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Showing results 1 to 25 of 194 Search took 0.01 seconds. Search: Posts Made By: mihaipruna

Forum: OpenFOAM Running, Solving & CFD October 30, 2021, 10:25

Replies: 0 does porous media work with multiphaseEulerFoam? Views: 431 Posted By mihaipruna does porous media work with multiphaseEulerFoam? I'm trying to model a mixture of water and two sizes of solid particles with a porous interface between two channels to observe the smaller particle migrating from one channel to the other while the...

Forum: OpenFOAM Running, Solving & CFD October 5, 2021, 10:46

Replies: 0 Porous boundary and particle tracking Views: 302 Posted By mihaipruna Porous boundary and particle tracking Can I use DPMFoam with a porosity region? For all intents and purposes the region is a solid for the particles, but the solute should be going through. This is how I have seen it modeled in the...

Forum: Main CFD Forum January 22, 2019, 14:38

Replies: 0 does this method have value for Engineering visualization? Views: 513 Posted By mihaipruna does this method have value for Engineering visualization? Is this too inaccurate for visualizing flows outside of games, for example, for industry demos? https://pdfs.semanticscholar.org/847f/819a4ea14bd789aca8bc88e85e906cfc657c.pdf

Forum: Main CFD Forum November 10, 2017, 20:20

Replies: 2 Visualizing Aircraft CFD results in Virtual Reality Views: 2,724 Posted By mihaipruna Visualizing Aircraft CFD results in Virtual Reality I created an Android app compatible with Google cardboard allowing the user to view air flow over an aircraft in 3D. Please check out a video here https://www.youtube.com/watch?v=dPwRPW7eN1M ...

Forum: OpenFOAM Post-Processing May 9, 2017, 18:32

Replies: 0 OpenFOAM tutorial results in Virtual Reality Views: 1,510 Posted By mihaipruna OpenFOAM tutorial results in Virtual Reality I put the Wind Over Buildings tutorial results in a free VR Google Play Store app. It requires a 3D viewer like Google Cardboard or a clone. ...

Forum: OpenFOAM Running, Solving & CFD May 27, 2015, 10:46

Replies: 28 No change in phase change using interPhaseChangeFoam Views: 3,412 Posted By mihaipruna no, I had initial alpha=1.I was modeling boiling.... no, I had initial alpha=1.I was modeling boiling. How many time steps did you run it for?

Forum: OpenFOAM Running, Solving & CFD May 27, 2015, 09:42

Replies: 28 No change in phase change using interPhaseChangeFoam Views: 3,412 Posted By mihaipruna why not test it like they did in the tutorial, by... why not test it like they did in the tutorial, by removing the bullet from the cavitatingBullet case and setting a temperature BC? I don't have access to my case files right now.

Forum: OpenFOAM Running, Solving & CFD May 27, 2015, 07:45

Replies: 28 No change in phase change using interPhaseChangeFoam Views: 3,412 Posted By mihaipruna As I posted earlier in the thread, to get it to... As I posted earlier in the thread, to get it to work for me, I had to recompile phaseChangeTwoPhaseMixture

Forum: System Analysis May 27, 2015, 07:43

Replies: 2 iterative analysis of water boiling under pressure Views: 2,180 Posted By mihaipruna thank you for the response, that is kind of what... thank you for the response, that is kind of what I ended up doing, in Excel with VBA macros

Forum: OpenFOAM Running, Solving & CFD May 12, 2015, 08:05

Replies: 9 volume conservation and accurate interface shape Views: 1,341 Posted By mihaipruna VOF methods suffer from interface smearing. ... VOF methods suffer from interface smearing. Check out this paper and follow the references for the interface sharpening model. http://www.djs.si/proc/nene2011/pdf/802.pdf

Forum: OpenFOAM Running, Solving & CFD April 24, 2015, 09:17

Replies: 28 No change in phase change using interPhaseChangeFoam Views: 3,412 Posted By mihaipruna I think I have figure out how to get decent... I think I have figure out how to get decent behavior, with decent time step size that allows you to simulate over longer periods of time. I believe the evaporation rate was unphysical. I used...

Forum: OpenFOAM Running, Solving & CFD April 21, 2015, 08:59

Replies: 28 No change in phase change using interPhaseChangeFoam Views: 3,412 Posted By mihaipruna Version 2.3.1 The tutorial should be applied... Version 2.3.1 The tutorial should be applied pretty much the same way except for the extra compilation for the libraries i mentioned Also there is a Tfinal field in fvSolution which I made the...

Forum: OpenFOAM Running, Solving & CFD April 20, 2015, 13:49

Replies: 4 Problem: volume fraction of gas bubble with twoPhaseEulerFoam Views: 1,265 Posted By mihaipruna I assume this solver uses the VOF method, so the... I assume this solver uses the VOF method, so the interface will not be sharp. Maybe relative to the size of your bubbles , it gets smeared resulting in values less than 1. Try with a more refined...

Forum: OpenFOAM Running, Solving & CFD April 17, 2015, 23:16

Replies: 28 No change in phase change using interPhaseChangeFoam Views: 3,412 Posted By mihaipruna there is one extra step for Martin Andersen's... there is one extra step for Martin Andersen's tutorial that is not specified I believe: you have to recompile the phaseChangeTwoPhaseMixture, by going in that folder and typing wclean and then...

Forum: System Analysis March 19, 2015, 17:54

Replies: 2 iterative analysis of water boiling under pressure Views: 2,180 Posted By mihaipruna iterative analysis of water boiling under pressure I'm trying to build a mathematical model of something like Heron's Aeolipile: http://en.wikipedia.org/wiki/Aeolipile I'd like to know, based on a known heat flux, the pressure and temperature...

Forum: OpenFOAM Running, Solving & CFD February 24, 2015, 22:19

Replies: 0 interPhaseChangeFoam for boiling? Views: 882 Posted By mihaipruna interPhaseChangeFoam for boiling? Is there a way to model the generation of bubbles through heat transfer rather than cavitation using this solver?

Forum: Main CFD Forum March 12, 2014, 17:48

Replies: 7 finite volume boundary conditions Views: 1,647 Posted By mihaipruna there are no metrics because the coordinate... there are no metrics because the coordinate system is not transformed. I used Green's theorem to convert the surface integrals to line integrals (since it's a 2d code) I created the ghost cells...

Forum: Main CFD Forum March 8, 2014, 09:57

Replies: 7 finite volume boundary conditions Views: 1,647 Posted By mihaipruna Well I used ghost cells and what I thought were... Well I used ghost cells and what I thought were good differential boundary conditions , but I still got increasing instability as I was solving the potential equation for a cell center potential as...

Forum: Main CFD Forum March 5, 2014, 10:16

Replies: 7 finite volume boundary conditions Views: 1,647 Posted By mihaipruna hi Ramesh I'm using a cell centered approach... hi Ramesh I'm using a cell centered approach for solving potential flow over a body. By cell centered I mean the potentials are calculated at cell centers, and my grid is the cell edges. I need to...

Forum: Main CFD Forum March 4, 2014, 11:35

Replies: 2 free cfd software Views: 1,378 Posted By mihaipruna ELMER is your best bet probably. I posted a... ELMER is your best bet probably. I posted a workflow with free software here: http://www.squidoo.com/interoperability-71851

Forum: Main CFD Forum March 3, 2014, 21:58

Replies: 7 finite volume boundary conditions Views: 1,647 Posted By mihaipruna finite volume boundary conditions please give me examples of boundary conditions for solving differential equations using the finite volume method, and how they are applied to the governing equations.

Forum: OpenFOAM Pre-Processing February 5, 2014, 08:54

Replies: 44 How to set up BCs for k epsilon model Views: 60,531 Posted By mihaipruna Here's some issues people have helped me with for... Here's some issues people have helped me with for internal flow: http://www.cfd-online.com/Forums/openfoam-solving/99981-internal-flow-bcs-pressure-driven-versus-velocity-driven.html

Forum: Site Help, Feedback & Discussions February 5, 2014, 08:50

Replies: 2 Should there be a forum dedicated o Elmer? Views: 3,176 Posted By mihaipruna yes, i agree that a forum is much easier to use... yes, i agree that a forum is much easier to use than a mailing list and would gain more traction.

Forum: OpenFOAM Pre-Processing February 5, 2014, 08:23

Replies: 44 How to set up BCs for k epsilon model Views: 60,531 Posted By mihaipruna three things: did you actually type... three things: did you actually type "uniforme" in the input file? try to set your free surface like freestream in the motorbike tutorial. if no typos in the file, I would suggest a K-omega...

Forum: Main CFD Forum February 5, 2014, 08:17

Replies: 6 Looking for experimental data for Ahmed body Views: 1,540 Posted By mihaipruna http://cfd.mace.manchester.ac.uk/cgi-bin/cfddb/prp... http://cfd.mace.manchester.ac.uk/cgi-bin/cfddb/prpage.cgi?82&EXP&database/cases/case82/Case_data&database/cases/case82&cas82_head.html&cas82_desc.html&cas82_meth.html&cas82_data.html&cas82_refs.html&c...

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