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Unsteady ship waves in shallow water of varying depth based on Green–Naghdi equation by Jiankang Wu; Bo Chen is a Engineering article available to read on EtoBox.
What is Unsteady ship waves in shallow water of varying depth based on Green–Naghdi equation about?
Based on Green-Naghdi equation this work studies unsteady ship waves in shallow water of varying depth. A moving ship is regarded as a moving pressure disturbance on free surface. The moving pressure is incorporated into the Green-Naghdi equation to formulate forcing of ship waves in shallow water. The frequency dispersion term of the Green-Naghdi equation accounts for the effects of finite water depth on ship waves. A wave equation model and the finite element method (WE/FEM) are adopted to solve the Green-Naghdi equation. The numerical examples of a Series 60 (C B = 0.6) ship moving in shallow water are presented. Three-dimensional ship wave profiles and wave resistance are given when the ship moves in shallow water with a bed bump (or a trench). The numerical results indicate that the wave resistance increases first, then decreases, and finally returns to normal value as the ship passes a bed bump. A comparison between the numerical results predicted by the Green-Naghdi equation and the shallow water equations is made. It is found that the wave resistance predicted by the Green-Naghdi equation is larger than that predicted by the shallow water equations in subcritical flow (F r
Who reads Unsteady ship waves in shallow water of varying depth based on Green–Naghdi equation?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Jiankang Wu; Bo Chen
- Publisher
- Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0029-8018)
- Published
- 2003
- Language
- EN
- Field
- Engineering (Physical Sciences)