Effect of Plateau Length on the Transformation of Internal Solitary Waves
學年 105
學期 2
出版(發表)日期 2017-04-01
作品名稱 Effect of Plateau Length on the Transformation of Internal Solitary Waves
著者 Cheng, Ming-Hung; Hsieh, Chih-Min; Hwang, Robert R.; Su, Shih-Feng
著錄名稱、卷期、頁數 International Journal of Engineering and Technology 9(2), p.89-96
摘要 The propagation and dissipation of internal waves over continental shelf bathymetry are complex phenomenon. The waveform would be re-generated while transmitting a submerged deep-shallow-deep topography. To study the effect of the marine topography on the evolution of an internal wave, numerical simulation is utilized to perform the flow evolution and waveform inversion of a large depression internal wave over a trapezoidal obstacle with different plateau. A finite volume based Cartesian grid method is adopted to solve the Reynolds averaged Navier-Stokes equations using a k-ε model for the turbulence closure. Numerical results reveal that the re-generated waveform does not occur due to baroclinic wave. The shorter plateau length would induce strong vortex in back of the obstacle. Moreover, the wave amplitude, vorticity and turbulent kinetic energy are dissipated significantly. However, the level of the phenomenon decreases as the plateau length is larger than the wavelength.
關鍵字 Internal solitary wave;RANS equation;k-ε turbulent model;flow field
語言 en
ISSN 1793-8236
期刊性質 國外
收錄於 EI
國別 SGP
出版型式 ,紙本

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/109149 )