diffusive force -- CFD Online Discussion Forums

May 14, 2005, 16:36	diffusive force	#1
co2 Guest Posts: n/a	Per Fick's law, diffusion mass flux (kg/m2-s) between two points with concentration gradient of species A in a mixture of species A and B is: Mass Diffusivity (m2/s)concentration gradient (kg/m3-m). What is the measure of the diffusive force though? For example, for a certain density difference in the medium, a measure of buoyancy force is gravitational accleration(difference in density) Thus when both diffusive and natural convection forces are in play, how do I decide which one is stronger?

Posting Rules
You may not post new threads You may not post replies You may not post attachments You may not edit your posts BB code is On Smilies are On [IMG] code is On HTML code is Off Trackbacks are Off Pingbacks are On Refbacks are On Forum Rules

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Force can not converge	colopolo	CFX	13	October 4, 2011 23:03
User-defined force transfer across FSI interface	vivekcfd	CFX	7	March 10, 2010 21:43
Urgently Need the code of Lift force and VM force	Kai Yan	Main CFD Forum	0	July 16, 2008 08:07
DEFINE_CG_MOTION and pressure force	Teo Fumagalli	FLUENT	0	April 11, 2008 11:25
pressure force and viscous force	CFD	FLUENT	0	March 7, 2006 02:03

All times are GMT -4. The time now is 16:15.