Knowledge Management System of Institue of Mechanics, CAS
| Lateral motion and departure of vapor bubbles in nucleate pool boiling on thin wires in microgravity | |
Zhao JF(赵建福) ; Wan SX(万士昕); Liu G; Li ZD; Liu YH; Yan N; Zhao JF
| |
| Source Publication | New Trends In Fluid Mechanics Research - Proceedings Of The Fifth International Conference On Fluid Mechanics |
| 2007 | |
| Pages | 550-553 |
| Conference Name | 5th International Conference on Fluid Mechanics |
| Conference Date | AUG 15-19, 2007 |
| Conference Place | Shanghai, PEOPLES R CHINA |
| Abstract | A space experiment on bubble behavior and heat transfer in subcooled pool boiling phenomenon has been performed utilizing the temperature-controlled pool boiling (TCPB) device both in normal gravity in the laboratory and in microgravity aboard the 22(nd) Chinese recoverable satellite. The fluid is R113 at 0.1 MPa and subcooled by 26 degrees C nominally. A thin platinum wire of 60 mu m in diameter and 30mm in length is simultaneously used as heater and thermometer. Only the lateral motion and the departure of discrete vapor bubbles in nucleate pool boiling are reported and analyzed in the present paper. A scale analysis on the Marangoni convection surrounding a bubble in the process of subcooled nucleate pool boiling leads to formulas of the characteristic velocity of the lateral motion and its observability. The predictions consist with the experimental observations. Considering the Marangoni effect, a new qualitative model is proposed to reveal the mechanism underlying the bubble departure processes and a quantitative agreement can also be acquired. |
| Keyword | Microgravity Nucleate Pool Boiling Lateral Motion Bubble Departure Diameter Marangoni Effect Heat-transfer |
| WOS ID | WOS:000254042000180 |
| Indexed By | CPCI-S |
| Language | 英语 |
| Citation statistics | 正在获取...
|
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/25468 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Zhao JF |
| Recommended Citation GB/T 7714 | Zhao JF,Wan SX,Liu G,et al. Lateral motion and departure of vapor bubbles in nucleate pool boiling on thin wires in microgravity[C]New Trends In Fluid Mechanics Research - Proceedings Of The Fifth International Conference On Fluid Mechanics,2007:550-553. |
| Files in This Item: | Download All | |||||
| File Name/Size | DocType | Version | Access | License | ||
| Conf.64.pdf（284KB） | 开放获取 | -- | View Download | |||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment