Thermocapillary migration of nondeformable drops

Yin, Zhaohua; Gao, Peng; Hu, Wenrui; Chang, Ling‐Yi

doi:10.1063/1.2965549

Cited by 44 publications

(41 citation statements)

References 28 publications

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“…It is clear that the scaled migration velocity increases slightly with growing Re when Ma is large. This is the same as that when Ma is small [15]. Although Re influences the steady migration velocity slightly, it plays an important role in the evolution of drop migration.…”

Section: The Influence Of Re For Large Masupporting

confidence: 60%

“…The advantage of the Front-tracking scheme is the more precise determination of the interface position, which is normally 1/100∼1/1000 of the mesh size. In the case of the thermocapillary migration, the Front-tracking results are served as the benchmark solution in this field [15]. Since fluid properties are different between drops and bulk liquid, it is inevitable to come across non-separable elliptic partial differential equation (PDE) in numerical simulations.…”

Section: Introductionmentioning

confidence: 99%

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An efficient front-tracking solver for thermocapillary migration simulations

Yin

2018

J. Phys.: Conf. Ser.

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Section: The Influence Of Re For Large Masupporting

confidence: 60%

Section: Introductionmentioning

confidence: 99%

An efficient front-tracking solver for thermocapillary migration simulations

Yin

2018

J. Phys.: Conf. Ser.

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“…Furthermore, as mentioned above, a much larger value of the capillary number is also adopted here than that in space experiments. According to the findings by Haj-Hariri et al (1997) and Yin et al (2008) in their numerical studies of the thermocapillary migration of liquid drops with or without deformation, the terminal migration velocities may increase with the increase of the Reynolds number, particularly at high Marangoni number, and may decrease with the increase of the capillary number. Thus, the differences may be diminished if these influences are taken into account.…”

Section: Comparison With Space Experimental Datamentioning

confidence: 99%

Thermocapillary Migration of Deformable Bubbles at Moderate to Large Marangoni Number in Microgravity

Zhao

et al. 2010

Microgravity Sci. Technol.

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Using the level-set method and the continuum interface model, the axisymmetric thermocapillary migration of gas bubbles in an immiscible bulk liquid with a temperature gradient at moderate to large Marangoni number is simulated numerically. Constant material properties of the two phases are assumed. Steady state of the motion can always be reached. The terminal migration velocity decreases monotonously with the increase of the Marangoni number due to the wrapping of isotherms around the front surface of the bubble. Good agreements with space experimental data and previous theoretical and numerical studies in the literature are evident. Slight deformation of bubble is observed, but no distinct influence on the motion occurs. It is also found that the influence of the convective transport of heat inside bubbles cannot be neglected at finite Marangoni number, while the influence of the convective transport of momentum inside bubbles may be actually negligible.

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“…Currently, there are two different probabilities derived from the theories of drop migration with strong nonlinear features. Our theoretical prediction indicates that the scaled drop migration velocities V/V YGB decrease with the increase of Marangoni number (Ma) [28] , whereas the theoretical result from Subramanian research group shows that V/V YGB decreases at first in the smaller Ma region and then sharply increases with the increasing Ma afterward [29] . Therefore, the investigations on the behaviors of drop migration at large Ma in the microgravity condition provoke more attentions.…”

Section: Experiments Of Drop Marangoni Migrationmentioning

confidence: 48%

Space experimental studies of microgravity fluid science in China

Long

Kang

et al. 2009

Chin. Sci. Bull.

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Microgravity fluid physics is an important part of microgravity sciences, which consists of simple fluids of many new systems, gas-liquid two-phase flow and heat transfer, and complex fluid mechanics. In addition to the importance of itself in sciences and applications, microgravity fluid physics closely relates to microgravity combustion, space biotechnology and space materials science, and promotes the developments of interdisciplinary fields. Many space microgravity experiments have been performed on board the recoverable satellites and space ships of China and pushed the rapid development of microgravity sciences in China. In the present paper, space experimental studies and the main results of the microgravity fluid science in China in the last 10 years or so are introduced briefly. microgravity fluid physics, microgravity gas-liquid two-phase flow, microgravity complex fluid, microgravity combustion, space biotechnologyThe technologies of rockets and satellites require the study of the fluid management problem in the storage tanks, and such problems of microgravity engineering in the microgravity environment have been studied in China during the development of space technology [1] . Studies on microgravity sciences in China were started in the late 1980s, when the scientists completed some space experiments on board the Chinese recoverable satellites by the promotion of the National HighTechnology Research Program of China. Main research subjects were the scientific experiments of materials science, in charged by the experts of the Institute of Semiconductor of the Chinese Academy of Sciences (CAS) and the Lanzhou Institute of Physics [2][3][4] , and experiments of space biology, in charged by the experts of life sciences in the CAS [5][6][7] . Some nice results were obtained, although resources of space experiments on board the recoverable satellite were relatively limited in the preliminary period.Microgravity fluid physics is an import part of microgravity sciences, and requires relatively complicated experimental facility in general, mostly the optical diagnostic instrumentations. Theoretical and experimental studies of the microgravity fluid physics on the ground were started relatively early in China [8] ; the scientists of China and Japan jointly completed the microgravity experiments of the thermocapillary convection in floating half zone [9] and drop Marangoni migration [10] using the JAMIC drop shift in Hokkaido and the MGLAB drop shift in Toki respectively before the foundation of the Beijing Drop Tower, and the experimental results were nice. China's first space experiment of fluid physics was completed 10 years later after the initiation of one of the materials science. The experiments of Marangoni convection and thermocapillary convection in two immiscible liquid layers were performed on board the SJ-5

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Thermocapillary migration of nondeformable drops

Cited by 44 publications

References 28 publications

An efficient front-tracking solver for thermocapillary migration simulations

An efficient front-tracking solver for thermocapillary migration simulations

Thermocapillary Migration of Deformable Bubbles at Moderate to Large Marangoni Number in Microgravity

Space experimental studies of microgravity fluid science in China

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