<総合論文>境界要素法による波動場解析における開境界条件とその応用
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概要
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The wave field with a constant depth and the linearized water surface condition is governed by the Helmholtz equation. This equation can be solved numerically with Boundary Integral Method implemented by the Green's integral equation. In this method, suitable boundary conditions should be established corresponding to the types of boundary. The present paper proposes new boundary conditions for open boundary, partial reflection boundary and incident-absorbing boundary. These conditions do not depend on the incident angle, the number of wave components and the types of waves (plane waves and cylindrical waves). Numerical results show the complete validity of these conditions. Additionally, as an example of analysis of actual port, East-Tomakomai Port is analyzed, where large ship motion at mooring quay is reported. For an incident wave with the same period of ship motion, clear standing waves are formed in the channel and a node of the standing waves is located at the mooring position. This result says the large ship motion may occur as a result of resonant interaction between the mooring ship and the horizontal motion of fluid.
- 北海道東海大学の論文
- 1998-03-25