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Keywords: microchannels
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Proceedings Papers

Proc. ASME. ICNMM2019, ASME 2019 17th International Conference on Nanochannels, Microchannels, and Minichannels, V001T07A002, June 23–26, 2019
Paper No: ICNMM2019-4284
...FLOW MALDISTRIBUTION EFFECTS ON THE TEMPERATURE UNIFORMITY IN DOUBLE-LAYERED MICROCHANNEL HEAT SINKS Carlo Nonino*, Stefano Savino Dipartimento Politecnico di Ingegneria e Architettura Universita` degli Studi di Udine Via delle Scienze 206, 33100 Udine, Italy Email: carlo.nonino@uniud.it ABSTRACT...
Proceedings Papers

Proc. ASME. ICNMM2012, ASME 2012 10th International Conference on Nanochannels, Microchannels, and Minichannels, 411-417, July 8–12, 2012
Paper No: ICNMM2012-73199
... Pressure drop through micro-pillar-integrated mini/microchannels is studied experimentally and analytically. Following our previous studies, the low aspect ratio micropillars embedded in a microchannel are modeled as a porous medium sandwiched between channel walls. The pressure drop...
Proceedings Papers

Proc. ASME. ICNMM2011, ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, Volume 2, 615-628, June 19–22, 2011
Paper No: ICNMM2011-58294
...Proceedings of the ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels ICNMM2011-58294 June 19-22, 2011 Edmonton, Alberta, CANADA GENERALIZED MODELS FOR LAMINAR DEVELOPING FLOWS IN HEAT SINKS AND HEAT EXCHANGERS Y. S. Muzychka Memorial University of Newfoundland...
Proceedings Papers

Proc. ASME. ICNMM2011, ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, Volume 2, 393-404, June 19–22, 2011
Paper No: ICNMM2011-58085
... 14 05 2012 A simple approach for calculating the interfacial component of frictional pressure gradient in two-phase flow in microchannels and minichannels is presented. This approach is developed using superposition of three pressure gradients: single-phase liquid, single-phase gas...
Proceedings Papers

Proc. ASME. ICNMM2011, ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, Volume 1, 455-462, June 19–22, 2011
Paper No: ICNMM2011-58037
... 14 05 2012 For practical microchannel applications involving convective heat transfer, the flows are usually, not only laminar, they are also simultaneously developing in nature. Moreover, flat plate substrates with microchannels engraved/ machined or etched on them are emerging as one...
Proceedings Papers

Proc. ASME. ICNMM2011, ASME 2011 9th International Conference on Nanochannels, Microchannels, and Minichannels, Volume 1, 305-317, June 19–22, 2011
Paper No: ICNMM2011-58040
... 14 05 2012 Gaseous flow in circular and noncircular microchannels has been examined and a simple analytical model with second-order slip boundary conditions for normalized Poiseuille number is proposed. The model is applicable to arbitrary length scale. It extends previous studies...
Proceedings Papers

Proc. ASME. ICNMM2010, ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels: Parts A and B, 85-94, August 1–5, 2010
Paper No: FEDSM-ICNMM2010-30218
... Microchannels Two-phase Flow patterns Heat Transfer visualization In this paper, the experimental flow boiling visualization results of a microchannel are presented and discussed. A series of visualization experiments have been conducted in a horizontal, circular, uniformly heated...
Proceedings Papers

Proc. ASME. ICNMM2010, ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels: Parts A and B, 421-431, August 1–5, 2010
Paper No: FEDSM-ICNMM2010-30320
... Copyright © 2010 by ASME 1 Proceedings of ASME 2010 3rd Joint US-European Fluids Engineering Summer Meeting and 8th International Conference on Nanochannels, Microchannels, and Minichannels FEDSM2010-ICNMM2010 August 2-4, 2010, Montreal, Canada FEDSM-ICNMM2010-30320 Models for Gaseous Slip Flow...
Proceedings Papers

Proc. ASME. ICNMM2010, ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels: Parts A and B, 1629-1638, August 1–5, 2010
Paper No: FEDSM-ICNMM2010-30276
... of non-circular ducts, pressure drop and heat transfer in meandering microtubes and microchannels for both of gas-liquid and liquid-liquid two-phase flows. Numerical simulation slug flow two-phase flow microtubes microchannels pressure drop heat transfer 1 Copyright © 2010 by ASME...
Proceedings Papers

Proc. ASME. ICNMM2008, ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels, 299-306, June 23–25, 2008
Paper No: ICNMM2008-62134
... 11 06 2009 In the present paper, three different methods for two-phase flow modeling in microchannels and minichannels are presented. They are effective property models for homogeneous two-phase flows, an asymptotic modeling approach for separated two-phase flow, and bounds on two...
Proceedings Papers

Proc. ASME. ICNMM2007, ASME 5th International Conference on Nanochannels, Microchannels, and Minichannels, 427-433, June 18–20, 2007
Paper No: ICNMM2007-30109
... 08 06 2009 The shape of microchannels is an important design variable to achieve the desired performance. Since most microchannels are, at present, designed by trial and error, a systematic optimal shape design method needs to be established. Computational fluid dynamics (CFD) is often...
Proceedings Papers

Proc. ASME. ICMM2005, ASME 3rd International Conference on Microchannels and Minichannels, Part B cont’d, 657-665, June 13–15, 2005
Paper No: ICMM2005-75071
... are connected by a diffusion bonding process to form a nearly monolithic body. The number of integrated microchannels is in the order of several hundreds to several thousands. This internal numbering-up leads to a sufficiently low pressure drop. The devices have an extremely high heat transfer to volume ratio...
Proceedings Papers

Proc. ASME. ICMM2005, ASME 3rd International Conference on Microchannels and Minichannels, Part B cont’d, 31-39, June 13–15, 2005
Paper No: ICMM2005-75097
... 19 11 2008 Arrays of 68 microchannels, each one 200 μm wide, 100 μm deep and 40 mm long, were fabricated by mechanical micro-machining of brass foils, and used to evaporate water in the mass flux range between 61 kg m −2 s −1 and 123kg m −2 s −1 in an electrically powered device...
Proceedings Papers

Proc. ASME. ICMM2005, ASME 3rd International Conference on Microchannels and Minichannels, Parts A and B, 709-715, June 13–15, 2005
Paper No: ICMM2005-75261
... 19 11 2008 In this paper we present a first order study of liquid water detachment and entrainment into air flows in hydrophobic microchannels. A silicon based microfabricated test structure was used for this purpose. It consists of a 500 μm wide by 45 μm deep U-shaped channel 23 mm...
Proceedings Papers

Proc. ASME. ICMM2005, ASME 3rd International Conference on Microchannels and Minichannels, Parts A and B, 49-58, June 13–15, 2005
Paper No: ICMM2005-75085
... 19 11 2008 Industrial trends are presenting major challenges and opportunities for research on two-phase flows in microchannels. Semiconductor companies are developing 3D circuits, for which multilevel microfluidic cooling is important. Gas delivery microchannels are promising for PEM...
Proceedings Papers

Proc. ASME. ICNMM2006, ASME 4th International Conference on Nanochannels, Microchannels, and Minichannels, Parts A and B, 1165-1172, June 19–21, 2006
Paper No: ICNMM2006-96189
... 15 09 2008 Pulsation and maldistribution effects (hot spot formation) with characteristic frequencies below 100 Hz occurring in electrically powered microchannel array heat exchangers used as evaporators for water were investigated primarily with the aid of visualisation techniques...
Proceedings Papers

Proc. ASME. ICNMM2006, ASME 4th International Conference on Nanochannels, Microchannels, and Minichannels, Parts A and B, 177-184, June 19–21, 2006
Paper No: ICNMM2006-96190
.... The integration of this class of nanostructured material into devices by means of microchannels is a promising novel approach to, among others, substance separation in analytics, micro process engineering, and micro chemistry. multiscale devices adsorption periodic mesoporous organosilica microchannels...