Vsevolod Ivanovych Sklabinskyi

Modelling of Liquid’s Distribution and Migration in the Fibrous Filter Layer in the Process of Inertial-Filtering Separation

The obtained solution of the mathematical model of liquid’s distribution and migration in the filter layer as flow model in the fibrous environment, which describes the non-pressure filtration motion in the gravity field of the separated liquid film from the gas-drop flow, allows to determine the saturation conditions of the free volume of the filter layer, distribution of speed and pressure under the conditions of free liquid’s movement in the filter layer, as well as to calculate the required cross-sectional area of the thin-layer fibrous filter element and the optimum height of the location of the overflow chutes for draining the separated liquid from the inertial-filtering to the drainage channels in order to avoid the secondary removal of droplets with the turbulent gas flow. As a result, the application rate of the separated liquid which falls from the filter element of the inertial-filtering separation channel to the drainage channels is obtained, as well as the dependence for the overflowed gutter of diverting the separated liquids from the inertial-filtering to the drainage channels is presented.

CFD Simulation of Ammonium Nitrate Melt in a Perforated Rotating Bucket

In this paper, a computational fluid dynamics (CFD) model was developed to study the influence of the flow pattern of ammonium nitrate melt on the jet emerging from the perforations located on the wall surface of the rotating bucket. The numerical simulations were carried out using ANSYS CFX software in which a three dimensional model closed via a k-e turbulence model was adopted. To improve the performance of the bucket, design parameters such as a number of blades setting up in the bucket and selecting their geometrical shape were examined in depth. It was found that these parameters had a crucial impact on the velocity of the melt jet. While increasing the jet velocity, the probability of plugging and alteration of geometrical sizes of perforations decreases. This enables using the bucket for dispersing melts with solid impurities. The results of CFD simulation were applied for developing a modified rotating perforated bucket of the melt with nitrogen fertilizers, which has passed experimental and industrial tests.