Formation and Breakup of an Immiscible Compound Jet with Density or Viscosity Stratification
| Autor: | Truong V. Vu, Kunal D. Bhagat, John C. Wells |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
coflowing fluid
Materials science Rotational symmetry jetting Stratification (water) dripping 02 engineering and technology lcsh:Technology lcsh:Chemistry Physics::Fluid Dynamics Viscosity laminar flow 020401 chemical engineering viscosity ratio Newtonian fluid General Materials Science 0204 chemical engineering lcsh:QH301-705.5 Instrumentation Fluid Flow and Transfer Processes lcsh:T Process Chemistry and Technology General Engineering Finite difference method Laminar flow Mechanics compound jet density ratio 021001 nanoscience & nanotechnology Breakup lcsh:QC1-999 Computer Science Applications lcsh:Biology (General) lcsh:QD1-999 lcsh:TA1-2040 Compressibility Condensed Matter::Strongly Correlated Electrons front-tracking lcsh:Engineering (General). Civil engineering (General) 0210 nano-technology lcsh:Physics |
| Zdroj: | Applied Sciences Volume 9 Issue 22 Applied Sciences, Vol 9, Iss 22, p 4817 (2019) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app9224817 |
| Popis: | Formation of compound drops by breakup of an axisymmetric compound jet injected from a coaxial nozzle into another immiscible coflowing fluid, at various density and viscosity ratios, is numerically investigated. The fluids are assumed to be Newtonian and incompressible and gravity is neglected for simplicity. A Finite Difference Method with Front Tracking is used to track the evolution and breakup of the compound jet. The outcomes of our numerical results show how density and viscosity ratios affect the compound jet&rsquo s transition from dripping to jetting mode. The density ratios of inner-to-outer and intermediate-to-outer fluids affect compound jet breakup length, drop diameter and drop formation time more than comparable viscosity ratios. At high density and viscosity ratios, due to high inertia and viscous force respectively, the drop formation is more chaotic and mostly multi-core drops are formed. |
| Databáze: | OpenAIRE |
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