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Modeling magnetic nano-particles in a fluid

Posted 16 set 2010, 09:33 GMT-4 Fluid & Heat, Microfluidics, Chemical Reaction Engineering, Materials Version 4.3b 2 Replies

Ori Cohen
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Hi all,

We wants to model magnetic nano-particles in a fluid (fluid velocity is 0).

We don't know which model to choose in the model navigator, and how to create a nano-particles.

Thanks
2 Replies Last Post 22 ago 2014, 16:00 GMT-4
COMSOL Moderator

Hello Ori Cohen

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Atiye Yousefi
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Posted: 1 decade ago 24 lug 2013, 05:53 GMT-4
Hi Ori
I'm modeling cancer treatment with magnetic nano particles in comsol, and I'm having the same problem you had.
I was wondering if you'd found out what model to use, I'd be glad if I receive your answer

Thanks a lot.

Atiye Yousefi
Hi Ori I'm modeling cancer treatment with magnetic nano particles in comsol, and I'm having the same problem you had. I was wondering if you'd found out what model to use, I'd be glad if I receive your answer Thanks a lot. Atiye Yousefi
Saeid Movahed
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Posted: 1 decade ago 22 ago 2014, 16:00 GMT-4
Hi, I have the same problem as yours. I want to simulate the concentration variation of nano-particle in a micro-fluid channel under magnetic field, I have built a modeling including transport of diluted species , laminar flow and magnetic field . I want to solve step1: stationary magnetic field and then step2: time dependent laminar flow and transport of diluted species. step1 solved good but I have an error in step2 . Nonlinear solver did not converge.
Maximum number of Newton iterations reached.
There was an error message from the linear solver.
The relative residual (0.33) is greater than the relative tolerance.
Time : 0
Last time step is not converged.
Anyone got a solution?
Hi, I have the same problem as yours. I want to simulate the concentration variation of nano-particle in a micro-fluid channel under magnetic field, I have built a modeling including transport of diluted species , laminar flow and magnetic field . I want to solve step1: stationary magnetic field and then step2: time dependent laminar flow and transport of diluted species. step1 solved good but I have an error in step2 . Nonlinear solver did not converge. Maximum number of Newton iterations reached. There was an error message from the linear solver. The relative residual (0.33) is greater than the relative tolerance. Time : 0 Last time step is not converged. Anyone got a solution?

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