..., Wuhan, China *Corresponding Author ABSTRACT In ocean environment with density stratification, internal waves are generated when underwater vehicle moves. These internal waves will propagate through the water layers up to the free surface, which can be detected by Synthetic Aperture Radar (SAR). Based...

..., an unsteady RANS equation has been solved with realizable k − ε model and a weak density stratification has been applied. Firstly, the grid convergence study has been conducted to verify the numerical method and appropriate grids were selected. And the density of the fluid was defined as a function...

... production logging production control equation reservoir simulation production monitoring two-dimensional cylinder engineering journal coefficient reservoir surveillance reservoir characterization vortice gradient cylinder ocean engineering frequency seawater stratification...

... frequency. The linearly distributed stratification of density is achieved by specifying the distribution of water temperature. Take the Joubert BB2 submarine model as an example, the complex flow field when operating near the free surface is simulated and analyzed. The effect of the body slenderness on free...

... on the thermal stratification background, turbulence is implemented with a Shear Stress Transport (SST) based Delayed Detached Eddy Simulation (DDES) approach. Two kind of simulations are performed in both non-stratified and stratified conditions. Drag force, wakes as well as coherent vortex structures...

... ABSTRACT The vortex shedding was simulated by viscous CFD technique when the linearly stratified fluid past a hydrofoil at a constant speed. Based on thermal density current model, the linear stratification of density was achieved by specifying the distribution of temperature. The RANS method...

..., the waves' characters on the ocean surface are studied theoretically and numerically. The volume of fluid (VOF) method coupled with the Airy and Stokes wave theories has been used to determine the free surface effect of water. The density stratification of the water is set by patching the upper and lower...

... outfall of Tarumi Sewage Treatment Plant near Akashi Strait is considered. The effluent dispersal in the northeastern Osaka Bay is two-layered and highly reversible in the upper and lower layers due to stratification influenced by freshwater input mainly from Yodo River. The overall effluent load...

..., tidal currents have been simulated to develop at the straits of Rio-Antirrio, and when the wind is also blowing, nearshore gyres develop, the sense of rotation of which is dictated by the wind direction. During the early summer months, starting from June, stratification develops and the flow becomes...

... with homogeneous density and two layers density stratifications were executed and analyzed. The images of CO 2 bubble plume were illuminated by two sets of halogen lamps. And the CCD (Charged- Coupled Detector) digital camera was used to grab the images. The digitized images of CO 2 bubble plume were processed...

... forcing method with various sets of energy containing scales, energy dissipation rates, and stratification intensities. Diffusion of massless dye was solved in the reproduced turbulent field and vertical turbulent diffusivity was calculated from its concentration distributions. The calculated diffusivity...

... that the stratification and concentration of nutrients in this area depends on the Kuroshio fluctuating, and that nutrients intrude to Osaka Bay through the bottom layer as Kuroshio current is detached far from the shore. INTRODUCTION Osaka Bay is a semi-enclosed inland sea and one of the most polluted coastal seas...

... ABSTRACT: This study investigates an effect of density stratification on turbulence structures and turbulent heat transfer in a turbulent flow with a free surface. A direct numerical simulation (DNS) technique is applied for this purpose to fully developed turbulence in an open channel. Both...

... laizhou bay summer wind magnitude tide residual circulation stratification circulation liaodong bay bohai sea upstream oil & gas bohai strait residual current tidal residual current energy flow rate surface layer renewable energy winter wind Typical Seasonal Circulation...

... stratification, such as construction of bottom mound, pumps, and bubble generators (Lemckert and Imberger, 1993). Among them, the Density Current Generator (DCG) made some success at Hazama-Inlet of Gokasho-Bay in Mie Prefecture, Japan (Ohuchi, 1998a), where red tide has been insignificant for at least 4 years...

... the edge of the anchorage. vertical distribution breakwater stratification water quality western port mouth new nagasaki fishery port observation station thermal stratification ocean energy field observation seasonal variation port mouth water management tidal current residual current...

... and upward velocity are compared with the field experimental data of Fannelop & Sjoen (1980) and Milgram (1983). Numerical simulation results are found in agreement with the field experimental data. Effects of leakage gas flow rate and stratification of ambient seawater on the bubble plume behaviors...

... of the discharge depth increases when the discharge densimetric Froude number is enlarged. The oscillation of produced water discharge trajectory is more significant as the gradient of stratification of ambient water columns becomes larger. INTRODUCTION Due to the increase of drilling activities on the offshore...

... passage along the channel. Differing layer depths and density stratifications are used in the experimental programme in order to cover a range of parameters. Particle Image Velocimetry (PlY) is used to obtain the velocities within a section of the wave. The velocity values are compared with those obtained...

... by observations (Holloway, 1996), the vertical distribution of the tidal velocity field was investigated. This part of the study highlighted an Important feature: stratification Induces a shearing of tidal current which Is maximal In the thermocline. The Internal structure of the tidal current was then compared...