Two-way coupled Reynolds and Rayleigh–Plesset equations for a fully transient, multiphysics cavitation model with pseudo-cavitation
| Autor: | Minel J. Braun, Kristopher Pierson, Troy A. Snyder |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Chemistry
Mechanical Engineering Multiphysics Bubble Rotational speed 02 engineering and technology Surfaces and Interfaces Mechanics 021001 nanoscience & nanotechnology Reynolds equation Surfaces Coatings and Films Physics::Fluid Dynamics symbols.namesake Viscosity 020303 mechanical engineering & transports Classical mechanics 0203 mechanical engineering Mechanics of Materials Cavitation symbols Rayleigh–Plesset equation Rayleigh scattering 0210 nano-technology |
| Zdroj: | Tribology International. 93:429-445 |
| ISSN: | 0301-679X |
| DOI: | 10.1016/j.triboint.2015.08.040 |
| Popis: | This study presents a physics-based cavitation model solving the coupled Rayleigh–Plesset (RP) and Reynolds (RE) equations in a fully transient environment. Inclusion of the surface dilatational viscosity within the interfacial stress balance of a dynamically growing bubble is discussed at length and detailed physical insight into its mechanism adds significantly to the existing body of literature. A parametric study establishes the importance of the surface dilatational viscosity and values on the order of 10 −2 to 10 −4 [N s/m] are shown to establish upper and lower bounds on tensile stresses producing the full and half-Sommerfeld-like solutions respectively. Interactions between rotational speed and eccentricity ratio are elucidated with the overall effect of increasing surface dilatational viscosity shown to be de-stabilizing. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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