Abstract The ocean mixed layer model (OMLM) is improved using the large-eddy simulation (LES) and inverse estimation method. A comparison of OMLM (Noh model) LES results reveals that underestimation turbulent kinetic energy (TKE) flux in causes a negative bias depth (MLD) during convection, when wind stress weak or latitude high. It further found entrainment thickness underestimated. effects al...

Abstract Wind-farm parameterizations in weather models can be used to predict both the power output and farm effects on flow; however, their correctness has not been thoroughly assessed. We evaluate wind-farm parameterization of Weather Research Forecasting Model with large-eddy simulations (LES) wake performed same model. study impact velocity turbulence kinetic energy (TKE) inflow velocity, r...

This work aims at investigating the effects of forest heterogeneity on a wind-turbine wake under neutrally stratified condition. Three types forests, homogeneous (idealized), real having natural heterogeneity, and an idealized strong are considered in this study. For each type, three densities with Leaf Area Index (LAI) values 0.42,1.7, 4.25 investigated. The data estimated from dense site loca...

Large-eddy simulations of turbulent flow in partially filled pipes are conducted to investigate the effect secondary currents on friction factor, first- and second-order statistics large-scale motion. The method is validated first simulated profiles mean streamwise velocity, normal stresses kinetic energy (TKE) shown be good agreement with experimental data. stronger half- three-quarters full c...

We report an experimental investigation of turbulence in bubble plumes released unstratified quiescent water. The focus is to study the detailed turbulent statistics and budget terms equations kinetic energy (TKE), particularly about their distributions radial direction compared those single-phase momentum jets buoyant plumes. Two types diffusers were used generate consisting different sizes po...

Top-down surface mixers are increasingly used in drinking water reservoirs to prevent the development of stratification, control cyanobacteria, and limit sediment release soluble manganese. A targeted field investigation enabled discrimination artificial mixing by from wind convection a shallow (6.6 m), eutrophic reservoir. were effective at reducing vertical temperature dissolved oxygen gradie...

In the framework of dinuclear system model, synthesis mechanism superheavy nuclides with atomic numbers $$Z=112, 114, 115$$ in reactions projectiles $$^{40,48}$$ Ca bombarding on targets $$^{238}$$ U, $$^{242}$$ Pu, and $$^{243}$$ Am within a wide interval incident energy has been investigated systematically. Based available experimental excitation functions, dependence calculated cross-section...

Near-wake characteristics of a turbine play an important role in turbine–wake interactions and performance assessment arrays. In this study, the near-wake flow behind laboratory-scale tidal stream is simulated compared with experimental data. An actuator-line model used to represent rotating blades. Further, two physics-based turbulence corrections are proposed for unsteady Reynolds-averaged Na...

Large-eddy simulation (LES) is performed to investigate the dynamics of flow and canopy motions energy transfer in turbulent flows. Different from traditional approach that models as a continuous medium with drag coefficient prescribed priori , an immersed boundary method together beam model employed explicitly capture individual stems resolve monami. The cases cover broad range stem flexibilit...

For the past two centuries coastal zones have been suffering seagrass loss resulting in a network of vegetated patches which are barely interconnected and may compromise ecological services provided by canopy. To optimize management efforts for successful restoration strategies, questions need to be addressed about what appropriate canopy architectural considerations required under certain hydr...