paraview question (dambreak4phase)

wjchoi · February 15, 2022, 06:50

hello, i am a beginner of openfoam !

when i studied dambreak4phase, i had a question..

there are four materials, air, water, oil, mercury in dambreak4phase case..

and i want to see the motion or flow of those materials simultaneously in one screen!!
however, the option that i can view the flow of the material only allows me to see the motion of one of these materials mentioned above respectively..
(the option that i mentioned is "coloring". "coloring option" in "Display" only provides the single motion of the material respectively, not simulataneously.. for example, when i selected water, the water appears in screen. and then to want to see the flow of oil with water, so if i selected oil, and then water disappear in screen,, so i can only see the oil... i want to see the flow of water, oil, mercury simulatenously !! )

is there anyone to tell me solution about this?

(actually i found one way to achieve this,, this is related "groupdataset" and "adjusting opacity", but this method is not efficient.. because i have to adjust opacity,
it's difficult for me to see the material clearly after adjusting the opacity)

Wesley · October 10, 2024, 07:43

I realize it has been a long time since this was posted, and I have the same question.

A solution is shown starting at page 19 of this document: https://www.tfd.chalmers.se/~hani/ku...ssonReport.pdf

The version of ParaFoam/ParaView in the link is older, the document is from 2010, and was run from OpenFOAM 1.7.

I needed one more step: further down in the "Properties" tab is a section for "Colors" that needs to be set to "alphas".

I am sure there is some more refining of the color scale that can make the phase much more clear, but this is at least a start.

I hope this is helpful to others searching for guidance on how to show multiple phases at the same time.

Wesley

February 15, 2022, 06:50	paraview question (dambreak4phase)	#1
wjchoi New Member Join Date: Jan 2022 Posts: 27 Rep Power: 4	hello, i am a beginner of openfoam ! when i studied dambreak4phase, i had a question.. there are four materials, air, water, oil, mercury in dambreak4phase case.. and i want to see the motion or flow of those materials simultaneously in one screen!! however, the option that i can view the flow of the material only allows me to see the motion of one of these materials mentioned above respectively.. (the option that i mentioned is "coloring". "coloring option" in "Display" only provides the single motion of the material respectively, not simulataneously.. for example, when i selected water, the water appears in screen. and then to want to see the flow of oil with water, so if i selected oil, and then water disappear in screen,, so i can only see the oil... i want to see the flow of water, oil, mercury simulatenously !! ) is there anyone to tell me solution about this? (actually i found one way to achieve this,, this is related "groupdataset" and "adjusting opacity", but this method is not efficient.. because i have to adjust opacity, it's difficult for me to see the material clearly after adjusting the opacity)

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October 10, 2024, 07:43		#2
Wesley New Member Wesley T. Join Date: Apr 2009 Posts: 28 Rep Power: 17	I realize it has been a long time since this was posted, and I have the same question. A solution is shown starting at page 19 of this document: https://www.tfd.chalmers.se/~hani/ku...ssonReport.pdf The version of ParaFoam/ParaView in the link is older, the document is from 2010, and was run from OpenFOAM 1.7. I needed one more step: further down in the "Properties" tab is a section for "Colors" that needs to be set to "alphas". I am sure there is some more refining of the color scale that can make the phase much more clear, but this is at least a start. I hope this is helpful to others searching for guidance on how to show multiple phases at the same time. Wesley