Zobrazeno 1 - 10
of 658
pro vyhledávání: '"MENEVEAU, CHARLES"'
To aid in prediction of turbulent boundary layer flows over rough surfaces, a new model is proposed to estimate hydrodynamic roughness based solely on geometric surface information. The model is based on a fluid-mechanics motivated geometric paramete
Externí odkaz:
http://arxiv.org/abs/2406.05062
Autor:
Ayala, Manuel, Sadek, Zein, Ferčák, Ondřej, Cal, Raúl Bayoán, Gayme, Dennice, Meneveau, Charles
Numerical prediction of the interactions between wind and ocean waves is essential for climate modeling and a wide range of offshore operations. Large Eddy Simulation (LES) of the marine atmospheric boundary layer is a practical numerical predictive
Externí odkaz:
http://arxiv.org/abs/2401.12188
Autor:
Viggiano, Bianca, Basset, Thomas, Bourgoin, Mickaël, Cal, Raúl Bayoán, Chevillard, Laurent, Meneveau, Charles, Volk, Romain
Turbulence is prevalent in nature and industry, from large-scale wave dynamics to small-scale combustion nozzle sprays. In addition to the multi-scale nonlinear complexity and both randomness and coherent structures in its dynamics, practical turbule
Externí odkaz:
http://arxiv.org/abs/2310.04330
We introduce an analytical model that describes the vertical structure of Ekman boundary layer flows coupled to the Monin-Obukhov Similarity Theory (MOST) surface layer representation, which is valid for conventionally neutral (CNBL) and stable (SBL)
Externí odkaz:
http://arxiv.org/abs/2309.06650
Drag for wall-bounded flows is directly related to flux of spanwise vorticity outward from the wall. In turbulent flows a key contribution arises from cross-stream "vorticity cascade" by nonlinear advection and stretching of vorticity. We study this
Externí odkaz:
http://arxiv.org/abs/2302.03738
Publikováno v:
Phys. Rev. Lett. 130, 154001 (2023)
Fluid elements deform in turbulence by stretching and folding. In this work, by projecting the material deformation tensor onto the largest stretching direction, the dynamics of folding is depicted through the evolution of the material curvature. Res
Externí odkaz:
http://arxiv.org/abs/2301.10341
Large Eddy Simulations (LES) are used to study the effects of veer (the height-dependent lateral deflection of wind velocity due to Coriolis acceleration) on the evolution of wind turbine wakes. Specifically, this work focuses on turbines that are ya
Externí odkaz:
http://arxiv.org/abs/2210.09525
Volume-resolving imaging techniques are rapidly advancing progress in experimental fluid mechanics. However, reconstructing the full and structured Eulerian velocity and pressure fields from sparse and noisy particle tracks obtained experimentally re
Externí odkaz:
http://arxiv.org/abs/2210.04849
Autor:
Morra, Pierluigi1 (AUTHOR), Meneveau, Charles1 (AUTHOR), Zaki, Tamer A.1 (AUTHOR) t.zaki@jhu.edu
Publikováno v:
Scientific Reports. 6/4/2024, Vol. 14 Issue 1, p1-15. 15p.
A large eddy simulation wall model is developed based on a formal interpretation of quasi-equilibrium that governs the momentum balance integrated in the wall-normal direction. The model substitutes the law-of-the-wall velocity profile for a smooth s
Externí odkaz:
http://arxiv.org/abs/2107.02329