The Effects of Bubbles on Mass Transfer Across the Breaking Air‐Water Interface
The Effects of Bubbles on Mass Transfer Across the Breaking Air‐Water Interface
复制标题
气泡对空气-水破裂界面传质的影响
DOI：
10.1029/gm127p0285
复制
发表时间：
2000
期刊：
影响因子：
--
通讯作者：
R. Misumi
中科院分区：
文献类型：
--
作者：
S. Komori;R. Misumi
通过实验和数值研究了波浪破碎夹带到水中的气泡对风驱动湍流中的传质的影响。使用激光多普勒测速仪（LDV）和相位多普勒风速计（PDA）测量气泡夹带速率和气泡与液体之间的相对速度。结果表明，气泡夹带率随风速呈线性增加，风驱动湍流中的相对速度小于静水中气泡的上升速度。此外，通过直接数值模拟（DNS）在较宽的粒子雷诺数（0.1lRepl300）范围内估计气泡的传质速度。 DNS 结果表明，气泡的传质系数取决于 Rep，而不取决于环境流动结构。研究还发现，在风驱动的湍流中，总气泡对穿过破碎空气-水界面的总传质的贡献最多为7%。
The effects of bubbles entrained into water by wave breaking on the mass transfer in wind-driven turbulence were experimentally and numerically investigated. The bubble entrainment rate and relative velocity between a bubble and liquid were measured using both a laser Doppler velocimeter (LDV) and a phase Doppler anemometer (PDA). The results show that the bubble entrainment rate increases linearly against wind speed and the relative velocity in wind-driven turbulence is smaller than the raising velocity of a bubble in the quiet water. Further, the mass transfer velocity for a bubble was estimated by means of a direct numerical simulation (DNS) over the wide range of the particle Reynolds number (0.1lRepl300). The DNS results show that the mass transfer coefficient for a bubble depends on Rep but not on the ambient flow structure. It is also found that the contribution of the total bubbles to the total mass transfer across the breaking air-water interface is at most 7% in wind-driven turbulence.
影响因子：
3.7
作者：
KOMORI, S;NAGAOSA, R;MURAKAMI, Y
通讯作者：
MURAKAMI, Y