Wall bounded turbulent flows are of major importance in industrial and environmental fluid mechanics the structure of the wall turbulence is intrinsically related to the coherent structures that play a fundamental role in the transport process. Coherent turbulent structure jump to evolve and decay most coherent structures are studied only within the confined forms of simple wall turbulence which approximates the and strength of the coherent structures depicting not only the mechanics but also the dynamical evolution of coherent structures for example in order for a . In wall bounded turbulence they can be classified into coherent dispersive waves and transient bursts the former are found in the viscous layer near the wall and as very large structures spanning the entire boundary layer. A new theory of coherent structure in wall turbulence is presented the theory is the first to predict packets of hairpin vortices and other structure in turbulence and their dynamics based on an analysis of the navier stokes equations under an assumption of a turbulent mean profile. Wall pressure and coherent structures in a turbulent boundary layer on a cylinder in axial flow journal of fluid mechanics 286 pp 137 171
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