Entrainment in multifluid systems, and rotation induced occurrences. (English) Zbl 1500.76096
Summary: Fluid entrainment is a complex and deeply attractive phenomenon that is frequently encountered in both industry and nature. In general, entrainment deals with the basic understanding of penetration one fluid into another which leads to occurrence of complex interfacial structure. The present article addresses a detailed description of the recent studies on entrainment dynamics caused by the external rotational flux across the interfaces is elaborated. Despite of considerable progress in understanding rotation induced entrainment, there are still several questions unanswered due to its difficulty, unpredictability, three-dimensional effects, and chaotic nature. Therefore, here we explained numerous numerical, experimental, and analytical investigations with their relevance in engineering applications wherein the increase of interfacial area causes enhancement of heat and mass transfer. The description also includes various patterns of entrained fluid entities due to rotations induced across the interface. Furthermore, the entrainment behaviors have been critically analyzed to draw out the distinct categorization of rollers relying on parameters such as submergence ratio with different gas-liquid pairs.
MSC:
| 76T10 | Liquid-gas two-phase flows, bubbly flows |
| 76U05 | General theory of rotating fluids |
| 76M99 | Basic methods in fluid mechanics |
| 76-02 | Research exposition (monographs, survey articles) pertaining to fluid mechanics |
Keywords:
entrapment; nucleation; rotary entrainment; capillary number effect; gas-liquid flow; numerical simulationReferences:
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