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Showing results 1 to 25 of 64 Search took 0.01 seconds. Search: Posts Made By: Rui

Forum: Main CFD Forum January 29, 2010, 05:13

Replies: 4 Volume of Fluid Method Views: 2,817 Posted By Rui O. Ubbink, Numerical prediction of two fluid... O. Ubbink, Numerical prediction of two fluid systems with sharp interfaces, PhD Thesis, Imperial College, 1997: http://powerlab.fsb.hr/ped/kturbo/openfoam/docs/OnnoUbbinkPhD.pdf

Forum: CFX December 22, 2009, 08:42

Replies: 7 Tank Discharging (Boundary Condition) Views: 3,745 Posted By Rui Hi, Have a look at these: ... Hi, Have a look at these: http://www2.dem.uc.pt/antonio.gameiro/ficheiros/artigos/WSEAS_paper.pdf http://www.wseas.us/e-library/conferences/2005corfu/c1/papers/498-704.pdf...

Forum: Main CFD Forum December 9, 2009, 10:40

Replies: 9 total newbie - Basic Questions Views: 2,289 Posted By Rui I don't know 3d studio max, but if you can create... I don't know 3d studio max, but if you can create a Iges or Step file, than you could import that into a CFD software. But then the real problems are to know where and which way to refine the mesh;...

Forum: CFX November 27, 2009, 05:31

Replies: 13 Cel expressions Views: 2,799 Posted By Rui To me it sounds a good approximation. To me it sounds a good approximation.

Forum: CFX November 27, 2009, 05:13

Replies: 13 Cel expressions Views: 2,799 Posted By Rui If you gave the pressure at the outlet, you don't... If you gave the pressure at the outlet, you don't need to calculate it.

Forum: CFX November 27, 2009, 04:56

Replies: 13 Cel expressions Views: 2,799 Posted By Rui If your fluid is incompressible, the outlet... If your fluid is incompressible, the outlet pressure doesn't change anything (apart from adding a fixed value to the pressure everywhere), does it? And yes, impose a velocity, or mass flow, at the...

Forum: CFX November 27, 2009, 04:09

Replies: 2 Deforming boundaries - is it possible? Views: 1,638 Posted By Rui I've read there are people doing that... I've read there are people doing that (single-phase simulation, and using a moving/deforming boundary to represent the free surface). But I've never seen an example, and always wondered how do you...

Forum: CFX November 27, 2009, 04:00

Replies: 13 Cel expressions Views: 2,799 Posted By Rui In your previous post you said you had... In your previous post you said you had difficulties in creating CEL expressions and you asked for tutorials. That's why I said you should do all the CFX tutorials, and posted that link. Now, I...

Forum: CFX November 26, 2009, 10:08

Replies: 13 Cel expressions Views: 2,799 Posted By Rui I don't think you're a new user. Do ALL the CFX... I don't think you're a new user. Do ALL the CFX Tutorials, and then you'll be a new user. (you can also find them here: http://www.kxcad.net/ansys/ANSYS_CFX/help/help/Tutorials/index.html ) ...

Forum: CFX November 3, 2009, 05:34

Replies: 7 study the act of emtying of a tank(no inlet and an outlet) Views: 1,994 Posted By Rui http://www.kxcad.net/ansys/ANSYS_CFX/help/help/Tut... http://www.kxcad.net/ansys/ANSYS_CFX/help/help/Tutorials/i1315642.html "These are expressions for 1) the downstream free surface height, 2) the density of the fluid, 3) the upstream volume...

Forum: CFX November 3, 2009, 05:26

Replies: 24 Free surface is below than expected..results are not good Views: 6,445 Posted By Rui Dear, :) What you should do? You should... Dear, :) What you should do? You should try to be clear in the description of your problem. DownH=91m, UpH=52m ????!!!! What's this???? And you expect a free surface at 135m????!!!!??? In the...

Forum: CFX October 2, 2009, 04:18

Replies: 21 Simulation of a single bubble with a VOF-method Views: 17,672 Posted By Rui If you have done ALL the tutorials: - Do again... If you have done ALL the tutorials: - Do again the relevant tutorials for your problem (and try to understand what you're doing) - Try to implement your problem. Start by the simplest possible...

Forum: CFX July 21, 2009, 15:11

Replies: 37 CFX gravity driven free surface flow tutorial Views: 14,016 Posted By Rui Ok. I'm sorry to say this, if it is not your... Ok. I'm sorry to say this, if it is not your case, but recently there are a few people posting here that, to be honest, they seem to me to be just joking. And, to be honest again, for their own...

Forum: CFX July 20, 2009, 09:08

Replies: 37 CFX gravity driven free surface flow tutorial Views: 14,016 Posted By Rui Once again, see Tutorial 7 (Free Surface over a... Once again, see Tutorial 7 (Free Surface over a Bump). If you have done this tutorial, I still don't understand where you are having difficulties! What don't you know how to do??? Try to ask more...

Forum: Site Help, Feedback & Discussions July 19, 2009, 05:23

Replies: 4 Deleting a Post Views: 4,993 Posted By Rui Ok. I guess you're right about the balance... Ok. I guess you're right about the balance between user-friendless and the forum structure. And perhaps it's ok as it is now. I don't know if this is possible to implement in the software: But if...

Forum: Site Help, Feedback & Discussions July 18, 2009, 19:57

Replies: 4 Deleting a Post Views: 4,993 Posted By Rui Pete, what you said makes sense. But,... Pete, what you said makes sense. But, despite not being possible to delete one's post, it's still possible to mess up the forum structure. By doing what I did: deleting the text of my post (the...

Forum: Site Help, Feedback & Discussions July 18, 2009, 11:56

Replies: 4 Deleting a Post Views: 4,993 Posted By Rui Deleting a Post If I move the mouse to the Edit button, I see "Edit / Delete Message", but then there isn't (or I can't see :cool:) a way of deleting the message I have posted. Is there any way of doing it? I'm...

Forum: Main CFD Forum July 18, 2009, 11:27

Replies: 14 Dynamic sloshing and hydrodynamic modeling of liquid storage tank for earthquake Views: 5,828 Posted By Rui (http://www.scribd.com/doc/13236112/xtutr11) (http://www.scribd.com/doc/13236112/xtutr11)

Forum: Main CFD Forum July 18, 2009, 05:35

Replies: 2 Flow around a cylinder Views: 1,384 Posted By Rui http://www.worldscibooks.com/engineering/6248.html... http://www.worldscibooks.com/engineering/6248.html http://www.worldscibooks.com/covers/6248.jpg also "available" here: http://books.google.com/books?id=-lbnuyzAXOkC&lpg=PP1&pg=PP1

Forum: Main CFD Forum July 17, 2009, 13:11

Replies: 14 Dynamic sloshing and hydrodynamic modeling of liquid storage tank for earthquake Views: 5,828 Posted By Rui A search in Google gives this as the first item:... A search in Google gives this as the first item: http://www.osti.gov/bridge/servlets/purl/46574-GwOGch/webviewable/46574.pdf

Forum: CFX July 15, 2009, 17:43

Replies: 10 25 analyses in one Views: 1,878 Posted By Rui If you have to change the Outlet Pressure 25... If you have to change the Outlet Pressure 25 times, what's the problem of doing it and saving 25 different *.def files? It's gonna take much less time than the Solver will take to run each case and...

Forum: CFX July 15, 2009, 16:31

Replies: 3 WATER CLOSET DRAINAGE Views: 1,464 Posted By Rui Have a look here: Decreasing Water... Have a look here: Decreasing Water Consumption in Toilets. Optimization of a sanitary discharge valve using ANSYS CFX: http://www.ansys.com/industries/consumer-toiletvalve.htm Optimization of...

Forum: CFX July 15, 2009, 09:59

Replies: 5 sloshing Views: 1,928 Posted By Rui That is, theoretically, obviously the same (you... That is, theoretically, obviously the same (you can't differentiate whether you are being accelerated or under a force field *) But I wonder if both cases are numerically handled by CFX in the same...

Forum: CFX July 15, 2009, 05:06

Replies: 4 closed system Views: 2,197 Posted By Rui To me, it seems you can do this by hand or in... To me, it seems you can do this by hand or in Excel. Heat In -> Nitrogen Enthalpy Rise (E=m\cdot\Delta h ) -> Obtain Pressure and Temperature from Thermodynamics Tables

Forum: CFX July 15, 2009, 04:03

Replies: 4 closed system Views: 2,197 Posted By Rui Try to give a better description about your... Try to give a better description about your case

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