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using step function in mass transfer

Posted Apr 17, 2014, 2:52 p.m. EDT 0 Replies

Mohammad Jaber Darabi Mahboub
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Dear Sir/Madame:

I have a question about using step function. I have a droplet which contains some materials (for example A and B) which they evaporat to atmosphere. The amonut of diffution coefficients are different in and out of the droplet.
I want to know how I can define a step function for Diffusion Coefficient?
for example for specie A the amount of D= 32.23e-10 in droplet and D=8.5e-6 in atmosphere.

I will be thankful if you help me.
Thanks a lot in advance.
Jaber
0 Replies Last Post Apr 17, 2014, 2:52 p.m. EDT
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Hello Mohammad Jaber Darabi Mahboub

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