Results 21 to 30 of about 10,814,884 (348)
Low-Knudsen-number photophoresis of aerosol spheroids [PDF]
Journal of Colloid and Interface Science, 2005 The photophoretic motion of a freely suspended aerosol spheroid exposed to a radiative heat flux that is oriented arbitrarily with respect to its axis of revolution is analytically studied. The Knudsen number is assumed to be so small that the fluid flow can be described by a continuum model with a thermal slip at the particle surface.
Ou, Chang L., Keh, Huan J.
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Inventions, 2023 We are proposing a model mathematical description of droplet evaporation using the kinetic approach. We have obtained the basic equation of the theory by using the law of conserving the full power of the vapor–liquid system, which has not been done ...
Sergey Oktyabrinovich Gladkov
doaj +1 more source
Lattice Boltzmann method at finite Knudsen numbers [PDF]
Europhysics Letters (EPL), 2005 A modified lattice Boltzmann model with a stochastic relaxation mechanism mimicking "virtual'' collisions between free-streaming particles and solid walls is introduced. This modified scheme permits to compute plane channel flows in satisfactory agreement with analytical results over a broad spectrum of Knudsen numbers, ranging from the hydrodynamic ...
Toschi, F., Succi, S.
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Fractional time derivative on fluid flow through horizontal microchannel filled with porous material
International Journal of Aeronautics and Astronautics, 2023 Fractional time derivative is considered in the description of the unsteady fluid flow through a horizontal microchannel filled with porous material. The resultant governing equations were solved using the Laplace transform technique and the method of ...
Muhammad Kaurangini +2 more
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Modelling Knudsen number effects in suspension high velocity oxy fuel thermal spray
International Journal of Heat and Mass Transfer, 2020 Suspension high velocity oxy fuel thermal spray is a system characterized by supersonic velocities and length scales of particles of the order of nm – µm. As the effects of rarefication become significant the assumptions within the continuum models begin
S. Chadha +2 more
semanticscholar +1 more source
Computing the near-wall region in gas micro- and nanofluidics: critical Knudsen layer phenomena [PDF]
, 2006 In order to capture critical near-wall phenomena in gas micro- and nanoflows within conventional CFD codes, we present scaled Navier-Stokes-Fourier (NSF) constitutive relations.
Reese, Jason M. +8 more
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Modeling of Knudsen layer effects in micro/nanoscale gas flows [PDF]
, 2011 We propose a power-law based effective mean free path (MFP) model so that the Navier-Stokes-Fourier equations can be employed for the transition-regime flows typical of gas micro/nanodevices.
Reese, Jason M. +6 more
core +1 more source
Impact of Improved Design on Knudsen Force for Micro Gas Sensor
Micromachines, 2020 Knudsen force generated by thermally driven gas flow in a microscale structure has been used for gas detection and has shown immeasurable potential in the field of microelectromechanical system (MEMS) gas sensors due to its novel sensing characteristics.
Xiaowei Wang +4 more
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Near-wall effects in rarefied gas micro-flows: some modern hydrodynamic approaches [PDF]
, 2005 Methods for simulating the critical near-wall region in hydrodynamic models of gas micro-flows are discussed. Two important non-equilibrium flow features - velocity slip at solid walls, and the Knudsen layer (which extends one or two molecular mean free ...
Emerson, David +12 more
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Discrete unified gas kinetic scheme for all Knudsen number flows. IV. Strongly inhomogeneous fluids.
Physical Review E, 2020 This work is an extension of the discrete unified gas kinetic scheme (DUGKS) from rarefied gas dynamics to strongly inhomogeneous dense fluid systems. The fluid molecular size can be ignored for dilute gases, while the nonlocal intermolecular collisions ...
Baochao Shan +3 more
semanticscholar +1 more source