منابع مشابه
Numerical simulation of spreading drops
• Numerial simulation of spreading drops on a wettable surface. • We discuss the effect of the main parameters (density, viscosity, surface tension, drop radius and wettability). • Power law evolutions observed in experiments (t/2, t/10) are recovered and discussed. • The combined effect of viscosity and wettability has a significant effect on the spreading.
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Pile foundations are relatively vulnerable to lateral loads. During liquefaction-induced lateral spreading, this vulnerability is particularly conspicuous due to a loss of strength and stiffness in the liquefied soil. A nonlinear effective stress analysis incorporating an elastoplastic constitutive model based on Finite Difference Method (FLAC2D program) was used to numerically simulate shake t...
متن کاملOn the spreading of impacting drops
The energy budget and dissipation mechanisms during droplet impact on solid surfaces are studied numerically and theoretically. We find that for high impact velocities and negligible surface friction at the solid surface (i.e. free-slip), about one half of the initial kinetic energy is transformed into surface energy, independent of the impact parameters and the detailed energy loss mechanism(s...
متن کاملSpreading of Large Drops on Patterned Surfaces
Spreading of Large Drops on Patterned Surfaces — We report an experimental study of the shape of large liquid drops spreading on surfaces with patterns of wettability. The patterns are sets of disks of a material less wettable than the rest of the plane substrate. When few defects are present, or when the average distance between defects is large compared to the capillary length, the drop edge ...
متن کاملCapillarity driven spreading of circular drops of shear-thinning fluid
We investigate the spreading of thin, circular liquid drops of powerlaw rheology. We derive the equation of motion using the thin film approximation, construct source-type similarity solutions and compute the spreading rate, aparent contact angles and height profiles. In contrast with the spreading of newtonian liquids, the contact line paradox does not arise for shear thinning fluids. In this ...
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ژورنال
عنوان ژورنال: Colloids and Surfaces A: Physicochemical and Engineering Aspects
سال: 2013
ISSN: 0927-7757
DOI: 10.1016/j.colsurfa.2013.04.046