Size of neighbour cells cause to solution error.

March 24, 2006, 03:15

Hi!

I wonder why very good hexa mesh with two neighbour cell regions of very different sizes causes to terrible solution error. For example I have two neighbour layers of cells with heights 1 and 20. And there are non-physic results here.

Any suggestions?

Thanks.

March 24, 2006, 17:48

Look any CFD book for a Taylor series analysis of the error in case of different cell sizes. In my view a jump from 1 to 20 is too much, try reasonable clustering functions, hope that will help

March 27, 2006, 01:38

I'm sure it'll help. Thanks!

March 24, 2006, 03:15	Size of neighbour cells cause to solution error.	#1
Stanislav Kraev Guest Posts: n/a	Hi! I wonder why very good hexa mesh with two neighbour cell regions of very different sizes causes to terrible solution error. For example I have two neighbour layers of cells with heights 1 and 20. And there are non-physic results here. Any suggestions? Thanks.

March 24, 2006, 17:48	Re: Size of neighbour cells lead to solution error	#2
Ahmed Guest Posts: n/a	Look any CFD book for a Taylor series analysis of the error in case of different cell sizes. In my view a jump from 1 to 20 is too much, try reasonable clustering functions, hope that will help

March 27, 2006, 01:38	Re: Size of neighbour cells lead to solution error	#3
Stanislav Kraev Guest Posts: n/a	I'm sure it'll help. Thanks!

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