The present article aims at developing simple realistic models in order to describe the gaseous removal process of SO(2) by absorption with and without chemical reaction in spray towers. Effects of droplet size, droplet velocity, superficial gas velocity, liquid flow rate and tower height on the performance of such a system are theoretically predicted. Model calculations bring out some very int...

In this research, the volume of fluid (VOF) method is used to study hydrodynamics rotating packed beds (RPBs). The model validated, and grid independence analyses are performed for cases with different operating conditions. droplet size distribution investigated characterize RPBs. Droplet distributions compared in two-dimensional three-dimensional simulations, it demonstrated that simulations c...

In the present research, the D-(+)-Glucose–confined water nanodroplets with mean size in the range of 6-11 nm were synthesized at D-(+)-Glucose different concentrations by AOT reverse micelles (RMs) method as a function of mass fraction of droplet (MFD) at the constant water-to-surfactant molar ratio ( W=40). The dynamic light scattering of the nano-sized water droplets containing the D-(+)-Glu...

Transmission of respiratory infectious diseases in humans, for instance influenza, occurs by several modes. Respiratory droplets provide a vector of transmission of an infectious pathogen that may contribute to different transmission modes. An epidemiological model incorporating the dynamics of inhalable respiratory droplets is developed to assess their relevance in the infectious process. Inha...

Droplet-based microfluidics has led to transformational new approaches in diverse areas including materials synthesis and high-throughput biological assays. However, the translation of droplet microfluidics technology into commercial applications requires scale-up of droplet generation from the laboratory (<10 mL h(-1)) to the industrial (>1 L h(-1)) scale. To address this challenge, we develop...

Microfluidic droplet formation at a T-junction in the jetting regime was studied theoretically and an analytical force balance model was proposed to predict the diameter of droplets. The forces governing droplet production in the jetting regime include the shear, interfacial tension, linear momentum and inertial forces. Experiments were carried with non-Newtonian xanthan gum solutions as the di...

The droplet separation from a liquid jet was investigated experimentally. Details of the shape of the thin liquid neck joining the droplet to its parent body were studied in terms of the fluid viscosity and the jet diameter. As the viscosity increased, the neck rapidly elongated creating a long thread. Its final diameter before rupture was approximately one micrometer and seems to be constant w...

Heat and mass transfer of evaporation by collisions between droplets and solid particles can be significantly different under different conditions and could be affected by many factors, such as, the diameter ratio of solid and droplet, the hydrodynamic characteristics of the droplet, temperature difference between solids and droplet, the geometry curvature, the bridge effect of two or three bal...

The purpose of this study is to produce an oil-in-water nano-emulsion by ultrasonication. Casein combined with inulin used as continuous phase, while dispersed phase consisted of fish oil. The size of the nano-emulsion and the pH of nano-emulsion were characterized. Ultrasound has been used for preparing emulsion by 24 KHz intensity for 120 seconds. Prepared nano-emulsion was investigated by pa...

The purpose of this study is to produce an oil-in-water nano-emulsion by ultrasonication. Casein combined with inulin used as continuous phase, while dispersed phase consisted of fish oil. The size of the nano-emulsion and the pH of nano-emulsion were characterized. Ultrasound has been used for preparing emulsion by 24 KHz intensity for 120 seconds. Prepared nano-emulsion was investigated by pa...