...-induced Marangoni hydrodynamics of three-layered, immiscible fluid streams in a microchannel is analytically explored. The system is exposed to periodic and sinusoidal thermal stimuli, and a theoretical framework is presented. The diffusion of the periodic thermal stimuli across and along the fluidic...

... and pressure drop characteristics during two phase flow in microchannels. In this paper, a simplified model has been developed for predicting bubble growth rate at nucleation cavity in microchannel. It is assumed that heat supplied at nucleation site is divided between the liquid phase and the vapor phase...

... conditions are similar to the typical conditions under which the classical correlations have been developed. if the goal of the experimental work is to use the data in order to develop a new correlation for the prediction of friction factor or Nusselt number in microchannels only an “a priori” evaluation...

... . Manuscript received December 14, 2011; final manuscript received September 11, 2012; published online August 19, 2013. Assoc. Editor: Sujoy Kumar Saha. 14 12 2011 11 09 2012 Microchannels have well-known applications in cooling because of their ability to handle large quantities of heat...

... the walls and fluid regions, which are often of relevance in microchannels flows. The single domain formulation simultaneously models the heat transfer phenomena at both the fluid stream and the channel walls, by making use of coefficients represented as space variable functions, with abrupt transitions...

...T. P. Lagus; F. A. Kulacki Heat transfer coefficients and bubble motion characteristics are reported for two-phase water flow in an array of 13 equally spaced microchannels over an area of 1 cm 2 . Each channel has D h = 451 ± 38 μm, W/H = 0.8, and L/D h = 22.2. Uniform heat flux is applied through...

...Satish G. Kandlikar As the scale of devices becomes small, thermal control and heat dissipation from these devices can be effectively accomplished through the implementation of microchannel passages. The small passages provide a high surface area to volume ratio that enables higher heat transfer...

... predictive method we can cite the Thome et al. [( 14 )] three zone model for predicting heat transfer in microchannels during the passage of elongated bubbles, Qu and Mudawar [( 22 )] model for annular flow in rectangular multimicrochannels and those of Thome and coworkers for macrochannels [( 23...

...Ting-Yu Lin; Satish G. Kandlikar A model is developed to analyze the effect of axial conduction on heat transfer during single-phase flow in microchannels. The axial heat conduction in the wall introduces heat flow toward the inlet section resulting in an increase in the local fluid temperature...

... ,” Exp. Therm. Fluid Sci. 0894-1777 , 26 , pp. 53 – 64 . 10.1016/S0894-1777(02)00107-3 Thome , J. R. , 2006 , “ State-of-the-Art Overview of Boiling and Two-Phase Flows in Microchannels ,” Heat Transfer Eng. 0145-7632 , 27 , pp. 4 – 19 . 10.1080/01457630600845481 Cavallini...

... transfer performance of pool boiling systems is not adequate to match the cooling ability provided by enhanced microchannels operating under single-phase conditions. The objective of this work is to evaluate the pool boiling performance of structured surface features etched on a silicon chip...

...Satish G. Kandlikar Accurate prediction of critical heat flux (CHF) in microchannels and minichannels is of great interest in estimating the safe operational limits of cooling systems employing flow boiling. Scale analysis is applied to identify the relevant forces leading to the CHF condition...

...W. Escher; T. Brunschwiler; B. Michel; D. Poulikakos We report an experimental investigation of a novel, high performance ultrathin manifold microchannel heat sink. The heat sink consists of impinging liquid slot-jets on a structured surface fed with liquid coolant by an overlying two-dimensional...

...Akhil Agarwal; Srinivas Garimella Condensation pressure drops and heat transfer coefficients for refrigerant R134a flowing through rectangular microchannels with hydraulic diameters ranging from 100 μ m to 200 μ m are measured in small quality increments. The channels are fabricated on a copper...

...Sarada Kuravi; Krishna M. Kota; Jianhua Du; Louis C. Chow Microchannels are used in applications where large amount of heat is produced. Phase change material (PCM) slurries can be used as a heat transfer fluid in microchannels as they provide increased heat capacity during the melting of phase...

...Ping Cheng; Guodong Wang; Xiaojun Quan Recent work on boiling of water and condensation of steam in single and parallel microchannels is reviewed in this paper. It is found that the amplitude and frequency of fluctuations of temperature and pressure during the unstable flow-boiling mode depend...

..., water is the preferred working fluid for temperatures above 50 ° C . 21 01 2008 15 05 2008 20 10 2008 ammonia capillarity confined flow heat pipes heat transfer microchannel flow organic compounds surface tension viscosity water microheat pipes thermal management...

... ,” Rarefied Gas Dynamics: Proceedings of the 19th International Symposium , J. Harvey and G. Lord , eds., Oxford, pp. 347 – 353 . 31 07 2006 04 04 2007 17 03 2008 Couette flow heat transfer microchannel flow pipe flow rotational flow heat transfer...

...Dong Liu; Suresh V. Garimella Flow boiling heat transfer to water in microchannels is experimentally investigated. The dimensions of the microchannels considered are 275 × 636 and 406 × 1063 μ m 2 . The experiments are conducted at inlet water temperatures in the range of 67 – 95 ° C and mass...

...C. Nonino; S. Del Giudice; S. Savino The effects of viscous dissipation and temperature dependent viscosity in simultaneously developing laminar flows of liquids in straight microchannels are studied with reference to convective boundary conditions. Two different geometries, namely the circular...