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大尺寸液桥热毛细对流失稳性地面实验研究
王佳; 吴笛; 段俐; 康琦
Source Publication力学学报
2015-07-18
Issue4Pages:580-586
Abstract开展大尺寸液桥浮力-热毛细对流地面实验,探究流场转捩的临界条件及临界状态附近的流动情况.通过粒子图像测速方法 (PIV)获得流体速度场,研究液桥内部定常和转捩后的流场结构以及流体运动规律;并用红外热像仪测量液桥自由面温度分布,研究流体流动的时空演化和温度振荡.实验发现大尺寸半浮区液桥浮力-热毛细对流临界值与几何参数有关,在大普朗特(Prandtl)数情况下,流场存在由稳定态向不稳定态再到混沌的转捩过程,在临界马兰哥尼(Marangoni)数附近,流场内会出现行波现象,流动模式也会随高径比的变化而发生变化;当继续增大马兰哥尼数,流动会进入混沌状态.
Keyword浮力-热毛细对流 大尺寸液桥 流动模式 热流体波 转捩
Indexed ByCSCD
Language中文
Funding Organization国家自然科学基金(11372328,11032011) ; 载人航天、实践十号卫星空间科学资助项目~~
CSCD IDCSCD:5471355
DepartmentNML微重力实验流体力学
Classification二类
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58255
Collection国家微重力实验室
Recommended Citation
GB/T 7714
王佳,吴笛,段俐,等. 大尺寸液桥热毛细对流失稳性地面实验研究[J]. 力学学报,2015(4):580-586.
APA 王佳,吴笛,段俐,&康琦.(2015).大尺寸液桥热毛细对流失稳性地面实验研究.力学学报(4),580-586.
MLA 王佳,et al."大尺寸液桥热毛细对流失稳性地面实验研究".力学学报 .4(2015):580-586.
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