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Topological structure bifurcation of temperature field of deformable drop in Marangoni migration
Zhao JF(赵建福); Zhang L(张良); Li ZD(李振东); Qin WT
Source PublicationTHEORETICAL & APPLIED MECHANICS LETTERS
2011
Volume1Issue:3Pages:032005
ISSN2095-0349
AbstractThe unsteady processes of the Marangoni migration of deformable liquid drops are simulated numerically in a wider range of Marangoni number (up to $Ma=500$) in the present work. A steady terminal state can always be reached, and the scaled terminal velocity is a monotonic function decreasing with increasing Marangoni number, which is generally in agreement with corresponding experimental data. The topological structure of flow field in the steady terminal state does not change as the Marangoni number increases, while bifurcation of the topological structure of temperature field occurs twice at two corresponding critical Marangoni numbers. A third critical value of Marangoni number also exists, beyond which the coldest point jumps from the rear stagnation to inside the drop though the topological structure of the temperature field does not change. It is found that the inner and outer thermal boundary layers may exist along the interface both inside and outside the drop if $Ma>70$. But the thickness decreases with increasing Marangoni number more slowly than the prediction of potential flow at large Marangoni and Reynolds numbers.
Language英语
DepartmentNML微重力两相流与燃烧
Classification二类
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/48736
Collection国家微重力实验室
Recommended Citation
GB/T 7714
Zhao JF,Zhang L,Li ZD,et al. Topological structure bifurcation of temperature field of deformable drop in Marangoni migration[J]. THEORETICAL & APPLIED MECHANICS LETTERS,2011,1(3):032005.
APA 赵建福,张良,李振东,&Qin WT.(2011).Topological structure bifurcation of temperature field of deformable drop in Marangoni migration.THEORETICAL & APPLIED MECHANICS LETTERS,1(3),032005.
MLA 赵建福,et al."Topological structure bifurcation of temperature field of deformable drop in Marangoni migration".THEORETICAL & APPLIED MECHANICS LETTERS 1.3(2011):032005.
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