Transient growth in thermocapillary liquid layers | |
Hu KX(胡开鑫)1; Zheng S1; Chen QS(陈启生)2,3 | |
发表期刊 | PHYSICAL REVIEW FLUIDS |
2020-01-06 | |
卷号 | 5期号:1页码:18 |
ISSN | 2469-990X |
摘要 | The transient growth in thermocapillary liquid layers is examined by nonmodal stability theory. Two kinds of thermocapillary liquid layers including linear flow and return flow are considered. The transient growth is measured by a growth function, which depends on both the velocity and temperature. It was found that rather large transient growth occurs in subcritical flows at small Prandtl numbers (Pr), while the temperature field on the surface has a negative effect on the transient growth. In particular, the transient growth function increases significantly with the Reynolds number, but decreases with Pr. The most amplified perturbation is characterized by counter-rotating vortices and streaks, which are both nearly streamwise. Energy analysis shows that the energy of transient growth mainly comes from the basic flow, while the work done by Marangoni forces on the surface is negligible. |
DOI | 10.1103/PhysRevFluids.5.014001 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000506001600004 |
关键词[WOS] | TENSION-DRIVEN CONVECTION ; PLANE COUETTE-FLOW ; FREE-SURFACE ; STABILITY ; INSTABILITY ; FLUID ; GRAVITY ; FILM |
WOS研究方向 | Physics |
WOS类目 | Physics, Fluids & Plasmas |
资助项目 | National Natural Science Foundation of China[11872032] ; National Natural Science Foundation of China[U1738119] ; National Natural Science Foundation of China[11532015] ; K. C. Wong Magna Fund in Ningbo University |
项目资助者 | National Natural Science Foundation of China ; K. C. Wong Magna Fund in Ningbo University |
论文分区 | 二类 |
力学所作者排名 | 3 |
RpAuthor | Hu, Kai-Xin |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/81243 |
专题 | 微重力重点实验室 |
作者单位 | 1.Ningbo Univ, Sch Mech Engn & Mech, Key Lab Impact & Safety Engn, Minist Educ, Ningbo 315211, Zhejiang, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100190, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Key Lab Micrograv, Beijing 100190, Peoples R China |
推荐引用方式 GB/T 7714 | Hu KX,Zheng S,Chen QS. Transient growth in thermocapillary liquid layers[J]. PHYSICAL REVIEW FLUIDS,2020,5,1,:18. |
APA | Hu KX,Zheng S,&Chen QS.(2020).Transient growth in thermocapillary liquid layers.PHYSICAL REVIEW FLUIDS,5(1),18. |
MLA | Hu KX,et al."Transient growth in thermocapillary liquid layers".PHYSICAL REVIEW FLUIDS 5.1(2020):18. |
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