Open AccessФото- и термофорез нагретых умеренно крупных аэрозольных частиц сферической формы
Author(s) -
Н.В. Малай,
Е.Р. Щукин
Publication year - 2019
Publication title -
žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-748X
pISSN - 0044-4642
DOI - 10.21883/jtf.2019.04.47303.219-18
Subject(s) - thermophoresis , knudsen number , péclet number , mechanics , aerosol , thermal conductivity , viscosity , allowance (engineering) , particle (ecology) , reynolds number , thermodynamics , physics , classical mechanics , heat transfer , meteorology , mechanical engineering , nanofluid , turbulence , oceanography , engineering , geology
A theory of photo- and thermophoresis of a heated medium-size spherical aerosol particle is proposed in the quasi-stationary Stokes approximation at relatively small Reynolds and Peclet numbers. Gas-dynamic equations are solved with allowance for power dependences of the molecular transport (viscosity and thermal conductivity) coefficients and density of the gas medium on temperature. Boundary conditions take into account effects that are linear with respect to the Knudsen number. Expressions for the total force and velocity are derived. It is shown than the above effects may substantially affect the motion of a heated particle.