Numerical Simulation Study of the Effect of Liquid Depth on the Stability of Thermal Marangoni Convection in a Shallow Cavity
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- Nayanajith Weerakoon Rathnayake Neranjan
- Department of Materials Engineering Science, Osaka University
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- Laknath Agampodi Mendis Radeesha
- Department of Materials Engineering Science, Osaka University
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- Okano Yasunori
- Department of Materials Engineering Science, Osaka University
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- Dost Sadik
- Crystal Growth Laboratory, University of Victoria
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<p>The effect of liquid depth on thermal Marangoni convection stability in a shallow cavity was investigated via three-dimensional (3D) numerical simulations. The liquid film in the cavity is silicone oil with a Prandtl number of 6.7. The cavity is subjected to perpendicular temperature gradients. The simulation results show that, for thinner films, a primary instability appears when the flow transits from a steady state to a 3D oscillatory pattern. In thicker films, a secondary instability appears when the flow changes from oscillatory to chaotic. The critical thermal Marangoni numbers (at which transitions occur) of thin films are higher than those of thicker films. The simulation results imply that the uniform steady flow behavior in thinner films can be utilized to a benefit in coating and thin film applications, while the chaotic flow behavior predicted in thicker films can be utilized to obtain better mixing in applications such as lubrication and mixing.</p>
収録刊行物
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- JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
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JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 55 (11), 337-343, 2022-11-20
公益社団法人 化学工学会
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詳細情報 詳細情報について
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- CRID
- 1390012711625448320
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- NII書誌ID
- AA00709658
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- ISSN
- 18811299
- 00219592
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- NDL書誌ID
- 032573992
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
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- 抄録ライセンスフラグ
- 使用不可