Question about fluid-solid conduction heat transfer contact resistance

Anna Tian · May 6, 2013, 19:12

Hi,

May I ask is there also a conduction contact resistance for flow-solid conduction heat transfer like solid-solid conduction heat transfer? Or since there is no gas between fluid-solid, the contact resistance is 0?

triple_r · May 7, 2013, 10:39

It depends on how clean the surface is. Also, if there is a thin layer on the solid surface (oxidization, paint, chrome coating, ...) that cannot be modeled explicitly for cheap, then you might want to use a contact resistance.

May 6, 2013, 19:12	Question about fluid-solid conduction heat transfer contact resistance	#1
Anna Tian Senior Member Shoushou Tian Join Date: Jul 2012 Posts: 193 Rep Power: 2	Hi, May I ask is there also a conduction contact resistance for flow-solid conduction heat transfer like solid-solid conduction heat transfer? Or since there is no gas between fluid-solid, the contact resistance is 0? __________________ Best regards, Shoushou

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May 7, 2013, 10:39		#2
triple_r Member Reza Join Date: Mar 2009 Location: Appleton, WI Posts: 49 Rep Power: 6	It depends on how clean the surface is. Also, if there is a thin layer on the solid surface (oxidization, paint, chrome coating, ...) that cannot be modeled explicitly for cheap, then you might want to use a contact resistance.