Is there any advantage of having single mesh file in single domain?

shivasluzz · October 11, 2015, 00:01

I want to keep only one domain for using mesh adaptation in my simulation...
But my geometry is complex and having 3 3D regions...
All 3 files are structured mesh.. I merged the 3 files by merging blocking topo, merging bodies, merging vertices at the interfaces and keeping all the blocks in that single body and deleted the interface surface mesh (still I couldn't get continuous domain!!)

Then I tried to keep the 3 bodies in the same domain (since all r stationary) and created domain interface to join the mesh files within the same domain! It worked and I am able to use mesh adaptation!

Now my question is, many times many persons tries to merge the meshes (there are so many questions for merging structured mesh in this forum).. If at all we can keep all the meshes within single domain using domain interfaces, then wat is the use of merging meshes?

ghorrocks · October 11, 2015, 05:30

There is a price to pay when you use interfaces. It increases memory use, slows the simulation down and causes additional blurring of the variable fields at the interface. Whether this is significant or not depends on the simulation. But most of the time these issues do not matter and it can make generating meshes much easier so it can help a lot.

October 11, 2015, 00:01	Is there any advantage of having single mesh file in single domain?	#1
shivasluzz Senior Member sluzzer Join Date: Jul 2014 Posts: 142 Rep Power: 11	I want to keep only one domain for using mesh adaptation in my simulation... But my geometry is complex and having 3 3D regions... All 3 files are structured mesh.. I merged the 3 files by merging blocking topo, merging bodies, merging vertices at the interfaces and keeping all the blocks in that single body and deleted the interface surface mesh (still I couldn't get continuous domain!!) Then I tried to keep the 3 bodies in the same domain (since all r stationary) and created domain interface to join the mesh files within the same domain! It worked and I am able to use mesh adaptation! Now my question is, many times many persons tries to merge the meshes (there are so many questions for merging structured mesh in this forum).. If at all we can keep all the meshes within single domain using domain interfaces, then wat is the use of merging meshes?

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October 11, 2015, 05:30		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,703 Rep Power: 143	There is a price to pay when you use interfaces. It increases memory use, slows the simulation down and causes additional blurring of the variable fields at the interface. Whether this is significant or not depends on the simulation. But most of the time these issues do not matter and it can make generating meshes much easier so it can help a lot.