Two-dimensional (2-D) spectra of the streamwise velocity component, measured at friction Reynolds numbers ranging from 2400 to 26000, are used to refine a model for the logarithmic region of turbulent boundary layers. Here, we focus on the attached eddy model (AEM). The conventional AEM ...
The model is alsoshown to provide a clear physical explanation for the trends in the data. The limits ofapplicability of the model are also discussed. 展开 关键词: boundary layer wall turbulence attached eddy hypothesis high Reynolds number ...
According to Townsend's attached eddy hypothesis (AEH), a boundary layer flow is comprised of wall-attached eddies, but to extract the part of the flow whose statistical behaviours are well described by the AEH is not at all straightforward. The objective of this work is to extract the part...
Further, the wake behind the high aspect ratio sea star model is larger than the wake behind the low aspect ratio sea star model. These observations are qualitatively consistent with the drag force measurements shown in Fig. 1a: the sea star models generate more drag than the spherical dome,...
Performance of popular turbulence models for attached and separated adverse pressure gradient flows The performance of four popular eddy-viscosity turbulence models under adverse pressure gradient conditions is investigated. The Baldwin-Lomax, the Johnson... FR Menter - 《Aiaa Journal》 被引量: 302发表...
The attached eddy hypothesis of Townsend [16] is the basis of a model of the logarithmic region in wall-bounded turbulent flows, in which the inertially dominated part of the flow is described by a hierarchy of self-similar eddying motions that extend to the wall. The hypothesis has gained...
1994 Wall turbulence closure based on classical similarity laws and the attached eddy hypothesis. Phys. Fluids 6 (2), 1024-1035.Perry, A.E.; Marusic, I.; Li, J.D. (1994): Wall turbulence closure based on classical similarity laws and the attached eddy hypothesis. Physics of Fluids, ...
1995 A wall-wake model for the turbulence structure of boundary layers. Part 1. Extension of the attached eddy hypothesis. J. Fluid Mech. 298, 361-388.Perry, A. and Marusic, I., "A wall-wake model for the turbulence structure of boundary layer. Part 1. Extension of the attached eddy...
Thus the influence of anisotropy of turbulence on the modeled terms in the governing equations for the Reynolds stresses is accounted for directly. The anisotropy invariant Reynolds stress model (AIRSM) is implemented and validated in different finite-volume codes. The standard wall-function approach ...
FLOW TURBULENCE AND COMBUSTIONKumar V, Frohnapfel B, Jovanovic´ J, Breuer M, Zuo W, Hadzic´ I, et al. Anisotropy invariant Reynolds stress model of turbulence (AIRSM) and its application to attached and separated wall-bounded flows. Flow, Turbul Combust 2009;83: 81-103....