... Enhancement Techniques in Microchannel and Minichannel Flows ,” International Conference on Nanochannels Microchannels and Minichannels , Rochester, NY, June 17–19, pp. 141 – 148 . 10.1115/ICMM2004-2328 [3] Lu , S. , and Vafai , K. , 2016 , “ A Comparative Analysis of Innovative...

...Yuhao Lin; Junye Li; Jia Sun; Wei Li; Yanlong Cao The combination of microstructured surface and microchannel flow boiling is expected to solve the thermal management problems of high-heat-flux devices. In this study, the experimental investigation of subcooled flow boiling in a high aspect ratio...

...Yuhao Lin; Junye Li; Jia Sun; Wei Li; Yanlong Cao To explore the effect of microstructured porous surface on enhancing the heat transfer of flow boiling in a microchannel, the microporous copper surface was fabricated with microscale pores in ranges of 1–5 μ m, which presented super-hydrophobicity...

...Houpei Li; Pega Hrnjak This paper presents the heat transfer coefficient, pressure gradient, and flow pattern of R1234yf in a microchannel tube. Both heat transfer coefficient and pressure gradient are presented against real saturation pressure, while flow pattern captures at the exit of data...

...Wei Li; Junye Li; Kan Zhou; Hua Zhu; Zhengjiang Zhang; Jincai Du In this short paper, the method of analyzing microchannel flow boiling phenomena by the image processing tool was briefly introduced. The experiments of subcooled and saturated flow boiling on various micro-/nanostructured modified...

... transfer PEC as an evaluation parameter, numerical simulation, and multi-island genetic algorithm are combined to optimize the shape of the dimple in microchannel under fully developed laminar condition. The results show that the optimal dimple is asymmetric along the flow direction, and the deepest...

...Junye Li; Yuhao Lin; Wei Li; Kan Zhou An experimental study of saturated flow boiling in a high-aspect-ratio one-side-heating rectangular microchannel was conducted with de-ionized water as the working fluid. ZnO microrods with the average diameter of about 1 μ m and length of about 7 μ m were...

...Ali Alipour Lalami; Hamid Hassanzadeh Afrouzi; Abouzar Moshfegh; Mohammad Omidi; Ashkan Javadzadegan In this paper, effect of Joule heating (JH), viscous dissipations (VD), and super hydrophobic surfaces on heat transfer of water–Al 2 O 3 and water–CuO nanofluids in a microchannel has been...

...Sunil K. Dwivedi; Sandip K. Saha This experimental study on rhombic shaped microchannels was conducted to understand the effect of a low acute side angle on the Nusselt number and compare the results with the published numerical results for H1 (axially constant heat flux and circumferentially...

...Zhi Tao; Zhibing Zhu; Haiwang Li This paper attempts to experimentally investigate the influence of channel length on the flow behavior and heat transfer characteristics in circular microchannels. The diameters of the channels were 0.4 mm and the length of them were 5 mm, 10 mm, 15 mm, and 20 mm...

... density. In this study, flow boiling was investigated using water and nanofluids in a single rectangular microchannel at different heat fluxes. The observed change in flow regime transition revealed the effect of nanoparticles on the onset of nucleate boiling (ONB) and the onset of bubble elongation (OBE...

..., the pressure drop of the H2 case is found to be higher than that obtained by assuming an H1 thermal boundary condition. microchannel mixed convection slip flow temperature jump Knudsen number During the last two decades, the improvements in microfabrication techniques have led...

... velocity to find the volumetric flow rate of viscoelastic electroosmotic flows through microchannels. In addition, they also reported a numerical study on viscoelastic electroosmotic flows through a rectangular microchannel with and without pressure gradient [ 21 ]. The electroosmotic flow of viscoelastic...

... Transfer on Micro Pin Fins Entrenched in a Microchannel ,” ASME J. Heat Transfer , 132 ( 4 ), p. 041007 . 10.1115/1.4000878 [3] Basu N. , Warrier G. R. , and Dhir V. K. , 2005 , “ Wall Heat Flux Partitioning During Subcooled Flow Boiling: Part 1—Model Development ,” ASME J. Heat...

..., 2013. Assoc. Editor: Patrick E. Phelan. 21 11 2011 06 04 2013 An experimental investigation of heat and mass transfer in a falling-film absorber with microchannel tube arrays was conducted. Liquid ammonia–water solution flows in a falling-film mode around an array of small diameter...

...Ruixian Fang; Jamil A. Khan As a consequence, the modified design allows bubbles to be condensed inside the jet cavity rather than inside the microchannels only. As shown in Fig. 19 , bubbles are sucked into the jet cavity through the orifices. After that bubbles are effectively condensed...

... by Balasubramanian et al. (though not in continuously expanding channels) [ 15 ], further considered by the present authors and colleagues [ 19 ], and shown in Fig. 1 . Expanding the microchannel cross-section along the flow direction produced favorable results on CHF in simulation and experiment, but the question...

... of a microchannel fluid flow and (ii) for the optimum design of thermal systems which includes convective heat transfer in a microchannel especially operating at low Reynolds numbers. microchannel Knudsen number second-order slip model thermal creep With the today's fabrication facility...

... consisted of a microchannel (MC) plate, with groove widths of 100 and 300 μm, wick (metal and nonmetal porous materials were used) and a compensation chamber (CC). Heat load varied from 20 to 140 W in steps of 20 W. The area of the heater was equal to 19 × 19 mm 2 . The working fluid is de-ionized water...

... Editors: G. P. “Bud” Peterson and Zhuomin Zhang. 26 06 2012 26 01 2013 The paper reports calculations of friction pressure gradient for the special case of laminar annular flow condensation in microchannels. This is the only flow regime permitting theoretical solution without having...