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An experimental research on surface oscillation of buoyant-thermocapillary convection in open cylindrical annuli
Zhang L; Duan L(段俐); Kang Q(康琦); Kang, Q (reprint author), Chinese Acad Sci, Natl Micrograv Lab, Inst Mech, Beijing 100190, Peoples R China.
Source PublicationActa Mechanica Sinica
2014-10
Volume30Issue:5Pages:681-686
ISSN0567-7718
AbstractAn experiment is carried out on the surface oscillation of buoyant-thermocapillary convection in an open cylindrical annulus. When the radial temperature difference Delta T reaches a critical value Delta T (c), a regular oscillation appears and soon disappears on the open surface, which varies when the liquid layer's thickness h and temperature difference Delta T are varied. With growth of Delta T, dominant frequency of the visible oscillation will grow too but is found within certain frequencies. Driving forces, buoyance and thermocapillarity, are responsible for this phenomanon and the "balance" point is considered to exist when h is between 4.5-5.0mm. Surface oscillation region is also found restricted within a narrow gap when Bo is smaller than 3.7.
KeywordCylindrical Annulus Buoyant-thermocapillary Convection Surface Oscillation Critical Temperature Difference
Subject AreaEngineering ; Mechanics
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Indexed BySCI ; EI ; CSCD
Language英语
WOS IDWOS:000344382200007
Funding OrganizationThe project was supported by the National Natural Science Foundation of China (11032011 and 10972224) and Knowledge Innovation Program of Chinese Academy of Sciences (KJCX2-YW-L08).
DepartmentNML微重力实验流体力学
Classification二类
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/49385
Collection国家微重力实验室
Corresponding AuthorKang, Q (reprint author), Chinese Acad Sci, Natl Micrograv Lab, Inst Mech, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Zhang L,Duan L,Kang Q,et al. An experimental research on surface oscillation of buoyant-thermocapillary convection in open cylindrical annuli[J]. Acta Mechanica Sinica,2014,30(5):681-686.
APA Zhang L,段俐,康琦,&Kang, Q .(2014).An experimental research on surface oscillation of buoyant-thermocapillary convection in open cylindrical annuli.Acta Mechanica Sinica,30(5),681-686.
MLA Zhang L,et al."An experimental research on surface oscillation of buoyant-thermocapillary convection in open cylindrical annuli".Acta Mechanica Sinica 30.5(2014):681-686.
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