Turbulent-laminar patterns in plane Poiseuille flow
نویسندگان
چکیده
منابع مشابه
Mean Flow of Turbulent - Laminar Patterns in Plane Couette Flow By DWIGHT BARKLEY
A turbulent-laminar banded pattern in plane Couette flow is studied numerically. This pattern is statistically steady, is oriented obliquely to the streamwise direction, and has a very large wavelength relative to the gap. The mean flow, averaged in time and in the homogeneous direction, is analysed. The flow in the quasi-laminar region is not the linear Couette profile, but results from a non-...
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Plane Couette flow presents a regular oblique turbulent-laminar pattern over a wide range of Reynolds numbers R between the globally stable base flow profile at low R < Rg and a uniformly turbulent regime at sufficiently large R > Rt. The numerical simulations that we have performed on a pattern displaying a wavelength modulation show a relaxation of that modulation in agreement with what one w...
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Two recent works have shown that at small Knudsen number (K) the pressure and temperature profiles in plane Poiseuille flow exhibit a different qualitative behavior from the profiles obtained by the Navier-Stokes equations. Tij and Santos [J. Stat. Phys. 76, 1399 (1994)] used the Bhatnagar-Gross-Kook model to show that the temperature profile is bimodal and the pressure profile is nonconstant. ...
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ژورنال
عنوان ژورنال: Physics of Fluids
سال: 2014
ISSN: 1070-6631,1089-7666
DOI: 10.1063/1.4900874