Transport across a turbulent air-water interface

Autor:	C. N. S. Law, B. C. Khoo
Rok vydání:	2002
Předmět:	Work (thermodynamics) Environmental Engineering Meteorology Chemistry Turbulence K-epsilon turbulence model General Chemical Engineering Turbulence modeling Mechanics K-omega turbulence model Physics::Fluid Dynamics Flow conditions Wind shear Mass transfer Biotechnology
Zdroj:	AIChE Journal. 48:1856-1868
ISSN:	1547-5905 0001-1541
DOI:	10.1002/aic.690480904
Popis:	Turbulence structure in the immediate vicinity of the air–water interface has a dominant influence on the mass transfer across it. In this work, investigations on near-surface turbulence and mass-transfer rate were carried out for two distinct flow conditions: one with turbulence generated from beneath the interface, the other via wind shear from above the interface. Turbulence measurement with respect to the fluctuating interface was performed and Hanratty's β, the gradient of the linear variation of vertical velocity at the interface, was quantified. It is found that incorporating a near-surface turbulence parameter such as β provides a reasonable model for interfacial mass transfer, applicable to the two vastly different flow conditions studied.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::50d9b6a2133a917e32e75324b985cc95 https://doi.org/10.1002/aic.690480904 Zobrazit plný text záznamu Plný text