Numerical tests of a new molecule-dependent momentum transport equation

L. Jirkovsky and L.Ma. Bo-ot

Physica A: Statistical Mechanics and its Applications, 2008, vol. 387, issue 21, 5012-5016

Abstract: It is shown that a new incompressible fluid equation is obtained by inclusion of a new dimensionless coupling parameter in the momentum transport equation derived in [L. Jirkovsky, L. Bo-ot, Momentum transport equation for the fluids using projection–perturbation formalism and onset of turbulence, Physica A 352 (2005) 241–251] from the Boltzmann kinetic equation where the Boltzmann collision integral includes inelastic interactions of quantum origin among the particles of the fluid. Numerical results from the equation for the plane and circular Poiseuille flows are consistent with the observations. The numerical tests also manifest a difference in the onset of turbulence between the flat plates and the circular pipe flow systems. Although all obtained velocity profiles are flattened at the center–a feature of turbulence–the results demonstrate greater stability of the velocity profiles in the circular pipe flow.

Keywords: Momentum transport; Onset of turbulence; Poiseuille flow (search for similar items in EconPapers)
Date: 2008
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:387:y:2008:i:21:p:5012-5016

DOI: 10.1016/j.physa.2008.05.006

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