材料科学
粘度
空化
机械
雷诺方程
雷诺数
偏心率(行为)
方位(导航)
汽化
气泡
热力学
复合材料
物理
湍流
天文
法学
政治学
出处
期刊:Wear
[Elsevier]
日期:1958-11-01
卷期号:2 (2): 158-158
被引量:314
标识
DOI:10.1016/0043-1648(58)90453-8
摘要
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.
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