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Showing results 1 to 25 of 54 Search took 0.00 seconds. Search: Posts Made By: gregjunqua

Forum: OpenFOAM Running, Solving & CFD November 6, 2014, 19:45

Replies: 2 Turbulence model Views: 906 Posted By gregjunqua You should at least describe what do you want to... You should at least describe what do you want to study. Steady unsteady laminar .... how many phases if it's just for finding a tutorial with these two parameters ubuntu got a search engine

Forum: OpenFOAM Running, Solving & CFD November 6, 2014, 19:39

Replies: 3 y+ selection with epsilonWallFunction and omegaWallFunction Views: 3,964 Posted By gregjunqua You answered by yourself, you will use an invalid... You answered by yourself, you will use an invalid boundary condition since some wall function are only valid for the logarithmic layer position and when y+<5 you are in the linear sublayer. ...

Forum: OpenFOAM Programming & Development November 2, 2014, 19:59

Replies: 1 how to link object file into my executable Views: 1,360 Posted By gregjunqua Hi Stef What do you mean by standalone? You... Hi Stef What do you mean by standalone? You wanna make an exe file? Why not using the wmake tool compile your files and the solver? it would be easier. I don't know if you need it, but in...

Forum: OpenFOAM Running, Solving & CFD October 19, 2014, 20:48

Replies: 2 Wall Functions: How do to decide on the y+? Views: 998 Posted By gregjunqua If you are using a wall function. Your fist point... If you are using a wall function. Your fist point of the grid should be where the logarithmic law is valid. it mean that 30<y+<(500-1000) to stay in the log layer. 500-1000 might be high. Perhaps...

Forum: OpenFOAM Programming & Development September 17, 2014, 20:43

Replies: 8 nutRoughwallfunction arguments Views: 5,250 Posted By gregjunqua Dear all I got the same question as Ksenia ... Dear all I got the same question as Ksenia where is there any bibliography about this wall function

Forum: OpenFOAM Running, Solving & CFD September 17, 2014, 20:33

Replies: 14 Wind on building simulation Views: 4,321 Posted By gregjunqua if you use symettryPlane you need to link it to... if you use symettryPlane you need to link it to one other face. But it's only good for geometrical design (in order to save memory and time). slip condition is a good condition. you should have a...

Forum: OpenFOAM Pre-Processing September 17, 2014, 20:19

Replies: 1 checking MeshSize and first cell position Views: 942 Posted By gregjunqua checking MeshSize and first cell position Hi there After several unsuccessful research, I am actually searching of a way to check my mesh size specially the near wall. Like having the minimum mesh size on x direction y , z... the...

Forum: OpenFOAM Running, Solving & CFD September 4, 2014, 22:25

Replies: 14 Wind on building simulation Views: 4,321 Posted By gregjunqua Hi there you needn't to program just look at... Hi there you needn't to program just look at tutorials/incompressible/simpleFoam/turbineSiting it show the different inlet for ABL layer epsilon : atmBoundaryLayerInletEpsilon k :...

Forum: OpenFOAM Running, Solving & CFD August 27, 2014, 19:20

Replies: 14 Wind on building simulation Views: 4,321 Posted By gregjunqua My meaning is that you are in atmospheric... My meaning is that you are in atmospheric boundary layer condition. So you need to apply a log-law (or the power law) on the inlet and change the inlet accordingly to the epsilon (or omega) and to...

Forum: OpenFOAM Running, Solving & CFD August 25, 2014, 20:29

Replies: 14 Wind on building simulation Views: 4,321 Posted By gregjunqua what is your inlet condition? (by the way the... what is your inlet condition? (by the way the others) Don't forget that you are in ABL condition many things need to be change. And then motorbike simulation don't agree with your simulation what...

Forum: OpenFOAM Running, Solving & CFD August 19, 2014, 20:03

Replies: 4 Strange non converging beharvior Views: 815 Posted By gregjunqua the zeroGradient one for y+ I will have look... the zeroGradient one for y+ I will have look later i am not in my work office

Forum: OpenFOAM Running, Solving & CFD August 19, 2014, 09:30

Replies: 4 Strange non converging beharvior Views: 815 Posted By gregjunqua for k i got the standard one how for omega it... for k i got the standard one how for omega it is omegaWallFunction for nut nutKAtmRoughWallFunction U it is fixed to 0 do you think it come from there? I fixed it by using a simple grading...

Forum: OpenFOAM Running, Solving & CFD August 18, 2014, 18:51

Replies: 4 Strange non converging beharvior Views: 815 Posted By gregjunqua Strange non converging beharvior Hi all, I am using a k-omega SST with simpleFoam over a flat boundary. I testing different inlet condition. For my first test I just use a log law. But i am facing a non convergence of my...

Forum: OpenFOAM Pre-Processing August 13, 2014, 21:00

Replies: 2 Proper BCs for 3D exterior plate flow with simpleFoam? Views: 1,143 Posted By gregjunqua Hi there is a similar case in openfoam in... Hi there is a similar case in openfoam in simplefoam turbinsiting if my memory is good if your sides are far enough from the object you can try the slip condition. If your upper boundary is near...

Forum: OpenFOAM Running, Solving & CFD May 6, 2014, 20:48

Replies: 0 From simpleFoam to pimpleDyMFoam Views: 1,035 Posted By gregjunqua From simpleFoam to pimpleDyMFoam Dear Foamers I am modelling the wind over some waves. For that i am using moveDynamicMesh simpleFoam and pimpleDyMFoam. I am facing some trouble to solve it since the simulation in pimpleDyMFoam...

Forum: OpenFOAM Post-Processing February 24, 2014, 20:02

Replies: 0 Compare two data sets same mesh Views: 1,176 Posted By gregjunqua Compare two data sets same mesh Hi, I had done some runs with different wall boundary conditions. I would like to know where are the difference. And i don't understand the python calculator in the case of comparing two data setes...

Forum: OpenFOAM Community Contributions October 23, 2013, 21:57

Replies: 660 [waves2Foam] Waves2Foam Related Topics Views: 216,204 Posted By gregjunqua Hi Nope it's should be set with the wave period... Hi Nope it's should be set with the wave period depending your experiment but it's not the period From the wiki : http://openfoamwiki.net/index.php/Contrib/waves2Foam "Tsoft should be given a...

Forum: OpenFOAM October 14, 2013, 03:39

Replies: 1 wave generation on open foam ? Views: 2,078 Posted By gregjunqua Hi there, i may suggest to install waves2foam. ... Hi there, i may suggest to install waves2foam. Its a nice plugging how save a lot of hour. But for the wave breaking (because i don't study it) you should search some information on ...

Forum: OpenFOAM September 11, 2013, 22:29

Replies: 15 Flow simulation in wind tunnel Views: 4,402 Posted By gregjunqua You should explore the different folder 0/ ... You should explore the different folder 0/ system/ constant/ you can start by system/controlDict where you define everything of your simulation 0/ for know the boundary condition. ...

Forum: OpenFOAM Pre-Processing September 4, 2013, 03:53

Replies: 1 how to create a logarithmic boundary layer input? Views: 1,200 Posted By gregjunqua you can use the tool swak4foam you can input... you can use the tool swak4foam you can input easily a log law boundary (funky Boundary)

Forum: OpenFOAM Community Contributions June 12, 2013, 23:01

Replies: 660 [waves2Foam] Waves2Foam Related Topics Views: 216,204 Posted By gregjunqua Dear Neils, As i had say earlier I am... Dear Neils, As i had say earlier I am interested by adding the wind. But i am stuck with this problem is that i would like to apply a different wind condition than the one proposed in your module. ...

Forum: OpenFOAM May 28, 2013, 21:30

Replies: 19 Courant number goes crazy Views: 4,855 Posted By gregjunqua Hi This occur for me when i don't compute the... Hi This occur for me when i don't compute the current number http://www.openfoam.org/docs/user/cavity.php . Did you check it out?

Forum: Hardware May 22, 2013, 03:57

Replies: 5 Bios acces to a dell computer Views: 2,913 Posted By gregjunqua Hi The problem is i don't have cable, even the... Hi The problem is i don't have cable, even the adaptator need an adaptator... so i don't know how to fix this problem, For fix it the university gave me access to the cluster, but i am non root...

Forum: Hardware May 17, 2013, 06:59

Replies: 5 Bios acces to a dell computer Views: 2,913 Posted By gregjunqua Nope i only got one cable. So it is not possible... Nope i only got one cable. So it is not possible to do it... I really can't understand that a computer that expensive can't allow to access to the bios because of the screen... Thank you dell

Forum: Hardware May 14, 2013, 22:09

Replies: 5 Bios acces to a dell computer Views: 2,913 Posted By gregjunqua Bios acces to a dell computer Hi there The place where i work, gave me a workstation. The problem it is on windows and i use linux software. I decide to put a virtual machine on the workstation because it s the most...

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