Technique for the computational determination of the hydraulic resistance of a gas-dispersed flow
Journal Title: Технічна механіка, Техническая механика, Technical Mechanics - Year 2017, Vol 4, Issue 4
Abstract
The aim of this work is to determine the hydraulic resistance of a gas-dispersed flow in a horizontal channel with a minimum of empirical data. Assuming the gas-dispersed flow energy balance as a sum of two terms: the carrier gas energy and the particle energy, a relation for hydraulic resistance determination in Gasterstadt’s form is obtained. To find the particle drag and relative velocity appearing in this relation, use is made of the results of a numerical solution of the problem of the motion of particles in a horizontal channel in Lagrangian variables with account for the interaction of the particles with the channel walls and with one another. The effect of the particles on the carrier gas parameters is neglected. A verification of the proposed technique using various empirical rela-tionships reported in the literature has shown that the calculated and the experimental results are in satisfactory agreement. The proposed technique may be used in the development and design of engineering systems with gas-dispersed flows.
Authors and Affiliations
V. Tymoshenko, Ju. Knyshenko
Mathematical model of particle heat at formation of thermo-exfoliated graphite on heat irradiation
A mathematical model for heating by radiant heat transfer of a single particle of intercalated graphite dur-ing the process of its structural transformation in thermo-exfoliated graphite is developed. A procedure for bui...
Optimal trajectories of spacecraft undergoing discontinuous changes in its parameters
The work objective is to examine optimal coplanar trajectories of the spacecraft with parameters undergoing discontinuous changes within a certain time in the central-force Newton field. The Pontryagin maximum principl...
. On the aerodynamic optimization of impellers of supersonic compressor stages.
The study deals with the pressing problem of diminution in the computer time for an aerodynamic optimization of blade rims of axial compressors when a numerical simulation of the flow based on the full averaged Navier-St...
Ballistic Analysis of Orbits Distribution of Spacecraft for Different Functional Missions
The paper focusses on the procedure and analysis of the results of ballistic studies on near-Earth space fill-ing with orbits of communications satellites, navigational satellites, and Earth remote sensing satellites. Th...
Synthesis of robust controller for ion beam shepherd control system
The study objective is to synthesize a motion controller for an ion-beam shepherd with respect to space de-bris object during its contactless de-orbiting. It is assumed that the control system has sensors for measuring t...