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Old   September 17, 2006, 21:39
Default Microfluidics
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mh
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Has CFX got microfluidics functionality ?

Also what is the price of the code for university use?
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Old   September 18, 2006, 05:35
Default Re: Microfluidics
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Joe
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Has CFX got microfluidics functionality ?

Yes, its called laminar flow.
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Old   March 16, 2011, 12:54
Default Hi everoyne microfluidic problem
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J_A
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I am runing a microfluidic problem, using a small timestep in a transient simulation. I try the timestep adaptation to have a small numbers of iterations and to have a low courant number about 1, but I expect to have accumulations of one of the fluids, should I set on the conservation target? the courant nuber is about 20 . but with smaller timestep i can obtain around 1 the adaptation dont do nothig becouse i have 1 iteration by loop with the conservation targuet off
Thaks a lot
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Old   March 18, 2011, 07:27
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Glenn Horrocks
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Why are you using Courant number time step adaptation? Generally it is best to adapt to 3-5 coeff loops per iteration.

I do not understand what you are asking.
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Old   March 18, 2011, 10:34
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Quote:
Originally Posted by ghorrocks View Post
Why are you using Courant number time step adaptation?
Hi thanks for your answer, i found a mistake in the convergence criteria, was set on 1e-2 in RMS, so the simulation only do 1 loop per iteration, in the other hand, i whant to have a low courant number, becouse i have been reading that a low courant number is important to obtain a good solution on surface tension problems.
I will try to adapt coeff loop per iteration to see what happen thaks a lot

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Old   March 20, 2011, 22:16
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becouse i have been reading that a low courant number is important to obtain a good solution on surface tension problems.
Correct. It is vital. But that does not mean adaptive timesteps on Courant numebr is the best choice. It just means you need a small timestep and that can be achieved by many other means, and number of iterations is a pretty good thing to try first.
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