Learning Forum

[nhoei17]

Hi, I am having some trouble with a microfluidic simulation. The goal is to create a simulation based on our microfluidic channel design that will track the particle movement parttern within the channel, but i am having trouble figuring out the correct parameters to set for the particle injection to work. Currently I am working on simulating particle tracking based on a simple 2D configuration of the channel by somewhat following the example of this video, https://www.youtube.com/watch?v=OJ5YJl6In6A. 

But a lot is different from my model as the dimensions are much smaller (300x1000um), and the fluid surrounding the particles are water. Is there some kind of guide for ANSYS simulation in microfluidics that could help?

 

Hope some of you could help?... 

[Amine Ben Hadj Ali]

no real guide here but are you particles affecting the flow? At your scale random motion and thermoporetic forces will dominate over drag as I assume you particles are in nano to low microns range.

I guess it's better if you assume a surrogate fluid with adjusted properties which reflects the particle concentration

[nhoei17]

Hey Amine

That for your reply.

I have found some-what of a guide to what I need, im trying to determine the particle migration of bacteria by the use of shear gradient and lift forces. The "guide" i found decribed how to simulate the inertial focusing of particles of different sizes (1 - 10um) within a pipe. This is done by adding a UDF functionality

https://open.library.ubc.ca/cIRcle/collections/ubctheses/24/items/1.0166953

Thanks for the help

Kind regards 

Nikolai Høiland