nanofluid turbulent flows

ezlidor_shb · January 31, 2014, 11:38

Hello everyone, I’d like to investigate nanofluid turbulent flows inside tubes.
1) Are the standard or scalable turbulence wall functions suitable for nanofluid flows? If they are not, what do you suggest I do?
2) Can thermophoretic force be neglected? Because the temperature gradient of the silver nanoparticles (with high thermal conductivity) is very little.
3) Can Brownian motion be neglected? Because of the fact that the diffusion speed of the Kolmogorov turbulence is much faster than that of the Brownian motion?
Any help would be appreciated. Thanks.

FMDenaro · January 31, 2014, 12:07

what about the Kolmogorov length in your problem? I am not sure you can have a real turbulent field due to the law scales in microfluidic...

January 31, 2014, 11:38	nanofluid turbulent flows	#1
ezlidor_shb New Member hesam Join Date: Dec 2013 Posts: 9 Rep Power: 12	Hello everyone, I’d like to investigate nanofluid turbulent flows inside tubes. 1) Are the standard or scalable turbulence wall functions suitable for nanofluid flows? If they are not, what do you suggest I do? 2) Can thermophoretic force be neglected? Because the temperature gradient of the silver nanoparticles (with high thermal conductivity) is very little. 3) Can Brownian motion be neglected? Because of the fact that the diffusion speed of the Kolmogorov turbulence is much faster than that of the Brownian motion? Any help would be appreciated. Thanks.

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January 31, 2014, 12:07		#2
FMDenaro Senior Member Filippo Maria Denaro Join Date: Jul 2010 Posts: 6,830 Rep Power: 73	what about the Kolmogorov length in your problem? I am not sure you can have a real turbulent field due to the law scales in microfluidic...