复杂海洋环境地效翼船气动升力与水动载荷研究

项目名称： 复杂海洋环境地效翼船气动升力与水动载荷研究

项目编号： No.51279030

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 水利工程

项目作者： 宗智

作者单位： 大连理工大学

项目金额： 82万元

中文摘要： 地效翼船利用地面增升效应，在海面上1-6米飞行，航速高达200-300节，是军民两用高科技船,被称为第四种交通工具。尽管应用前景广阔，但目前地效翼船的发展遇到技术障碍。本项目重点研究技术障碍中的关键科学问题，主要分为两部分：复杂海洋环境下地效翼船的气动升力研究与水动载荷研究。气动升力研究的是：非线性波浪海况下、非定常来流气象下、以及考虑粘性影响的地效翼升力理论；水动载荷研究的是：地效翼船入水砰击载荷、出水卸载与不稳定性、以及和波浪撞击产生的拍击载荷。这些科学问题的解决有助于突破技术障碍。项目研究以近固壁地效翼升力理论为基础，以水池模型试验为验证，通过和非线性波浪、非定常来流、粘性理论成果的结合，建立复杂海洋条件下近水面的地效翼升力理论；以Karman砰击理论为框架，以边界元法为工具，建立地效翼船入水砰击、出水卸载以及波浪拍击的理论模型和预报方法。

中文关键词： 地效翼；近水面升力；砰击；离散涡；波浪

英文摘要： Making use of lifting augmented effect near solid and water surface, a wing-in-ground effect (WIG) ship is able to achieve a speed of 200-300 kn about 1-6 m above the surface. It is thus called the Fourth Transportation Vehicle. Although having a potential for wide applications in the future, WIG ships encounter technological obstacles during their current development. The present project aims to solve the scientific problems present in the technological obstacles, which fall into two categories: aerodynamic lifting and hydrodynamic loading in face of complicated marine environment. The aerodynamic lifting involves the study of the lifting theory of a wing in ground effect in the presence of nonlinear water waves, unsteady incoming flows (gust) and viscosity. The hydrodynamic lifting involves the study of water-entry slamming loading, water-exit off-loading and impact by large waves experiences by a WIG ship during landing, taking-off and encounter with a large wave. Solutions to these scientific problems may help to tackle the technological obstacles. In the project, the lifting theory in the proximity of a smooth solid surface, which is the starting point, will be generalized to the one in the proximity of nonlinear water waves and unsteady incoming flows in the presence of viscosity. the theory and method wil

英文关键词： Wing-in-ground effect；in proximity of free surface；slamming；discrete vortex method；water waves