中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
热毛细对流模式转换及温度振荡特征

文献类型:期刊论文

作者朱鹏; 段俐; 康琦
刊名北京航空航天大学学报
出版日期2012-07-15
卷号38期号:7页码:882-885
通讯作者邮箱pengzhu405@yahoo.com.cn
关键词热毛细对流 温度振荡 临界条件 微重力
ISSN号1001-5965
其他题名Characteristics of temperature oscillation inthermocapillary convection in rectangular pool
产权排序中国科学院力学研究所国家微重力实验室
通讯作者朱鹏
中文摘要研究了矩形液池中由于两端温差引起的热毛细对流的温度振荡临界条件.在实验室中,设计了一个高分辨率的温度测量系统,用于实时观测并记录流体的温度.该系统主要由热电偶温度传感器、纳伏表和数据采集电脑3部分组成.得到了各种实验条件下温度振荡的临界条件,并且讨论了它与Prandtl数和Bond数之间的关系.利用flow3d软件数值模拟了微重力条件下的热毛细对流,发现了一种由于自由面变形和液层流场相互作用导致的晃荡的现象.
英文摘要Experimental and numerical results on characteristics of temperature oscillation in a rectangular pool of silicone oil were presented. A thermocapillary-convection controlling system was established in laboratory to study the critical condition and characteristics of temperature oscillation. The applied temperature gradient along the fluid-gas interface drived shear flow along the free surface from hot to cold and a back flow in the underlying layer. When the temperature gradient increases to a critical value, the original steady flow will become unstable to oscillatory flow. And with the deeply increasement of the temperature gradient, the flow will finally transit to the state of chaos. A temperature measurement system, which consists of thermocouple, nano-voltmeter and data-acquiring computer, was used to record the temperature of the liquid dynamically. Critical conditions for different experimental parameters were obtained, and its relationship with Prandtl number and Bond number was discussed in details. In addition, thermocapillary convection in microgravity was simulated; Sloshing of free surface was observed, which is thought to be produced by the interaction between deformation of free surface and flow field.
学科主题微重力流体力学
收录类别CSCD ; EI
资助信息国家自然科学基金资助项目(10972224,11032011); 中国科学院三期创新方向性项目(KJCX2-YW-L08)
原文出处http://epub.cnki.net/kns/detail/detail.aspx?FileName=BJHK201207008&DbName=CJFQ2012
语种中文
CSCD记录号CSCD:4614433
公开日期2013-01-16
源URL[http://dspace.imech.ac.cn/handle/311007/46436]  
专题力学研究所_国家微重力实验室
推荐引用方式
GB/T 7714
朱鹏,段俐,康琦. 热毛细对流模式转换及温度振荡特征[J]. 北京航空航天大学学报,2012,38(7):882-885.
APA 朱鹏,段俐,&康琦.(2012).热毛细对流模式转换及温度振荡特征.北京航空航天大学学报,38(7),882-885.
MLA 朱鹏,et al."热毛细对流模式转换及温度振荡特征".北京航空航天大学学报 38.7(2012):882-885.

入库方式: OAI收割

来源:力学研究所

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