...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ocean Engineering >A seakeeping analysis method for a high-speed partial air cushion supported catamaran (PACSCAT)
【24h】

A seakeeping analysis method for a high-speed partial air cushion supported catamaran (PACSCAT)

机译：高速局部气垫双体船（PACSCAT）的海上维护分析方法

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The partial air cushion supported catamaran (PACSCAT) is a type of air cushion assisted catamaran with planing demihulls. Both the air cushion and the demihulls can strongly affect the seakeeping performance. Although there exist some methods for analyzing the seakeeping of other air cushion supported vessels considering the effects of both the air cushion and demihulls, they can take considerable computational time. In this paper, an efficient numerical method is presented, which is formed by combining the 2.5D theory for solving hydrodynamics of demihulls with simplified wave-equation for solving aerodynamics of pressurized air to analysis the seakeeping performance of the high-speed PACSCAT. In the method, the cushion pressure is determined by using adiabatic gas law together with boundary conditions including the craft motion, free surface elevation, fan flows and air leakage. Two models are proposed for air leakage: constant leakage area and varying leakage area linearly related to ship motions and free surface elevation. The results obtained by the newly formulated method are compared with the experimental data, showing that the numerical results have reasonable agreements with experimental ones.
机译：局部气垫支撑双体船（PACSCAT）是一种带有滑行半身的气垫辅助双体船。气垫和消亡船都可以严重影响海上航行性能。尽管存在一些考虑到气垫和消亡船的影响来分析其他由气垫支撑的船舶的航行状况的方法，但是它们会花费大量的计算时间。本文提出了一种有效的数值方法，该方法是将2.5D理论用于求解船身的流体力学，并将简化的波方程与求解压缩空气的空气动力学相结合，从而分析高速PACSCAT的航海性能而形成的。在该方法中，通过使用绝热气体定律以及包括飞行器运动，自由表面高度，风扇流量和空气泄漏的边界条件来确定垫层压力。针对空气泄漏提出了两种模型：恒定泄漏面积和与船舶运动和自由表面高度线性相关的变化泄漏面积。将该新方法获得的结果与实验数据进行比较，表明数值结果与实验结果具有合理的一致性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号