How to make 2d mesh for this problem?

doctsh · January 14, 2011, 07:47

Hi everyone.

I have to solve a problem of a swimmer with two paddles and body. It is a two dimensional problem. This three linked swimmer swimming in highly viscous liquid by beating its wings.

How to create mesh for this?

Please some one help me..
Thanks in advance

PSYMN · January 15, 2011, 15:19

I don't have any experience with this sort of mesh morphing, but I hope you get the help you need.

However, I really don't think you can make this work with only three links... In theory, I think you would need at least 5 links to prevent the return motion from just pushing your swimmer backward again... Unless maybe you had some sort of sawtooth skin that would resist the pushback, but allow the push forward...

I am pretty interested to see how this turns out.

doctsh · January 15, 2011, 20:45

Thanks PSYMN for ur reply.
I understand your concern regarding reciprocal motion. This is what "scallop theorem" deals with. This motion is possible only in very low reynolds number where there is no inertia.
My problem is making mesh suitable for this swimmer.
My experience with meshing and geometry is very less. I request someone to guide me.

January 14, 2011, 07:47	How to make 2d mesh for this problem?	#1
doctsh Member s Kumar Join Date: Jul 2009 Posts: 50 Rep Power: 16	Hi everyone. I have to solve a problem of a swimmer with two paddles and body. It is a two dimensional problem. This three linked swimmer swimming in highly viscous liquid by beating its wings. How to create mesh for this? Please some one help me.. Thanks in advance

January 15, 2011, 20:45		#3
doctsh Member s Kumar Join Date: Jul 2009 Posts: 50 Rep Power: 16	Thanks PSYMN for ur reply. I understand your concern regarding reciprocal motion. This is what "scallop theorem" deals with. This motion is possible only in very low reynolds number where there is no inertia. My problem is making mesh suitable for this swimmer. My experience with meshing and geometry is very less. I request someone to guide me. Last edited by doctsh; January 15, 2011 at 23:48.

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January 15, 2011, 15:19		#2
PSYMN Senior Member Simon Pereira Join Date: Mar 2009 Location: Ann Arbor, MI Posts: 2,663 Blog Entries: 1 Rep Power: 47	I don't have any experience with this sort of mesh morphing, but I hope you get the help you need. However, I really don't think you can make this work with only three links... In theory, I think you would need at least 5 links to prevent the return motion from just pushing your swimmer backward again... Unless maybe you had some sort of sawtooth skin that would resist the pushback, but allow the push forward... I am pretty interested to see how this turns out.