کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9877644 | 1534088 | 2005 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Interfacial turbulence enhances oxygen transport into shallow liquid layers
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
ریاضیات کاربردی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Transport of oxygen from the gas phase into shallow layers of water and diluted sulfuric acid has been investigated. To this purpose, the temporal evolution of the oxygen concentration in the liquid layers was followed at fixed vertical positions by an oxygen-sensitive electrode. The vertical position of the electrode was varied in 0.1âmm steps. The oxygen concentration profiles were reconstructed from the measured data. As expected, the transport of oxygen into a water layer occurs by diffusion. In contrast, spontaneous interfacial turbulence was found to develop during the transport of oxygen into a shallow layer of sulfuric acid, causing a pronounced deviation from a diffusion profile in a 0.5âmm region underneath the gas/liquid interface. In this topmost layer, surface tension-driven (Marangoni) convection is the dominant transport mechanism, while the bulk liquid layer that extends from 0.5âmm below the interface to the bottom is hydrodynamically quiescent and transport by diffusion prevails.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica D: Nonlinear Phenomena - Volume 205, Issues 1â4, 1 June 2005, Pages 170-180
Journal: Physica D: Nonlinear Phenomena - Volume 205, Issues 1â4, 1 June 2005, Pages 170-180
نویسندگان
Marcus J.B. Hauser, Jana Oberender, Sören Richter, Katrin Bartels, Stefan C. Müller,