Discussion Closed This discussion was created more than 6 months ago and has been closed. To start a new discussion with a link back to this one, click here.
Particle Size Issue for Particle Tracing in COMSOL
Posted 1 févr. 2017, 17:20 UTC−5 Fluid & Heat, Computational Fluid Dynamics (CFD) Version 5.0, Version 5.1, Version 5.2 1 Reply
Please login with a confirmed email address before reporting spam
Hi, everyone.
I am facing an interesting issue in COMSOL : the radius of the particle I wanna trace does not change even I change the radius size/number.
I am simulating a microfluid--droplet ejection. My plan is to see how the droplet moves in the pinch-off process. I am using the node "Particle Tracing" under velocity node. My geometry is in micro scale--the nozzle is 25 um and droplet or fluid is also around 25 um. So I set the radius of the particle is 2.5e-8 m. But as shown in my attached picture, the particle is too big. so I change them into 1e-10 m, however still same size particle is there, nothing change.
I was wonder how this happen. Is there a limit for comsol to represent the particle size?
I am facing an interesting issue in COMSOL : the radius of the particle I wanna trace does not change even I change the radius size/number.
I am simulating a microfluid--droplet ejection. My plan is to see how the droplet moves in the pinch-off process. I am using the node "Particle Tracing" under velocity node. My geometry is in micro scale--the nozzle is 25 um and droplet or fluid is also around 25 um. So I set the radius of the particle is 2.5e-8 m. But as shown in my attached picture, the particle is too big. so I change them into 1e-10 m, however still same size particle is there, nothing change.
I was wonder how this happen. Is there a limit for comsol to represent the particle size?
Attachments:
1 Reply Last Post 1 févr. 2017, 18:46 UTC−5
Please login with a confirmed email address before reporting spam
Posted:
8 years ago
Problem solved by using "Radius scale factor", just setting it to 1