...Yousef M. F. EL Hasadi; J. M. Khodadadi Development of the solid–liquid interface, distribution of the particle concentration field, as well as the development of thermosolutal convection during solidification of colloidal suspensions in a differentially heated cavity are investigated...

... nanoparticles (diameter of 5 and 2 nm) in water was the model NePCM considered. Subject to a 5 °C temperature difference between the hot (top) and cold (bottom) sides and with an initial loading of the nanoparticles equal to 10 wt. % (1.22 vol. %), the colloid was solidified from the bottom. The solid–liquid...

...Liwu Fan; J. M. Khodadadi Highly-conductive nanostructures may be dispersed into phase change materials (PCM) to improve their effective thermal conductivity, thus leading to colloidal systems that are referred to as nanostructure-enhanced PCM (NePCM). Results of a theoretical and experimental...

...Wei Xu; Chang-Hwan Choi In this paper, the evaporation kinetics of microliter-sized sessile droplets of gold colloids (∼250 nm in particle diameters) was experimentally studied on micropatterned superhydrophobic surfaces, compared with those of pure water on a planar hydrophobic surface...

... 2010 06 05 2010 16 11 2010 16 11 2010 alumina colloids cooling flow measurement forced convection laminar to turbulent transitions microchannel flow nanoparticles two-phase flow water nanofluids heat transfer pressure drop turbulence transition...

...). 21 12 2009 02 09 2010 02 11 2010 02 11 2010 colloids lithium compounds nanoparticles percolation potassium compounds scanning electron microscopy silicon compounds specific heat thermal energy storage transmission electron microscopy nanofluid specific heat...

...Magnus Fischer; Damir Juric; Dimos Poulikakos We show that heat transfer in microchannels can be considerably augmented by introducing droplets or slugs of an immiscible liquid into the main fluid flow. We numerically investigate the influence of differently shaped colloidal or simply pure...

... evidences provided in this paper, the key to having an enhanced thermal conductivity lies on the aggregation state and connectivity of the nanoparticles With the current experimental techniques such as neutron scattering, it is possible to characterize the aggregation state in the colloidal state. Once...

... average and standard error of the mean. Not applicable. The thermal conductivity of four sets of identical samples of colloidally stable nanofluids was measured by the participating organizations, using a variety of experimental approaches, including the transient hot wire method, steady...

... enhancement. 14 04 2008 31 07 2008 13 02 2009 alumina boiling colloids diamond heat transfer nanoparticles suspensions water zinc compounds nanofluids critical heat flux flow boiling Nanofluids are dispersions, or colloidal suspensions, of nanoscale particles...

... Transfer 0022-1481 10.1115/1.2150834 , 128 , pp. 240 – 250 . Williams , W. C. , 2007 , “ Experimental and Theoretical Investigation of Transport Phenomena in Nanoparticle Colloids (Nanofluids) ,” Ph.D. thesis, Massachusetts Institute of Technology, Cambridge, MA. Rusconi , R...

...Sung Joong Kim; Thomas McKrell; Jacopo Buongiorno; Lin-Wen Hu Many studies have shown that addition of nanosized particles to water enhances the critical heat flux (CHF) in pool boiling. The resulting colloidal dispersions are known in the literature as nanofluids. However, for most potential...

... on Brownian motion of nanoparticles in the liquid is developed. A general expression for the effective thermal conductivity of a colloidal suspension is derived by using ensemble averaging under the assumption of small departures from equilibrium and the presence of pairwise additive interaction potential...

... at the small volume fractions considered here. 10 08 2005 07 11 2005 convection microfluidics heat conduction Brownian motion nanoparticles colloids two-phase flow particle size thermal conductivity water oils nanofluid nanoscale heat transfer colloid thermal conductivity...

...J. Buongiorno Nanofluids are engineered colloids made of a base fluid and nanoparticles ( 1 - 100 nm ) . Nanofluids have higher thermal conductivity and single-phase heat transfer coefficients than their base fluids. In particular, the heat transfer coefficient increases appear to go beyond...

... process. 04 05 2004 10 01 2005 additives adsorption desorption interface phenomena boiling surfactants surface tension wetting contact angle heat transfer colloids aggregation nucleation bubbles Surfactants have a unique long-chain molecular structure composed...

... chemical reactions molecular weight boiling bubbles surface tension contact angle heat transfer colloids surfactants wetting Additives Enhancement Heat Transfer Interface Phase Change Surface Tension Nucleate boiling is an important thermal management process with a broad...

...Jeffrey B. Hargrove; John R. Lloyd; Clark J. Radcliffe Active control of radiation heat transfer in liquids can be accomplished with the use of a class of fluids referred to here as electro-controllable (EC) fluids. EC fluids in general consist of a colloidal suspension of polarizable, micron-size...