...Jyoti Pandey; Mohd. Zahid Ansari; Afzal Husain This study experimentally investigated the hydrothermal and overall performance of the microchannel heat sink incorporating the jet impingement technique. Later on, a numerical model is developed using the finite volume-based tool fluent...

...Mark Schepperle; Nima Samkhaniani; Mirco Magnini; Peter Woias; Alexander Stroh Facing discrepancies between numerical simulation, experimental measurement, and theory is common in studies of fluid flow and heat transfer in microchannels. The cause of these discrepancies is often linked...

... changes. e-mail:  dcmoreira@usp.br e-mail:  ribatski@sc.usp.br 1 Corresponding author. e-mail:  sgkeme@rit.edu 28 09 2021 09 04 2022 11 05 2022 liquid cooling microchannel developing flow The development of novel electronic devices with high processing...

...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...

.... Furthermore, 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...

... in electroosmotic flow through rectangular microchannels, having potential applications in LOC devices. Along this line, the power-law rheological model is used to account for non-Newtonian behavior of the common biofluids encountered in these devices. A mixed type of thermal boundary condition is employed...

..., noncondensable gas bubbles were introduced upstream of a 1 mm × 1 mm heater into a 220  μ m deep and a 1.5 mm wide microchannel and the heat transfer coefficient was measured and compared to single-phase liquid flow. High speed imaging and micro particle image velocimetry (μ-PIV) measurements were used...

..., 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...

... of synthetic jets on stabilizing flow boiling instabilities in parallel microchannels, tests are performed for the following four cases: (1) base case test with microchannel heat sink only; (2) test with synthetic jets; (3) modified design: synthetic jets with larger orifices; (4...

... 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...

... perturbation of the diameter of a circular microchannel on the predictions made by the selected criteria, and seeks to demonstrate an optimum rate of expansion. It is demonstrated that a nonzero diameter expansion necessarily improves performance under several criteria for critical heat flux, and an optimum...