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Showing results 1 to 9 of 9 Search took 0.00 seconds. Search: Posts Made By: daveatstyacht

Forum: OpenFOAM Running, Solving & CFD August 9, 2011, 20:25

Replies: 322 Free Surface Ship Flow Views: 99,982 Posted By daveatstyacht Ben, I am surprised about the dampening... Ben, I am surprised about the dampening coefficient because I had posed the question about whether it has dimensions or not and had come to the conclusion that it did. That is to say that increasing...

Forum: OpenFOAM Running, Solving & CFD August 9, 2011, 14:18

Replies: 322 Free Surface Ship Flow Views: 99,982 Posted By daveatstyacht Ralph, The reflecting waves are typically... Ralph, The reflecting waves are typically eliminated in commercial solvers with a vertical dampening term applied near the outlet. The documentation in starccm+ goes into detail about it but I am...

Forum: OpenFOAM Running, Solving & CFD August 5, 2011, 19:29

Replies: 322 Free Surface Ship Flow Views: 99,982 Posted By daveatstyacht Ralph, Understandable about the programming for... Ralph, Understandable about the programming for shipFoam being very time consuming (and giving up on sHM). Snappy has a lot of good features about it, but ultimately it's boundary layer application...

Forum: OpenFOAM Running, Solving & CFD August 5, 2011, 12:49

Replies: 322 Free Surface Ship Flow Views: 99,982 Posted By daveatstyacht Hey Ralph, Out of curiosity, did you ever... Hey Ralph, Out of curiosity, did you ever manage to fix the pressure issue for 1.7? Also have you ever tried using relative=true for the BL mesh? I personally have not tried it, but others here have...

Forum: OpenFOAM Running, Solving & CFD August 5, 2011, 08:43

Replies: 322 Free Surface Ship Flow Views: 99,982 Posted By daveatstyacht Ben, Looking at your pointDisplacement file you... Ben, Looking at your pointDisplacement file you appear to have 2 fixedAxis. When I did free to heave and trim it was with one fixed axis with the axis as (0,1,0). The fixedAxis specifies the axis...

Forum: OpenFOAM Running, Solving & CFD August 3, 2011, 15:41

Replies: 322 Free Surface Ship Flow Views: 99,982 Posted By daveatstyacht Ben, Although it has been a while since I... Ben, Although it has been a while since I touched interDyMFoam. I seem to recall that fixedLine constraint is allowing translation movement only along that axis (in your case heave). The refpoint...

Forum: OpenFOAM Running, Solving & CFD August 3, 2011, 14:23

Replies: 322 Free Surface Ship Flow Views: 99,982 Posted By daveatstyacht Ben, Good work getting it to run. My experience... Ben, Good work getting it to run. My experience with sHM (in 1.7.1 mind you) is that it can't seem to produce a good boundary layer mesh for a hull particularly as you have found near the bow....

Forum: OpenFOAM Running, Solving & CFD August 1, 2011, 19:52

Replies: 322 Free Surface Ship Flow Views: 99,982 Posted By daveatstyacht I would avoid using a symmetry plane as your far... I would avoid using a symmetry plane as your far wall BC since if you think about it physically that is saying you have another boat mirrored on the other side (of course if your wall is sufficiently...

Forum: OpenFOAM Running, Solving & CFD August 1, 2011, 16:18

Replies: 322 Free Surface Ship Flow Views: 99,982 Posted By daveatstyacht bouclette, Looking at your pictures you appear... bouclette, Looking at your pictures you appear to have a refinement zone that is at the free surface that only covers a portion of your domain. I have noticed this kind of behavior tends to occur in...

Showing results 1 to 9 of 9

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