摘要
在本文中：（１）引进反映气垫兴波实质的、以气垫面积平方根Ｓｃ为特征长度的傅氏数Ｆｒｓ＝Ｖ／ｇＳｃ，改造著名的纽曼———波尔图谱所表示的兴波阻力系数ＣＷ为互相独立的两个参数Ｆｒｓ和Ｌｃ／Ｂｃ为函数，这样更合理、使用更方便；（２）推导出运动气垫下的水表面（内水面）变形与气垫兴波阻升比之间的简单关系式。利用纽曼———波尔图谱就可以方便地确定不同长宽比的气垫、在任何航速下的水表面变形，而气垫兴波引起的水表面变形是确定气垫船航行姿态的基础；（３）阐述最常用的计算由气垫和侧壁共同作用的侧壁气垫船兴波总阻力的工程近似方法———相当宽度法的物理实质，利用船模试验资料确定相当宽度法适用的范围。
The new handbook has following features: (1)Introduced the Froude number F rs =V/gS c,which reflects the essential of wave making by the air cushion, with square root of area of air cushion S c as the characteristic length; Transformed the wave resistance coefficient Cw presented by the famous Newman-Boll spectrum into two independent parameters Frs and Lc /Bc. This is proved more reasonable and easy to use. (2)Derived a simple equation for relation between the deformation of the water surface under motive air cushion and the air cushion wave resistance/lifting ratio. By using Newman-Boll spectrum the air cushions of different length-breadth ratios and the deformation of the water surface at any speed can be easily determined. The deformation of water surface due to air cushion wave making is the base for determining the running conditions of the air cushion vehicle. (3)Explained the physical substance of the engineering approximation method-the equivalent breadth method which is most widely used to calculate the total wave making resistance generated by the air cushion and side walls of the surface effect ship. The applicable range of the equivalent breadth method is determined by after comparing various model testing records.
出处
《船舶》
北大核心
1999年第1期54-62,共9页
Ship & Boat
关键词
气垫船
兴波
兴波阻力
Resistance of air cushion vehicle\ Wave making, Wave making resistance
