Surface Velocity Field of Internal Waves Generated by a Sphere Horizontal Moving in Stratified Fluid
MENG Jing
WANG Shuya
CHEN Xu
Abstract：We put experiment in a 3D tank filled with two-layer fluid to investigate the characteristics of surface velocity field of internal waves generated by a shphere moving horizontally at,on andunder the pycnocline.The velocity vorticity by the picture of CCD.When the sphere moves in different depth,the surface crest lines shape as Kelvincrestlines and the angle decreases with the increasing of velocity of the sphere.When the sphere moves at the pycnocline.When the sphere moves at the pycnocline,the absolute value of divergence increases first and then decreases with the velocity of the sphere,and vorticity of surface velocity field is close to zero.
Keywords：internal waves generated by moving SourcePIV technologyvelocity fielddivergence fieldvorticity field
Publication Date：2017-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：7( 45-51 )