TURBULENCEBradshawmotionIn his classic 1971 text, Peter Bradshaw refers to turbulence as "the most common, the most important and the most complicated kind of fluid motion."~1 Now, more than 40 years later, the claim remains easily justifiable. Turbulence is likely familiar to anyone who has ...
近壁面层湍流猝发行为中抛射和外交换对颗粒物的飞起有支配作用,导致的瞬时雷诺切应力足以使颗粒物脱离地表进入空中。 Quadrant analysis is used to investigate the signal of the wall-bounded turbulence simulated i...
Despite its great scientific and technological importance, wall-bounded turbulence is an unresolved problem in classical physics that requires new perspectives to be tackled. One of the key strategies has been to study interactions among the energy-containing coherent structures in the flow. Such inter...
Wall-bounded turbulence at high Reynolds numbers. Measurements are reported that give new insight into the behavior of turbulent wall-bounded flows at high Reynolds number. Turbulent pipe and boundary laye... M Vallikivi - Princeton University. 被引量: 0发表: 2014年 Reynolds Number Effects in Wa...
Direct simulations have become indispensable tools in turbulence research, and, in the last two decades, especially so for the study of wall-bounded turbulence. Early simulations dealt mostly with the viscous and buffer layers near the wall, because their Reynolds numbers had to be necessarily ...
Consequently, we evaluated existing nonlinear two-equation turbulence models based on our DNS of streamwise and wall-normal rotating channel flows. Using the results of evaluation, we have improved the modeled expression for Reynolds stress, in which a new cubic-type nonlinear model has been ...
This article discusses the description of wall-bounded turbulence as a deterministic high-dimensional dynamical system of interacting coherent structures, defined as eddies with enough internal dynamics to behave relatively autonomously from any remaining incoherent part of the flow. The guiding principle is...
ER D-TYPE ROUGHNESS NUMERICAL STUDY OF WALL-BOUNDED TURBULENCE OVER D-TYPE ROUGHNESSNUMERICAL STUDY OF WALL-BOUNDED TURBULENCE OVER D-TYPE ROUGHNESSYves DubiefPierre ComteMarcel Lesieur
In particular, in both cases turbulence collapse occurs when Lu~τ/v ≤ 100, suggesting that this is a local process,independent of the details of the outer flow. Analysis of the spectra and energy budgets shows that stable stratification leads to an increase in normalized production,dissipation...
de Silva CM, Baidya R, Khashehchi M, Marusic I (2012a) Assess- ment of tomographic PIV in wall-bounded turbulence using direct numerical simulation data. Exp Fluids 52(2):425-440De Silva CM, Baldya R, Khashehchi M, Marusic I (2012) Assessment of tomographic PIV in wall-bounded ...