Rip currents are strong water channels flowing away from the shoreline. They can occur on any shore with breaking waves. play a significant role in changing topography of shallow regions by transporting large amounts bed material offshore. Moreover, they pose danger for people living nearshore zones and surfers cause hundreds deaths annually worldwide. Therefore, rip current generation characte...

This paper considers a 3-D thermos-mechanical analysis to investigate the effect of welding direction, tack weld, root gap and process on deformation in hub flange pipe joint. Multi-pass for single ‘V’ butt-weld joint geometry is simulated weld path used with realistic bead. 3 different direction (2-path, 4-path diagonally, from bottom) are analyzed how presence or absence affects was analyzed....

Tidal energy is a very rich Marine resource, which has high concentration, small geometric scale and strong predictability. The research status, development utilization of tidal current turbine at home abroad are expatiated, two methods for hydrodynamic characteristics turbine, including numerical calculation simulation experiment, introduced, certain significance to the performance optimizatio...