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[ANSYS Meshing] Bubble modelling to simulate shape oscillations |
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January 30, 2013, 12:16 |
Bubble modelling to simulate shape oscillations
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#1 |
New Member
Akash
Join Date: Jan 2013
Location: India
Posts: 20
Rep Power: 13 |
Hello,
I'm trying to simulate a single bubble shape oscillation and I needed help in modelling it. I created the grid using Gambit. The problem I'm facing is that the bubble interface is not being exported. I have a made a square domain. At the center of the domain I've created a edge who's shape is that of the bubble. I meshed the whole square domain and then tried to split the mesh along the bubble interface. I'm getting some errors saying that the split is unsuccessful. When I tried by creating two faces but meshed only the square domain, the bubble interface doesn't get exported because the other face is not meshed. I do not want to define two separate faces which are non-intersecting and mesh them, as that will not result in a structured mesh. What I need is that the whole domain must be meshed as shown in the attached figure http://imgur.com/0lFY5jD. Then split the mesh along the bubble boundary so that it allows me to specify two different zones. I'm fine if the grid is generated in any other software (Hypermesh or Pointwise or ICEM). At the end of the day, I just need Fluent to identify the two zones explicitly alongwith the bubble interface. Also note that the initial shape of the bubble is complex (not a conic). Since the problem is 2D I'm attaching the .dwg and .tin files http://www.sharecad.org/CADView.aspx...3-7d0c1b40c205 http://sdrv.ms/WfwFB0 Please Help! |
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January 31, 2013, 01:25 |
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#2 | |
Super Moderator
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 3,297
Rep Power: 41 |
Quote:
Now if you want to work with interfaces, you need to disconnect both surfaces. The quickest way (my point of view) is to copy the disk anywhere, then delete the disk at its original place. Now define both interfaces, and move the disk (copy) at its original place. Both surfaces are disconnected, and you can mesh
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In memory of my friend Hervé: CFD engineer & freerider |
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January 31, 2013, 09:07 |
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#3 |
New Member
Akash
Join Date: Jan 2013
Location: India
Posts: 20
Rep Power: 13 |
The problem with splitting the square domain along the curve is, I'll not be able to get a structured grid. I needed a structured grid (all the cells must be rectangles).
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January 31, 2013, 09:38 |
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#4 |
Super Moderator
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 3,297
Rep Power: 41 |
everything is possible
Here is on of many ways to get full hexa mesh It is not nice, but I did it very quick Sans titre1.png Sans titre.jpg
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In memory of my friend Hervé: CFD engineer & freerider |
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January 31, 2013, 12:16 |
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#5 |
New Member
Akash
Join Date: Jan 2013
Location: India
Posts: 20
Rep Power: 13 |
That's a good idea! But I also needed to grid within the circular region, to simulate air.
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February 1, 2013, 01:32 |
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#6 |
Super Moderator
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 3,297
Rep Power: 41 |
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In memory of my friend Hervé: CFD engineer & freerider |
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Tags |
bubble, gambit, icem 2d, multiphase modelling |
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