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a formula for inlet velocity field

Posted Aug 8, 2011, 1:24 a.m. EDT Fluid & Heat Version 4.1 1 Reply

Zhi Chengyang
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Hi,
everyone.
In comsol 4.1 there is a model about ICP plasma.In the 'Laminar Flow 'physic?there is a formula setted for the inlet velocity field:
(1-(1-s)^2)*20*tanh(1E5*t)
,in this case, what does the "s" means?
Thank you!
1 Reply Last Post Aug 8, 2011, 9:47 a.m. EDT
Zhi Chengyang
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Posted: 1 decade ago Aug 8, 2011, 9:47 a.m. EDT

Hi,
everyone.
In comsol 4.1 there is a model about ICP plasma.In the 'Laminar Flow 'physic?there is a formula setted for the inlet velocity field:
(1-(1-s)^2)*20*tanh(1E5*t)
,in this case, what does the "s" means?
Thank you!


I know it now.''s" means the distance measured fron the starting point in the boundary.The starting point you can distinguish fron the arrow of the boundary line.
[QUOTE] Hi, everyone. In comsol 4.1 there is a model about ICP plasma.In the 'Laminar Flow 'physic?there is a formula setted for the inlet velocity field: (1-(1-s)^2)*20*tanh(1E5*t) ,in this case, what does the "s" means? Thank you! [/QUOTE] I know it now.''s" means the distance measured fron the starting point in the boundary.The starting point you can distinguish fron the arrow of the boundary line.

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