Hydrodynamics of gas phase in a shallow bubble column from in-line photography
Hydrodynamics of gas phase in a shallow bubble column from in-line photography
复制标题
来自在线摄影的浅气泡塔中气相的流体动力学
DOI：
10.1016/j.ces.2020.115703
复制
发表时间：
2020-08
影响因子：
4.7
通讯作者：
Yang Chao
中科院分区：
文献类型：
--
作者：
Liu Zhen;Li Xiangyang;Mao Zai-Sha;Yuan Shaojun;Yang Chao
浅层鼓泡塔中的流体力学问题还没有得到很好的研究。利用远心视觉探头对自来水和CMC溶液中SBC中气泡的形状、尺寸和气含率进行了空间分辨测量。CMC中气泡形状更规则，气泡尺寸的极化现象更严重。气泡形状分布符合Wellek关联式和Bozzano-Dente关联式，因为气泡之间的相互作用较弱。与文献不同的是，高宽比和Eotvos数之间的关系确实依赖于采样位置。检测到太多的微小气泡会干扰常规气泡尺寸分布的观察。借助于气泡面积分布，阐明了大小气泡对气液传质的实际影响。SBC中羽流区的体积分数较高导致抛物线BHD，而TBC中的发展流几乎是平坦的。
In shallow bubble columns (SBC), the under-developing hydrodynamics have not been well understood. The spatially-resolved measurements are conducted to probe bubble shape, size and gas holdup in SBC using a telecentric vision probe in tap water and CMC solution. More regular bubble shape and more serious polarization of bubble size are found in CMC. Bubble shape distributions agree well with the Wellek correlation and Bozzano-Dente correlation because of weaker interaction between bubbles. Different from the literature, relationship between aspect ratio and Eotvos number does depend on sampling locations. Too many tiny bubbles detected interfere with the observation of the conventional bubble size distribution. Assisted by the bubble area distributions, the actual effects of small and large bubbles on gas-liquid mass transfer are clarified. Higher volume fraction of the plume zone in SBC leads to the parabolic BHD in contrast to the almost flat profiles in the developed flow in TBC.
登录
查看更多内容
蜡晶体存在下天然气水合物形成和浆液粘度的研究
影响因子：
3.7
作者：
Shi, Bo-Hui;Chai, Shuai;Gong, Jing
通讯作者：
Gong, Jing
影响因子：
4.7
作者：
Onkar N. Manjrekar;M. Duduković
通讯作者：
Onkar N. Manjrekar;M. Duduković
影响因子：
5.2
作者：
B. Saadevandi;R. Turton
通讯作者：
B. Saadevandi;R. Turton
影响因子：
4.7
作者：
Cerqueira, R. F. L.;Paladino, E. E.;Maliska, C. R.
通讯作者：
Maliska, C. R.
影响因子：
15.1
作者：
K. Kuwagi;Sunao Kusu;H. Ozoe
通讯作者：
K. Kuwagi;Sunao Kusu;H. Ozoe