查询词典 hydrofoil

But Alexeiev quickly realized that a hydrofoil can only go so fast due to the drag created by the dense water through which it "flies."

它是曾经被制造的最大的 WIG 交通工具。

With a cavitating model established for N-S equations from cavitation theory, cavitation evolution on the surface of a hydrofoil is developed: incipience of cavity, cavity growing, reentrant flow appearing, cavity retracting, shedding and smaller broken cavities moving downwards with the main flow.

根据空化流原理，建立了基于N-S方程求解的空化模型，利用这个模型计算了空化在翼型表面的演化过程：初生、长大、形成回注水流、空穴回缩、减小、脱落，以及小空泡随主流向下游运动的现象。

At first, the kind of high-speed craft and its current situation are introduced in this paper. Through analyze and compare the characteristics of their performance, three kinds of high-speed craft are selected to be optimized. They are hydrofoil-gliding craft, wave-piercing catamaran and frigate, which power equipment of propulsion system are the common screw, pitch-adjustable screw and water-jet propeller.

本文首先介绍了高速船种类及其推进器的发展现状，通过分析比较各种船型的性能特点，选取了三种典型的高速船(翼滑艇、穿浪艇和护卫舰)并分别以普通螺旋桨、可调距螺旋桨和喷水推进器作为三种船型等动力装置。

We have established following unique intellectual property positions :"contra-rotating propeller in nozzle"、"shafting anti-twist labyrinth contra-rotating propeller"、"hydrofoil podded propulsion with contra-rotating propeller"and so on.

公司拥有多项自主知识产权，&全回转对转桨前后置导管推进装置&；&迷宫切割式轴系防缠绕推进装置&；&吊舱型对转桨牵引式水翼组合推进装置&等专利技术。

Established a kind of analysis theory in time domain to analyze the fluid-structure interaction of aircushion-hydrofoil catamarans.

建立了一套时域内的气态流场-液态流场-船体结构间的流固耦合理论和相应的分析模型。

Author collected and read a great mount of materials about high performance ships, especially about the hydroelastic theory and its related theories, and on the basis of it author developed a kind of theory to analyze the fluid-structure interaction of hybrid catamaran in time domain. This theory could be applied not only for the hybrid aircushion-hydrofoil catamarans, but also for other traditional ships and marine structures.

作者收集、阅读和分析了大量的国内外有关高性能船舶尤其是有关其流固耦合分析理论及相关理论方面的文献，在此基础之上，针对未来船型的发展趋势，提出了一套时域内的有关气-翼复合型高速双体船的流固耦合分析理论和数值计算方法，该分析理论和计算方法还同样适用于气垫船、水翼船等单体或双体常规船舶以及其它海洋工程结构物的流固耦合分析。

A high-speed camera is used to visualize the flow structures,and Laser Doppler Velocity is employed for velocity measurement.The osculations are conducted on the two-dimensional hydrofoil section,based on a single-fluid model of the cavitation:the liquid/vapor mixture is considered as a homogeneous fluid whose eompsition is regulated by mass tranfer equation.The RNG k-ε turbulence model with modified eddy viscosity coefficient is used for computing,and the coefficient is related to the vapor and liquid densities in cavitated regions for simulating the cavitating flow.

实验采用高速录像技术观察了云状空化随时间的结构变化，应用 LDV 测量了云状空化条件下翼型周围的速度分布；采用 N-S 方程和基于空泡动力学方程的空化模型计算了绕水翼云状空化流场，湍流模型采用了 RNG k-ε方程，为了改善空化流动的计算精度，引入了一种与空化区域水汽相密度相关的系数，对湍流涡黏性系数进行了修正。

The osculations are conducted on the two-dimensional hydrofoil section,based on a single-fluid model of the cavitation:the liquid/vapor mixture is considered as a homogeneous fluid whose eompsition is regulated by mass tranfer equation.The RNG k-ε turbulence model with modified eddy viscosity coefficient is used for computing,and the coefficient is related to the vapor and liquid densities in cavitated regions for simulating the cavitating flow.

实验采用高速录像技术观察了云状空化随时间的结构变化，应用 LDV 测量了云状空化条件下翼型周围的速度分布；采用 N-S 方程和基于空泡动力学方程的空化模型计算了绕水翼云状空化流场，湍流模型采用了 RNG k-ε方程，为了改善空化流动的计算精度，引入了一种与空化区域水汽相密度相关的系数，对湍流涡黏性系数进行了修正。

And then, the effects of the hydrofoil type and the ratio of lift to buoyancy on the static stability of HYSWAS with fixed hydrofoils while foil borne is investigated. On the other hand, the static stability of HYSWAS on different operation states is also analyzed.

在此基础上，计算分析了基于非自控水翼的不同水翼型式及升力浮力比对HYSWAS翼航状态横向恢复力矩的影响规律，同时，研究了不同航行状态下HYSWAS的稳性特征。

Theoretical analysis of cavitation phenomena around two-dimensional hydrofoils is conducted firstly and cavitation zone profile around NACA 4412 hydrofoil is iteratively solved.

本文首先对二维翼型周围的空化现象进行了理论分析，并迭代求解了NACA4412翼型周围空化区形态。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。