Jacqueline Barber
University of Edinburgh
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Featured researches published by Jacqueline Barber.
Nanoscale Research Letters | 2011
Jacqueline Barber; David Brutin; Lounes Tadrist
There has been increasing interest of late in nanofluid boiling and its use in heat transfer enhancement. This article covers recent advances in the last decade by researchers in both pool boiling and convective boiling applications, with nanofluids as the working fluid. The available data in the literature is reviewed in terms of enhancements, and degradations in the nucleate boiling heat transfer and critical heat flux. Conflicting data have been presented in the literature on the effect that nanofluids have on the boiling heat-transfer coefficient; however, almost all researchers have noted an enhancement in the critical heat flux during nanofluid boiling. Several researchers have observed nanoparticle deposition at the heater surface, which they have related back to the critical heat flux enhancement.
ASME 2008 6th International Conference on Nanochannels, Microchannels, and Minichannels | 2008
Jacqueline Barber; Khellil Sefiane; David Brutin; Lounes Tadrist
Boiling in microchannels remains elusive due to the lack of full understanding of the mechanisms involved. A powerful tool in achieving better comprehension of the mechanisms is detailed imaging and analysis of the two phase flow at a fundamental level. We induced boiling in a single microchannel geometry (hydraulic diameter 727 μm), using a refrigerant FC-72, to investigate several flow patterns. A transparent, metallic, conductive deposit has been developed on the exterior of rectangular microchannels, allowing simultaneous uniform heating and visualisation to be conducted. The data presented in this paper is for a particular case with a uniform heat flux of 4.26 kW/m2 applied to the microchannel and inlet liquid mass flowrate, held constant at 1.33×10−5 kg/s. In conjunction with obtaining high-speed images and videos, sensitive pressure sensors are used to record the pressure drop profiles across the microchannel over time. Bubble nucleation, growth and coalescence, as well as periodic slug flow, are observed in the test section. Phenomena are noted, such as the aspect ratio and Reynolds number of a vapour bubble, which are in turn correlated to the associated pressure drops over time. From analysis of our results, images and video sequences with the corresponding physical data obtained, it is possible to follow visually the nucleation and subsequent both ‘free’ and ‘confined’ growth of a vapour bubble over time.Copyright
Applied Thermal Engineering | 2009
Jacqueline Barber; Khellil Sefiane; David Brutin; Lounes Tadrist
Experimental Thermal and Fluid Science | 2010
Jacqueline Barber; David Brutin; Khellil Sefiane; Lounes Tadrist
International Journal of Heat and Mass Transfer | 2011
Jacqueline Barber; David Brutin; Khellil Sefiane; Jean-Laurent Gardarein; Lounes Tadrist
2nd Micro and Nano Flows Conference, MNF2009 | 2009
Yuan Wang; Khellil Sefiane; Jacqueline Barber; Stephen Wilson
ASME 2007 5th International Conference on Nanochannels, Microchannels, and Minichannels | 2007
Jacqueline Barber; Khellil Sefiane; David Brutin; L. Tadrist
Bulletin of the American Physical Society | 2010
Jacqueline Barber; David Brutin; Lounes Tadrist
Archive | 2009
Yuan Wang; Khellil Sefiane; Jacqueline Barber; Sarah Wilson
6th International Conference on Nanochannels, Microchannels, and Minichannels | 2008
Jacqueline Barber; Khellil Sefiane; David Brutin; Lounes Tadrist