... separation points, and the lift coefficient variation were investigated. The results showed that the presence of an oblique truncation angle caused the separation point on the pressure surface to move towards the leading edge, resulting in an accelerated flow separation and the creation of larger vortices...

.... The velocity components and the characteristic of the vorticity around breaking region predicted by CFD are compared with the experimental data. The results show that the present high-fidelity modeling by AMR-DLB approach can give relatively good predictions of the nonlinear phenomena in bow wave breaking. KEY...

... framework. METHOD The vorticity in an ideal fluid has the properties similar to that of a substance. Vorticity in an ideal fluid can be transported passively with the flow just like a substance, and Lagrangian method can make the most of this property. The vortex method of Lagrangian framework can...

... geometry navier-stoke equation expansion grid vorticity pitch distribution wake model accuracy tsr calcagni project danilo calcagni Proceedings of the Thirty-third (2023) International Ocean and Polar Engineering Conference Ottawa, Canada, June 19-23, 2023 Copyright © 2023 by the International...

... with shear current and non-vanishing vorticity over a flat bed JangRyong Shin Offshore structure design department, Daewoo Shipbuilding & Marine Engineering co., LTD Geoje, Korea ABSTRACT presented with a Fourier expansion. When the Euler equations are presented with stream function and vorticity for 2D...

... touboul representation interaction equation coupled-mode system vorticity application dispersion characteristic cms propagation upstream oil & gas boundary condition expansion belibassakis water wave bathymetry variable bathymetry variable bathymetry region conjunction...

... on the overall performance of a finite-span wing and clarify the related flow mechanism is beneficial for the potential application of this technique in the design of modern pumps and propulsions. finite-span wing vorticity spanwise vorticity spanwise location wavelength computational domain...

... propose a motion calculation method for the floating body based on 2D vortex method using fluid velocity and vorticity as unknown variables. Appling this method to motion calculation of a rectangular floating body, we confirmed its effectiveness through comparison between experimented and calculated...

... ABSTRACT Vortex method is a numerical calculation method for a viscous fluid in time domain, which can consider the vorticity creation from body surface and diffusion of the vorticity into the fluid. To apply this method to the actual design of a floating body with fins installed to reduce its...

... due to vortex shed from the fin. flat plate pimplefoam efd fin kinetic energy field middle right calculation water channel flow field simplefoam computation cfd propeller experiment kinetic energy turbulence kinetic energy vorticity turbulence model boundary layer velocity...

... and horizontal planes were presented for two aspect ratios, namely 2.0 and 0.5. The results showed the core of the longitudinal recirculation region (bubbles) varied at different planes for aspect ratio 2.0 and did not vary for aspect ratio 0.5. The difference of vortices showing up between aspect ratio 2.0...

... to restructured effect. By comparing with different obstacle shapes, the decrease of transmitted amplitude and vorticity in trapezoid is larger than that in ridge. INTRODUCTION Internal solitary waves (ISWs) are the important phenomenon in the ocean with density stratified fluid. They usually generated by tide...

... ABSTRACT A direct numerical method is proposed to simulate nonlinear water waves with nonzero constant vorticity in a two-dimensional channel of finite or infinite depth. Such a vortical distribution represents a background shear current that varies linearly in the vertical direction. Our...

... well understood so it is of great significance to study the ship bow breaking waves. At present, the hydrodynamic experiment is the main way to study the ship bow wave breaking. In the formation of ship bow wave, the considerable vorticity originally at the toe was generated near the free surface...

... varies with depth and its shape will determine the vorticity profile. If this vorticity varies with depth, the wave will become rotational and, as a result, the classical wave theories become invalid. The present study has considered such cases, investigating the effects of both favourable and adverse...

.... The turbine load is replaced for the orifice load in order to simplify the problem. In analysis of the wave motion, vortex method which can consider fluid viscosity is used. Vorticity layer model and Core-Spreading method are used in order to calculate vorticity creation from body surface and diffusion...

... the feature of vorticity for both free surface and vortex shedding in the wake. A 2D circular cylinder horizontally placed beneath a free surface subject to both laminar and turbulent flow was numerically studied using OpenFOAM in this paper. The main purpose of this study is through the investigation...

... ABSTRACT In this study, vorticity analysis is carried out on the ECMWF reanalysis data of sea surface wind speed, to identify the track of tropical cyclones (TCs) in the Northwest Pacific Ocean region over a period of three years (2013–2015). The maximum wind speed in the adjacent...

... of the vorticity field and the bed shear stress. Introduction Oscillatory flows over 3-D ripples are of practical as well as scientific interest because of their relevance to beach processes (Hara & Mei, 1990). Surface waves in the coastal zone induce oscillatory flow motions in the vicinity of the seabed...

... Abstract The characteristics of eddies in the Port of Sakai Senboku caused by the Nankai Trough Earthquake were studied. The index of the vorticity in this study where stable navigation may become impossible is 2.0 × 10 −3 s −1 . The state of tsunami changes dramatically after the third...