Viscosity and velocity slip coefficients for gas mixtures: Measurements with a spinning rotor gauge

1999 ◽  
Vol 17 (1) ◽  
pp. 235-241 ◽  
Author(s):  
J. A. Bentz ◽  
R. V. Tompson ◽  
S. K. Loyalka
Keyword(s):  
Velocity Slip ◽  
Gas Mixtures ◽  
Slip Coefficients

Velocity slip and translational nonequilibrium of ternary gas mixtures in free jet expansions

1977 ◽  
Author(s):  
R. CATTOLICA ◽  
R. GALLAGHER ◽  
J. ANDERSON ◽  
L. TALBOT
Keyword(s):  
Velocity Slip ◽  
Gas Mixtures ◽  
Free Jet

scholarly journals Viscous slip coefficients for binary gas mixtures measured from mass flow rates through a single microtube

2016 ◽  
Vol 28 (9) ◽  
pp. 092001 ◽  
Author(s):  
H. Yamaguchi ◽  
K. Takamori ◽  
P. Perrier ◽  
I. Graur ◽  
Y. Matsuda ◽  
...  
Keyword(s):  
Mass Flow ◽  
Gas Mixtures ◽  
Flow Rates ◽  
Mass Flow Rates ◽  
Slip Coefficients

scholarly journals Higher order slip according to the linearized Boltzmann equation with general boundary conditions

2011 ◽  
Vol 369 (1944) ◽  
pp. 2228-2236 ◽  
Author(s):  
Silvia Lorenzani
Keyword(s):  
Boltzmann Equation ◽  
Collision Operator ◽  
Velocity Slip ◽  
Lattice Boltzmann Methods ◽  
Linearized Boltzmann Equation ◽  
Potential Applications ◽  
Microscale Flows ◽  
Scattering Kernel ◽  
Linearized Collision Operator ◽  
Slip Coefficients

In the present paper, we provide an analytical expression for the first- and second-order velocity slip coefficients by means of a variational technique that applies to the integrodifferential form of the Boltzmann equation based on the true linearized collision operator and the Cercignani–Lampis scattering kernel of the gas–surface interaction. The polynomial form of the Knudsen number obtained for the Poiseuille mass flow rate and the values of the velocity slip coefficients are analysed in the frame of potential applications of the lattice Boltzmann methods in simulations of microscale flows.

Couette flow for a gas with a discrete velocity distribution

1976 ◽  
Vol 76 (2) ◽  
pp. 273-287 ◽  
Author(s):  
Henri Cabannes
Keyword(s):  
Kinetic Theory ◽  
Boundary Conditions ◽  
Velocity Distribution ◽  
Couette Flow ◽  
Flow Problem ◽  
Kinetic Equations ◽  
Velocity Slip ◽  
Theory Model ◽  
Slip Coefficient ◽  
Slip Coefficients

We consider a kinetic theory model of a gas, whose molecular velocities are restricted to a set of fourteen given vectors. For this model we study the Couette flow problem, the boundary conditions on the walls being the conditions of pure diffuse reflexion. The kinetic equations can be integrated by quadrature under the assumption that the walls have opposite velocities and equal temperatures. The presence on the walls of tangential velocities leads to the consequence that the velocity slip coefficient does not in general vanish when the Knudsen number goes to zero.Considering the same problem again after the suppression of tangential velocities, we obtain formulae for the velocity and temperature slip coefficients which generalize results of Broadwell (1964b), and which agree qualitatively with experiments.

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