Lab on a chip

pejmanpark · April 14, 2010, 20:19

Dear all,

I want to model a simple lab on a chip prototype and I don't know where and how to start. My problem is mostly about how to define Stokes(creeping) flow. Can any of you help me with this? Or send me a tutorial for that?
My email is:
pejman.shoeibi@yahoo.com

All the best,
Pejman

Chris D · April 14, 2010, 23:46

I don't think you need a special model for creeping flow, you can just use the "laminar" viscous model. Then, you'll be solving a viscous problem without a turbulence model, which I think is what you want. Also, I'm not really sure what a "lab on a chip" is.

pejmanpark · April 15, 2010, 05:06

Dear Chris,

Thx for reply. Just one more doubt becuase in most cases the laminar flow model doesn't converge, is it correct if I set the viscosity very high? Is it still creeping flow or not?

Chris D · April 15, 2010, 09:15

I think it would depend on the Reynolds number.

April 14, 2010, 20:19	Lab on a chip	#1
pejmanpark New Member Pejman Sho Join Date: Jul 2009 Posts: 12 Rep Power: 17	Dear all, I want to model a simple lab on a chip prototype and I don't know where and how to start. My problem is mostly about how to define Stokes(creeping) flow. Can any of you help me with this? Or send me a tutorial for that? My email is: pejman.shoeibi@yahoo.com All the best, Pejman

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April 14, 2010, 23:46		#2
Chris D Senior Member Chris Join Date: Jul 2009 Location: Ohio, USA Posts: 169 Rep Power: 17	I don't think you need a special model for creeping flow, you can just use the "laminar" viscous model. Then, you'll be solving a viscous problem without a turbulence model, which I think is what you want. Also, I'm not really sure what a "lab on a chip" is.

April 15, 2010, 05:06		#3
pejmanpark New Member Pejman Sho Join Date: Jul 2009 Posts: 12 Rep Power: 17	Dear Chris, Thx for reply. Just one more doubt becuase in most cases the laminar flow model doesn't converge, is it correct if I set the viscosity very high? Is it still creeping flow or not?

April 15, 2010, 09:15		#4
Chris D Senior Member Chris Join Date: Jul 2009 Location: Ohio, USA Posts: 169 Rep Power: 17	I think it would depend on the Reynolds number.