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Water/Air flow on ship, what's wrong with my boundary conditions ?

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Old   January 5, 2016, 06:50
Default Water/Air flow on ship, what's wrong with my boundary conditions ?
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Jakub
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Dear Friends

I' am working on two-phase flow on ship of my own made. Results which i get, in my opinion are wrong. Moreover ther is no pressure on the yacht, truly there is nothing.
My setup and residuals: (powietrze=air) (wodamorska=sea water)
all is here http://postimg.org/gallery/38hwqpo4i/0d2b148f/ but I can upload here 10 pics, so here is part:














Thank You very much ! For Your time
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Old   January 10, 2016, 13:33
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Jakub
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i changed some things, still it'd unstable. I have time to 15.01 on my collage. Please help me. Here is my fluent setup: powietrze = air; wodamorska = seawater
http://postimg.org/gallery/36ok2z8py/07d3d352/

I really, really need to help, i won't pass this year on collage, without this simulation.

Greetings Jacob
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Old   January 15, 2016, 05:40
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Jakub
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Hey !

I need You guys, each advice is like gold for me - don't be shy !

I fixed problem with outlet pressures boundaries, by pressure interpolation from neighbor cells.

Now last big problem is changing velocity on fractions. As You can see, there is air at start with the 12 m/s , but it slows down(why), in the same time water fraction, which should to flow with 8 m/s, accelerates to12 m/s...

Please help me, I have new time to the monday...

Your friend Jacob
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File Type: jpg 2016-01-15_10h18_48.jpg (76.7 KB, 15 views)
File Type: jpg 2016-01-15_10h18_22.jpg (75.8 KB, 14 views)
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