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Characterization of the Fluctuating Reynolds-Stress
This paper presents a comprehensive investigation of fluctuating Reynolds-stress gradients in a self-similar adverse-pressure-gradient turbulent boundary layer (SS-APG-TBL) at the verge of separation. These gradients constitute the nonlinear forc-ing that drives the resolvent operator and are therefore essential for elucidating thespatial structure andSun, Bihai +4 more
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Realizable algebraic Reynolds stress closure
Chemical Engineering Science, 2009Abstract The normalized Reynolds (NR-) stress is a symmetric, non-negative, dyadic-valued operator. An analysis of the hydrodynamic equation governing velocity fluctuations of a constant property Newtonian fluid shows that this operator is related to a prestress operator that is also symmetric and non-negative.
Karuna S. Koppula +2 more
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Reynolds Stress Models for Shock-Turbulence Interaction
2019A systematic deficiency of current turbulence models which are based on the Reynolds-averaged Navier-Stokes equations (RANS) is their inability to correctly predict the interaction of turbulence with shocks. This is because RANS models do not account for the unsteady motion or fragmentation of the shock wave within the interaction zone.
Karl, Sebastian +2 more
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Reynolds stress budgets of low Reynolds number pipe expansion flow
1996The turbulent flow in a sudden pipe expansion is of theoretical and practical importance. Although the flow domain is quite simple and the separation point is fixed at the step, the flow itself is complex and its accurate prediction remains a challenge for turbulence modellers still today.
C. Wagner, R. Friedrich
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Reynolds Stress Deflections of the Bivane Anemometer
Journal of Applied Meteorology, 1980Abstract We show that a bivane anemometer or other elevation angle sensing device records a nonzero mean angle when responding to cross-correlated fluctuations in a mean wind. Our analysis shows how this mean offset can be used to derive the wind-aligned Reynolds stress directly. This theory is applied to a historical data set.
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An iterative data-driven turbulence modeling framework based on Reynolds stress representation
Theoretical and Applied Mechanics Letters, 2022Yufei Zhang, Haixin Chen, Song Fu
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Reynolds stress anisotropy in flow over two-dimensional rigid dunes
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2020Subhasish Dey +2 more
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On the Effects of the Reynolds Stress on Hydrodynamic Stability
ZAMM - Zeitschrift für Angewandte Mathematik und Mechanik, 1956openaire +2 more sources