

Replies: 24 Discontinuity at water level in stratified 2 phase flow Views: 3,733 Posted By ghorrocks 2) Definitely turn ST off unless you know you... 2) Definitely turn ST off unless you know you need it. Try that first, and if you still have problems try transient. 3) Do a sensitivity check to work out the convergence residual you need for this...

Forum: CFX June 6, 2012, 07:05

Replies: 24 Discontinuity at water level in stratified 2 phase flow Views: 3,733 Posted By ghorrocks 2) You do not need surface tension to generate... 2) You do not need surface tension to generate waves. I think you will find ST is not having a significant effect on the final results, but will make convergence MUCH harder to achieve. 3) Yes, and...

Forum: CFX June 6, 2012, 06:20

Replies: 24 Discontinuity at water level in stratified 2 phase flow Views: 3,733 Posted By ghorrocks Some comments: 1) Free surface modelling is... Some comments: 1) Free surface modelling is tricky in steady state. Very hard to get convergence. Try doing it as a transient model. This is especially the case as this is a surface tension model....

Forum: CFX June 6, 2012, 03:11

Replies: 24 Discontinuity at water level in stratified 2 phase flow Views: 3,733 Posted By ghorrocks That is just the section specifying the CEL. The... That is just the section specifying the CEL. The full CCL includes the bondary condition setup, convergence parameters, output file specification, physical models, material properties and lots more.

Forum: CFX June 6, 2012, 02:09

Replies: 24 Discontinuity at water level in stratified 2 phase flow Views: 3,733 Posted By ghorrocks I only want to look at your CCL. Please extract... I only want to look at your CCL. Please extract the full CCL and post that.

Forum: CFX June 3, 2012, 19:26

Replies: 24 Discontinuity at water level in stratified 2 phase flow Views: 3,733 Posted By ghorrocks The zip file only contains a small section of... The zip file only contains a small section of CCL. Can you post the full CCL?

Forum: CFX June 3, 2012, 07:12

Replies: 24 Discontinuity at water level in stratified 2 phase flow Views: 3,733 Posted By ghorrocks Your mesh across the diameter is a bit coarse,... Your mesh across the diameter is a bit coarse, you are resolving the water in only 4 nodes or so. But the problem you are seeing is going to be something about your set up. Either it is not...

Forum: CFX June 2, 2012, 06:37

Replies: 24 Discontinuity at water level in stratified 2 phase flow Views: 3,733 Posted By ghorrocks What is the mesh size in this region? What is the mesh size in this region?

Showing results 1 to 11 of 11

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