Two-Dimensional Numerical Simulation for Flow Pattern Transition of Thermal-Solutal Capillary Convection in an Annular Pool

Li, You–Rong; Zhou, Yongli; Tang, Jing-Wen; Zhen-Xing, Gong

doi:10.1007/s12217-013-9343-z

Cited by 10 publications

(4 citation statements)

References 16 publications

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“…However, there is little research devoted to the thermal-solutal capillary flow or the thermocapillary flow of a binary mixture with a horizontal temperature or concentration gradient in an annular pool. In our previous works [22,23], the thermal-solutal capillary flow in an annular pool with horizontal temperature and solute concentration gradients has been studied by asymptotical analysis and the two-dimensional numerical simulation. This paper aims to understand the influence of the Soret effect on the thermocapillary-buoyancy flow of a binary mixture in a shallow annular pool with a horizontal temperature gradient.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional thermocapillary–buoyancy flow of a binary mixture with Soret effect in a shallow annular pool

et al. 2015

International Journal of Heat and Mass Transfer

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Section: Introductionmentioning

confidence: 99%

Three-dimensional thermocapillary–buoyancy flow of a binary mixture with Soret effect in a shallow annular pool

et al. 2015

International Journal of Heat and Mass Transfer

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“…Definitions of flow patterns are based on linguistic description and graphical illustrations. The visual flow pattern classification is determined through subjective descriptions, which might vary for different viewers (Hernandez-Contreras, 2013;Li et al, 2013). Normally, there is no clear boundary between two adjacent patterns in two-phase flows, i.e.…”

Section: Typical Flow Patterns and Their Characteristicsmentioning

confidence: 99%

Application of orthogonal design to optimize flow pattern transition conditions

et al. 2015

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2015),"Nanomaterials for new and emerging physical sensing applications: a review of recent developments", Sensor Review, Vol. 35 Iss 4 pp. 321-328 http://dx.If you would like to write for this, or any other Emerald publication, then please use our Emerald for Authors service information about how to choose which publication to write for and submission guidelines are available for all. Please visit www.emeraldinsight.com/authors for more information. About Emerald www.emeraldinsight.comEmerald is a global publisher linking research and practice to the benefit of society. The company manages a portfolio of more than 290 journals and over 2,350 books and book series volumes, as well as providing an extensive range of online products and additional customer resources and services.Emerald is both COUNTER 4 and TRANSFER compliant. The organization is a partner of the Committee on Publication Ethics (COPE) and also works with Portico and the LOCKSS initiative for digital archive preservation. AbstractPurpose -This paper aims to discuss flow pattern transition (FPT) as an important factor in multiple-phase flow measurements. Several methods have been proposed to control FPT, but those methods fail to address the many issues in complex flow conditions that can affect flow patterns. Design/methodology/approach -In this paper, a non-intrusive sensor instrumentation is applied to extract measurable data under different flow conditions. Using these data, a simple theoretical-mathematical method along with an orthogonal design is applied to FPT optimization. Orthogonal experiments are designed and carried out according to theoretical guidelines. Three selected process parameters -phase fraction, gas pressure in the initial independent process and liquid speed -are optimized for FPT results to produce a minimum FPT time. Findings -The following results are obtained: the phase fraction in the initial independent process can lead to significant reductions in FPT time, gas pressure plays an important role and liquid speed has no apparent effect on FPT results. Under optimized conditions, FPT time can be shortened to 0.3-0.6 times by controlling the above three parameters compared with normal conditions. Originality/value -The proposed method is simple, rapid and efficient for evaluating an FPT process and lays the foundation for further FPT applications.

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“…They play an important role, such as in boiling heat transfers [2,[7][8][9][10] and heat pipes [3,[11][12][13]. This is because of the anomalous behavior of their gas-liquid surfaces under temperature gradients [9,11,[14][15][16][17][18][19][20]. In pure liquids, the temperature gradient along the gas-liquid surface causes a shear force from hot to cold regions on the surface because the surface tension typically decreases with increasing temperature [21].…”

Section: Introductionmentioning

confidence: 99%

Investigation of transition from thermal- to solutal-Marangoni flow in dilute alcohol/water mixtures using nano-plasmonic heaters

Namura

Nakajima²,

Suzuki³

2018

Nanotechnology

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We experimentally investigated Marangoni flows around a microbubble in diluted 1-butanol/water, 2-propanol/water, and ethanol/water mixtures using the thermoplasmonic effect of gold nanoisland film. A laser spot on the gold nanoisland film acted as a highly localized heat source that was utilized to generate stable air microbubbles with diameters of 32-48 μm in the fluid and to induce a steep temperature gradient on the bubble surface. The locally heated bubble has a flow along the bubble surface, with the flow direction showing a clear transition depending on the alcohol concentrations. The fluid is driven from the hot to cold regions when the alcohol concentration is lower than the transition concentration, whereas it is driven from the cold to hot regions when the concentration is higher than the transition concentration. In addition, the transition concentration increases as the carbon number of the alcohol decreases. The observed flow direction transition is explained by the balance of the thermal- and solutal-Marangoni forces that are cancelled out for the transition concentration. The selective evaporation of the alcohol at the locally heated surface allows us to generate stable and rapid thermoplasmonic solutal-Marangoni flows in the alcohol/water mixtures.

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Two-Dimensional Numerical Simulation for Flow Pattern Transition of Thermal-Solutal Capillary Convection in an Annular Pool

Cited by 10 publications

References 16 publications

Three-dimensional thermocapillary–buoyancy flow of a binary mixture with Soret effect in a shallow annular pool

Three-dimensional thermocapillary–buoyancy flow of a binary mixture with Soret effect in a shallow annular pool

Application of orthogonal design to optimize flow pattern transition conditions

Investigation of transition from thermal- to solutal-Marangoni flow in dilute alcohol/water mixtures using nano-plasmonic heaters

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