Solid domain in Fluid domain (meshing)

hyugakojiro999 · November 10, 2019, 07:24

Hi to all,

Consider a pipe flow (D=10cm). And put something in it. May be a ball (D=5cm) in the middel of it without touching the pipe wall.

*Can we mesh these domains separately and combine them in FLUENT? So, there will be intersecting domains that FLUENT must consider the intersecting volume as the ball domain and leaving the fluid domain in that volume automaticly.

*I'm not asking the domain substracting method.

jbo214 · November 12, 2019, 12:13

It sounds like what you are driving at is a mesh technique called overset (alternatively chimera) meshing. You create a grid for the background, and then a separate grid for various components that lie in the flow field, and the solver 'intersects' the two grids together to get a unified mesh built up from simpler meshes.

Check these resources out. It likely solves your problem.

http://2016.oversetgridsymposium.org...gger-ANSYS.pdf
https://www.ansys.com/-/media/ansys/...g-brochure.pdf
https://www.youtube.com/watch?v=jukm6w3vMXc
https://www.youtube.com/watch?v=_Cryhe7L3uw

November 10, 2019, 07:24	Solid domain in Fluid domain (meshing)	#1
hyugakojiro999 Member Join Date: May 2016 Posts: 31 Rep Power: 9	Hi to all, Consider a pipe flow (D=10cm). And put something in it. May be a ball (D=5cm) in the middel of it without touching the pipe wall. Can we mesh these domains separately and combine them in FLUENT? So, there will be intersecting domains that FLUENT must consider the intersecting volume as the ball domain and leaving the fluid domain in that volume automaticly. I'm not asking the domain substracting method.

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November 12, 2019, 12:13		#2
jbo214 Member Joshua Join Date: Aug 2014 Posts: 49 Rep Power: 11	It sounds like what you are driving at is a mesh technique called overset (alternatively chimera) meshing. You create a grid for the background, and then a separate grid for various components that lie in the flow field, and the solver 'intersects' the two grids together to get a unified mesh built up from simpler meshes. Check these resources out. It likely solves your problem. http://2016.oversetgridsymposium.org...gger-ANSYS.pdf https://www.ansys.com/-/media/ansys/...g-brochure.pdf https://www.youtube.com/watch?v=jukm6w3vMXc https://www.youtube.com/watch?v=_Cryhe7L3uw