Titlebook: Structure and Mechanisms of Turbulence I; Proceedings of the S H. Fiedler Conference proceedings 1978 Springer-Verlag Berlin Heidelberg 197

constitutional

Transition in free shear layers,ve flow visualization both in air and water.The results show that two sets of waves one axial one circumferential develop in the shear layer. The details of their development are strongly Reynolds number dependent below a critical value which is around 400 based on the local instantaneous shear laye

传染

Expostulate

Numerical simulation of mixing layer vortices,nd the resulting flow is studied numerically. A spiral structure appears that grows linearly for large values of time. The growth rates obtained agree with the observed values for the experimental layers within 25%.

Arboreal

大方不好

Landlocked

anticipate

tangle

The spanwise structure of the bursting phenomenon,he defect region slowly increases and possibly forms a low-speed streak as observed in visualization studies. The extent of this motion in the spanwise direction has been studied using space-time correlation techniques.

揭穿真相

Model equation calculations of the turbulent flow between rotating cylinders and the structure of aorticity are anti-parallel or parallel.The Reynolds stresses predicted by the model are realizable. The equations are solved and results presented for turbulent flow between concentric rotating cylinders and the isolated turbulent line vortex. Comparison with experiment is generally favorable.

高射炮

A modelling of large eddies in an axisymmetric jet,ood agreement with many experimentally observed flows. Harmonic excitation is applied to the model jet and the changes in frequency and amplitude cause distinct changes in the wavelengths of the jet eddies. This resulting large eddy behaviour is consistent with many features of the non-linear behaviour observed in forced jets.