In this study, the variability of spectral dispersion droplet size distributions (DSDs) in convective clouds is investigated. Analyses are based on aircraft measurements growing cumuli near Amazon basin, and numerical simulations an idealized ice-free cumulus. cleaner clouds, relative , defined as ratio standard deviation to mean value diameter, negatively correlated with cloud water content ()...

In this paper the dynamic of a droplet on a surface with a hole is investigated under gravitational effect by using lattice Boltzmann method. Incompressible two-phase flow with high density ratio proposed by Lee is considered. Cahn’s theory is used to observe the wettability of the surface in contact with liquid and gas phases. Several parameters such as contact angle, surface tension and gravi...

Lagrangian stochastic models (LSM) are widely used to model the dispersion of sea spray droplets injected from water surface into marine atmospheric boundary layer (MABL) and for evaluation impact on exchange fluxes between atmosphere ocean. While moving through MABL pass region high gradients air velocity, temperature humidity occurring in vicinity air–water interface. In this case, applicabil...

A modified model has been analytically developed to describe the induction time of an elliptic air bubble in contact with an elliptic hydrophobic oil droplet. The role of hydrophobicity was revealed in the slippage of liquid over the surfaces of bubble and droplet. In this condition, the analytical relationships for pressure distribution and consequently hydrodynamic resistance force through th...

Flow characteristics and heat transfer of a water droplets laden flow behind a backward-facing step have been experimentally and numerically investigated for the condition of isothermally heated dry wall. Two sizes of step heights were employed corresponding to ReH = 5.3x103, 1.1x104. Water droplets of about 60 μm in mean diameter and small fine mist of less than 1 mm as a tracer of air flow we...

Mesogenic ligands have the potential to provide control over the dispersion and stabilization of nanoparticles in liquid crystal (LC) phases. The creation of such hybrid materials is an important goal for the creation of soft tunable photonic devices, such as the LC laser. Herein, we present a comparison of isotropic and mesogenic ligands attached to the surface of CdSe (core-only) and CdSe/ZnS...

PAMAM (polyamidoamine) dendrimers have been recently exploited as efficient and biocompatible unimolecular micelles for oil spill remediation utilizing their robust encapsulation capability. However, experimental evidence suggested that contrasting dispersion mechanisms of PAMAM exist toward different types of hydrocarbon ligands, including linear and polyaromatic oil molecules. Specifically, t...

The aerosol effects on clouds and precipitation in deep convective cloud systems are investigated using the Weather Research and Forecast (WRF) model with the Morrison two-moment bulk microphysics scheme. Considering positive or negative relationships between the cloud droplet number concentration (Nc) and spectral dispersion (o), a suite of sensitivity experiments are performed using an initia...