Interior non-uniformity of acoustically excited oscillating gas bubbles
| Autor: | Zhong-yu Guo, Yuning Zhang, Xiao-fei Li |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Acoustic field
Range (particle radiation) Materials science Mechanical Engineering Bubble Thin layer 020101 civil engineering 02 engineering and technology Mechanics Condensed Matter Physics 01 natural sciences 010305 fluids & plasmas 0201 civil engineering Physics::Fluid Dynamics symbols.namesake Mach number Mechanics of Materials Modeling and Simulation Excited state Cavitation 0103 physical sciences symbols |
| Zdroj: | Journal of Hydrodynamics. 31:725-732 |
| ISSN: | 1878-0342 1001-6058 |
| DOI: | 10.1007/s42241-019-0065-6 |
| Popis: | In the present paper, the interior non-uniformity of oscillating gas bubbles in liquids under an acoustic field is theoretically investigated, as well as the temperature non-uniformity in the surrounding liquid. The pressure, the density and the temperature inside the gas bubbles are quantitatively predicted for a wide range of bubble Mach numbers. It is shown that the bubble interior non-uniformity increases significantly with the increase of the bubble Mach number. In the case of a large Mach number, the values of aforementioned paramount parameters at the bubble center are significantly larger than those at the bubble interface. Except for a very thin layer close to the bubble interface, the effects of the temperature non-uniformity in the bulk liquid could be safely ignored. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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