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Showing results 1 to 8 of 8 Search took 0.00 seconds. Search: Posts Made By: r.mojtaba

Forum: OpenFOAM September 10, 2013, 07:50

Replies: 24 Solidification in OpenFoam Views: 14,494 Posted By r.mojtaba An estimation of operating temperature can be the... An estimation of operating temperature can be the average of maximum and minimum temperatures in system. This is also applicable for density. When you enable Solidification model in Fluent,...

Forum: OpenFOAM September 6, 2013, 05:57

Replies: 24 Solidification in OpenFoam Views: 14,494 Posted By r.mojtaba k-ep is a very inaccurate model for near wall... k-ep is a very inaccurate model for near wall regions. The standard turbulence model for general purpose simulations is SST k-w. You can find the reasons in any up to date turbulence text and in CFX...

Forum: OpenFOAM September 5, 2013, 06:19

Replies: 24 Solidification in OpenFoam Views: 14,494 Posted By r.mojtaba If so, why are you using PISO and Body Force... If so, why are you using PISO and Body Force Weighted? I think the problem is not using SIMPLE or PISO / PRESTO! or B.F.W. Reduce all under relaxation factors to 0.5. Finer meshes or smaller time...

Forum: OpenFOAM September 4, 2013, 10:01

Replies: 24 Solidification in OpenFoam Views: 14,494 Posted By r.mojtaba What are Ra and Pr numbers related to your... What are Ra and Pr numbers related to your simulation? I've done an unsteady simulation of melting Gallium in a 2D cavity with Ra=2.2x10^5. I used SIMPLE for pressure-velocity coupling, PRESTO!...

Forum: OpenFOAM September 3, 2013, 11:15

Replies: 24 Solidification in OpenFoam Views: 14,494 Posted By r.mojtaba You need to calculate volume integral of liquid... You need to calculate volume integral of liquid fraction. Fluent can do this by some simple Clicks. Do as below: -From Menu Bar, go to Report and choose Volume Integrals... to open Volume...

Forum: OpenFOAM September 3, 2013, 01:30

Replies: 24 Solidification in OpenFoam Views: 14,494 Posted By r.mojtaba You didn't answer my question about whether the... You didn't answer my question about whether the solidification zone is a fully filled container or not? If there is no gas in contact, using VOF is not necessary at all. When you plot the contour of...

Forum: OpenFOAM August 30, 2013, 21:59

Replies: 24 Solidification in OpenFoam Views: 14,494 Posted By r.mojtaba So you have two zones, one is a closed container... So you have two zones, one is a closed container with PCM solidification and the other with a fluid flow around container, Right? If so, you don't need multiphase model at all. Using Fluent, during...

Forum: OpenFOAM July 20, 2013, 11:59

Replies: 24 Solidification in OpenFoam Views: 14,494 Posted By r.mojtaba Hello danish. As Fabian said, FLUENT can... Hello danish. As Fabian said, FLUENT can solve Solidification/Melting problems. I myself tested and validated the solver for my thesis. There are excellent tutorial and theory materials from Ansys...

Showing results 1 to 8 of 8

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