Effects of thermal fluctuations in the fragmentation of a nano-ligament
arXiv:1804.09520 · doi:10.1103/PhysRevE.98.012802
Abstract
We study the effects of thermally induced capillary waves in the fragmentation of a liquid ligament into multiple nano-droplets. Our numerical implementation is based on a fluctuating lattice Boltzmann (LB) model for non-ideal multicomponent fluids, including non-equilibrium stochastic fluxes mimicking the effects of molecular forces at the nanoscales. We quantitatively analyze the statistical distribution of the break-up times and the droplet volumes after the fragmentation process, at changing the two relevant length scales of the problem, i.e., the thermal length-scale and the ligament size. The robustness of the observed findings is also corroborated by quantitative comparisons with the predictions of sharp interface hydrodynamics. Beyond the practical importance of our findings for nanofluidic engineering devices, our study also explores a novel application of LB in the realm of nanofluidic phenomena.
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Cited by in corpus (6)
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- Sub-Kolmogorov droplet dynamics in isotropic turbulence using a multiscale lattice Boltzmann scheme
- Structure and Isotropy of Lattice Pressure Tensors for Multi-range Potentials
- Lattice Boltzmann simulations of droplet breakup in confined and time-dependent flows
- Fluctuation-driven dynamics of liquid nano-threads with external hydrodynamic perturbations