WebJan 18, 2007 · Hot-wire data acquired in a high Reynolds number facility are used to illustrate the need for adequate scale separation when considering the coherent structure in wall-bounded turbulence. It is found that a large-scale motion in the log region becomes increasingly comparable in energy to the near-wall cycle as the Reynolds number … WebKolmogorov length scale with wall scaling across turbulent boundary layers. Data ... shown that the logarithmic scaling of the turbulence intensity is limited to a small region of the flow and viscous and eddy cutoff corrections are required to reproduce these statistics. This highlights that there are other important contributions to spatial
Scaling of the streamwise turbulence intensity in the context of …
WebPHYSICS OF FLUIDS26, 035107 (2014) Universality and scaling phenomenology of small-scale turbulence in wall-bounded flows Liang Wei, 1,a) Gerrit E. Elsinga,2,b) Geert Brethouwer, c) Philipp Schlatter, 1,d) and Arne V. Johansson e) 1Linne FLOW Centre and Swedish e-Science Research Centre (SeRC), KTH Mechanics,´ SE-100 44 Stockholm, … WebIn fully developed bulk turbulence, kinetic energy is injected into the fluid at the large (forcing) spatial scale L and dissipated by viscosity at the smallest scale in turbulence: the Kolmogorov scale (12). At intermediate spatial scales r≪ ( r ≪ L), in the so-called inertial range, the kinetic energy is transferred from larger to small- refurbish a car battery
On the validity of the quasi-steady-turbulence hypothesis in ...
WebApr 12, 2024 · Special attention is paid to the effects of small-scale resolution on the quality and reliability of the data, in view of recent theoretical work V. Yakhot and K. R. … WebApr 14, 2024 · The scale-up technology of anaerobic fermentation stirring equipment is worthy of attention. Computational fluid dynamics (CFD) simulations were used to study … WebSmall-scale turbulence has been an area of especially active research in the recent past, and several useful research directions have been pursued. Here, we selectively review this work. The emphasis is on scaling phenomenology and kinematics of small-scale structure. refurbish a cast iron tub