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1-D modelling and 3-D simulation of confined bubble formation and formation and pressure fluctuations during flow boiling in a microchannel with a rectangular cross-section of high aspect ratio

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dc.creator Gedupudi, S
dc.creator Zu, YQ
dc.creator Karayiannis, TG
dc.creator Kenning, DBR
dc.creator Yan, YY
dc.date 2012-04-23T11:46:27Z
dc.date 2012-04-23T11:46:27Z
dc.date 2009
dc.date.accessioned 2022-05-25T14:03:46Z
dc.date.available 2022-05-25T14:03:46Z
dc.identifier In Proceedings of the 7th International ASME Conference on Nanochannels, Microchannels and Minichannels, Pohang, South Korea: 1087 - 1094, June 22-24, 2009
dc.identifier 978-0-7918-4349-9
dc.identifier http://bura.brunel.ac.uk/handle/2438/6399
dc.identifier http://dx.doi.org/10.1115/ICNMM2009-82119
dc.identifier.uri http://localhost:8080/xmlui/handle/CUHPOERS/169228
dc.description Copyright @ 2009 ASME
dc.description A simple 1-D model with low requirements for computing time is required to investigate parametric influences on the potentially adverse effects of pressure fluctuations driven by confined vapour bubble growth in microchannel evaporative cooling systems operating at high heat fluxes. A model is developed in this paper for the particular conditions of a channel of rectangular cross-section with high aspect ratio with a constant inlet flow rate (zero upstream compressibility). (The model will later be extended to the conditions of finite upstream compressibility that lead to transient flow reversal). Some parametric trends predicted by the model are presented. The simplifying assumptions in the model are examined in the light of a 3-D simulation by a commercial CFD code, described in an accompanying paper by the same authors. The predictions of pressure changes are in reasonable agreement. It is suggested that the 1-D model will be a useful design tool.
dc.description This work is supported by the UK Engineering and Physical Sciences Research Council (EPSRC) under grants EP/D500095/1 and EP/D500125/1.
dc.language en
dc.publisher ASME
dc.title 1-D modelling and 3-D simulation of confined bubble formation and formation and pressure fluctuations during flow boiling in a microchannel with a rectangular cross-section of high aspect ratio
dc.type Conference Paper


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