Diffusion and Deposition of Nanoparticles in an Nonisothermal Continuous-Flow Reactor
Amanbaev T.R.
September 2023Springer
Journal of Engineering Physics and Thermophysics
2023#96Issue 51215 - 1226 pp.
By way of mathematical and numerical simulation of an nonisothermic flow of a gas with nanoparticles in a tubular continuous-flow reactor with an nonuniform temperature field, the influence of the diffusion (Brownian diffusion and thermodiffusion) of nanoparticles in this flow and their diffusion deposition on the walls of the reactor on the parameters of the gas-suspension flow in it was investigated. The problem on the two-dimensional flow of a nanogas suspension with a nonuniform transverse velocity profile in such a reactor was solved. The longitudinal and transverse distributions of the concentration of nanoparticles in this suspension and its temperature in the reactor were obtained by the numerical finite difference method. The influence of the initial concentration of nanoparticles in the gas flow at the inlet cross section of the reactor and the Knudsen number of the nanoparticles (their sizes in fact) on the distributions of the characteristics of the disperse-mixture flow in the reactor was determined.
Brownian diffusion , deposition , Knudsen number , nanoparticles , reactor , thermodiffusion
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M. Auézov South Kazakhstan State University, 5 Tauke Khan Ave., Shymkent, 160012, Kazakhstan
Institute of Mathematics and Mathematical Modeling, 125 Pushkin Str., Almaty, 050010, Kazakhstan
M. Auézov South Kazakhstan State University
Institute of Mathematics and Mathematical Modeling
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