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DC Field | Value | Language |
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dc.contributor.author | Herlina, H | - |
dc.contributor.author | Wissink, JG | - |
dc.date.accessioned | 2015-01-20T10:54:55Z | - |
dc.date.available | 2014 | - |
dc.date.available | 2015-01-20T10:54:55Z | - |
dc.date.issued | 2014 | - |
dc.identifier.citation | Journal of Fluid Mechanics, 744, pp. 217 - 249, 2014 | en_US |
dc.identifier.issn | 0022-1120 | - |
dc.identifier.uri | http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=9200241&fileId=S0022112014000688 | - |
dc.identifier.uri | http://bura.brunel.ac.uk/handle/2438/9829 | - |
dc.description.abstract | To elucidate the physical mechanisms that play a role in the interfacial transfer of atmospheric gases into water, a series of direct numerical simulations of mass transfer across the air-water interface driven by isotropic turbulence diffusing from below has been carried out for various turbulent Reynolds numbers ( RT=84,195,507). To allow a direct (unbiased) comparison of the instantaneous effects of scalar diffusivity, in each of the DNS up to six scalar advection-diffusion equations with different Schmidt numbers were solved simultaneously. As far as the authors are aware this is the first simulation that is capable to accurately resolve the realistic Schmidt number, Sc=500, that is typical for the transport of atmospheric gases such as oxygen in water. For the range of turbulent Reynolds numbers and Schmidt numbers considered, the normalized transfer velocity KL was found to scale with RT-1/2 and Sc-1/2, which indicates that the largest eddies present in the isotropic turbulent flow introduced at the bottom of the computational domain tend to determine the mass transfer. The KL results were also found to be in good agreement with the surface divergence model of McCready, Vassiliadou & Hanratty (AIChE J., vol. 32, 1986, pp. 1108-1115) when using a constant of proportionality of 0.525. Although close to the surface large eddies are responsible for the bulk of the gas transfer, it was also observed that for higher $R-T$ the influence of smaller eddies becomes more important. © 2014 Cambridge University Press. | en_US |
dc.format.extent | 217 - 249 | - |
dc.format.extent | 217 - 249 | - |
dc.language | eng | - |
dc.language.iso | en | en_US |
dc.publisher | Cambridge University Press | en_US |
dc.subject | Air/sea interactions | en_US |
dc.subject | Computational methods | en_US |
dc.subject | Turbulent mixing | en_US |
dc.title | Direct numerical simulation of turbulent scalar transport across a flat surface | en_US |
dc.type | Article | en_US |
dc.identifier.doi | http://dx.doi.org/10.1017/jfm.2014.68 | - |
dc.relation.isPartOf | Journal of Fluid Mechanics | - |
dc.relation.isPartOf | Journal of Fluid Mechanics | - |
pubs.volume | 744 | - |
pubs.volume | 744 | - |
pubs.organisational-data | /Brunel | - |
pubs.organisational-data | /Brunel/Brunel Staff by College/Department/Division | - |
pubs.organisational-data | /Brunel/Brunel Staff by College/Department/Division/College of Engineering, Design and Physical Sciences | - |
pubs.organisational-data | /Brunel/Brunel Staff by College/Department/Division/College of Engineering, Design and Physical Sciences/Dept of Mechanical, Aerospace and Civil Engineering | - |
pubs.organisational-data | /Brunel/Brunel Staff by College/Department/Division/College of Engineering, Design and Physical Sciences/Dept of Mechanical, Aerospace and Civil Engineering/Mechanical and Aerospace Engineering | - |
pubs.organisational-data | /Brunel/Brunel Staff by Institute/Theme | - |
pubs.organisational-data | /Brunel/Brunel Staff by Institute/Theme/Institute of Energy Futures | - |
pubs.organisational-data | /Brunel/Brunel Staff by Institute/Theme/Institute of Energy Futures/Energy Efficient and Sustainable Technologies | - |
pubs.organisational-data | /Brunel/University Research Centres and Groups | - |
pubs.organisational-data | /Brunel/University Research Centres and Groups/Brunel Business School - URCs and Groups | - |
pubs.organisational-data | /Brunel/University Research Centres and Groups/Brunel Business School - URCs and Groups/Centre for Research into Entrepreneurship, International Business and Innovation in Emerging Markets | - |
pubs.organisational-data | /Brunel/University Research Centres and Groups/School of Health Sciences and Social Care - URCs and Groups | - |
pubs.organisational-data | /Brunel/University Research Centres and Groups/School of Health Sciences and Social Care - URCs and Groups/Brunel Institute for Ageing Studies | - |
pubs.organisational-data | /Brunel/University Research Centres and Groups/School of Health Sciences and Social Care - URCs and Groups/Brunel Institute of Cancer Genetics and Pharmacogenomics | - |
pubs.organisational-data | /Brunel/University Research Centres and Groups/School of Health Sciences and Social Care - URCs and Groups/Centre for Systems and Synthetic Biology | - |
Appears in Collections: | Brunel Design School Research Papers |
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Fulltext.pdf | 2.21 MB | Adobe PDF | View/Open |
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