Pressure and Velocity Fluctuation in the Numerical Simulation of Bubble Detachment in a Venturi-Type Bubble Generator
文献类型：期刊论文
| 作者 | Cai, KB; Song, YC; Li, JJ; Wang, DZ; Yin, JL; Liu, W; Li, H |
| 刊名 | NUCLEAR TECHNOLOGY
 |
| 出版日期 | 2019 |
| 卷号 | 205期号:43467页码:94—103 |
| ISSN号 | 0029-5450 |
| 关键词 | LIQUID CROSS-FLOW GAS INJECTION WALL ORIFICE MODEL PREDICTION |
| DOI | 10.1080/00295450.2018.1479575 |
| 文献子类 | 期刊论文 |
| 英文摘要 | The Venturi-type bubble generator proposed by Oak Ridge National Laboratory is used to produce micro-sized bubbles. In this paper, a numerical simulation is carried out to study the process of the bubble formation and detachment from a wall orifice of a Venturi-type bubble generator in a cross-flowing liquid. The Volume-of-Fluid (VOF) method is applied to track the two-phase interface and study the evolution of the bubble formation. The result of the computation provides a visual three-dimensional bubble and shows the process of bubble formation and detachment. Three stages are identified during bubble formation (the expansion stage, the rising stage, and the collapse stage). Because of the compressibility of the gas, a fluctuation of the pressure and the mass flow rate in the gas chamber is observed, which is considered a significant effect on the bubble formation and detachment. The mechanism of the bubble detachment is clarified with the help of the mass flow rate fluctuation. The equivalent diameter is compared with that predicted by a previous model. A Coupled Level Set Volume-of-Fluid (CLSVOF) simulation is compared with the VOF simulation; the three stages and the fluctuation are also observed in the CLSVOF simulation. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/31768]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Shanghai Jiao Tong Univ, Sch Mech Engn, 800 Dongchuan Rd, Shanghai 200240, Peoples R China; 2.Chinese Acad Sci, Shanghai Inst Appl Phys, Jiading Campus, Shanghai 201800, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, KB,Song, YC,Li, JJ,et al. Pressure and Velocity Fluctuation in the Numerical Simulation of Bubble Detachment in a Venturi-Type Bubble Generator[J]. NUCLEAR TECHNOLOGY,2019,205(43467):94—103. |
| APA | Cai, KB.,Song, YC.,Li, JJ.,Wang, DZ.,Yin, JL.,...&Li, H.(2019).Pressure and Velocity Fluctuation in the Numerical Simulation of Bubble Detachment in a Venturi-Type Bubble Generator.NUCLEAR TECHNOLOGY,205(43467),94—103. |
| MLA | Cai, KB,et al."Pressure and Velocity Fluctuation in the Numerical Simulation of Bubble Detachment in a Venturi-Type Bubble Generator".NUCLEAR TECHNOLOGY 205.43467(2019):94—103. |
入库方式： OAI收割
来源：上海应用物理研究所
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