Web10 de abr. de 2024 · The dominant near-wall structure of Newtonian turbulence is wavy streamwise vortices. Using direct simulations in channel flow, we illustrate how these are affected by viscoelasticity. We observe occasional nearly quiescent “hibernating” intervals with very weak, and weakly streamwise-dependent structure, separated by intervals of … Web2 de out. de 2024 · The gas-dynamic and heat-exchange behaviours of air flows in gas-dynamic systems have a significant impact on the efficiency and environmental performance of most technical equipment (heat engines, power plants, heat exchangers, etc.). Therefore, it is a relevant task to obtain reliable experimental data and physical …
(PDF) On the Dynamics of Near-Wall Turbulence - ResearchGate
Web10 de abr. de 2024 · The experiment was performed in a flow loop, specially designed for the research on wall turbulence and coherent structures in the facilities of the interdisciplinary center of fluid dynamics (NIDF). The flow loop consists of a horizontal 6 in. diameter, 10 m long pipe, operating in a closed system. Web12 de abr. de 2024 · Dynamic hump is an active control method, which has been proved to be able to suppress laminar flow separation on the suction surface of high-loaded low-pressure turbine (LPT) blades at low Reynolds number (Re). This paper further discusses the effectiveness of dynamic hump with different parameters for flow separation control. … chsld meaning
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Web5 de jun. de 2024 · This suggests rapid interlayer migration in the wall direction, causing increased particle turbulence intensities in near-wall regions. A local flow topology … Web23 de out. de 2013 · Using a variety of techniques, including direct tracking of the structures, it is shown that an important characteristic of wall-bounded turbulence is temporally … WebThe present work will enrich the knowledge of the boundary vorticity dynamics, where some interesting properties of the near-wall Laplacians will be presented for the first time. All … description of boreal forest