查询词典 hydrodynamic

The effect of Reynolds number on rudder hydrodynamic performance is also analyzed. Up to the stall angle the computed lift and drag agree well with measurements and other author's calculations, whereas stall angle, lift and drag beyond the stall angle are slightly under-predicted. The solver is used to investigate laminar and turbulent separated flows around a 6: 1 prolate spheroid at high incidence angles and their effects on hydrodynamic forces. The second separation flows are successfully identified in both laminar and turbulent flow simulations.

应用所开发的求解器，以6：1长椭球体为算例计算了回转体在大攻角下定常斜航运动时的三维粘性流场及水动力，对层流流动和湍流流动分别进行了计算，分析了层流与湍流分离流动和涡旋产生的特点及其对水动力的影响；计算结果与他人的试验和计算数据比较，吻合程度良好，表明应用本求解器能够正确模拟这种以层流／湍流分离流为主的复杂粘性流动，得到相当精确的水动力，检验和验证了该求解器精确模拟回转体在大攻角下的粘性分离流动和计算水动力的能力。

According to a survey of HDD development and its current situation at home, a new kind of equipment for hydrodynamic deep drawing has been developed, which was constructed on the basis of a conventional single-action press with general hydrodynamic deep drawing die sets.

在对充液拉深技术的发展和国内具体情况调查的基础上，研制了基于通用单动液压机的通用充液拉深模架型式的充液拉深装备，整个装备由模架、液压控制系统和计算机自动控制系统等三部分组成，实现了充液拉深成形过程的液室压力和压边力的实时控制。

The calculation results show that the hydrodynamic forces of purely heaving and pitching and its dimensionless frequency presente better linearity relation, and which indirectly verifies that this calculation method can be used to calculate the hydrodynamic coefficients of complicated shape submergible vehicle.

计算结果表明，纯升沉运动和纯俯仰运动的水动力与运动无因次频率呈现较好的线性关系，间接验证了所提出的计算方法适用于复杂外形潜器的水动力系数计算。

The computation of the hydrodynamic interaction between a truncated cylinder and a spheroid and the one between ISSC TLP and a barge indicates that the major reduction in computation time and required memory is achieved, which makes it possible to perform multibody hydrodynamic analyses on personal computers with the precorrected-FFT method.

圆柱与椭圆半球间以及张力腿平台与箱形驳船间的水动力相互作用计算结果表明，采用pFFT方法，计算时间与占用内存大幅度减少，这使得在PC机上进行多体水动力分析成为可能。

With the help of some investigation data about the research area before the project ,this article describes some distinctions about the Rushan Bay's sedimentation power in such ways .First of all ,it mainly uses tidal current power as well as wave power to analyse sediment condition in research area .The contents contain :the relation between distribution of sediment and hydrodynamic elements; sediment discharge of unit width and longshore sediment transport ,analysis of sediment transport tendency ;comparison of sea chart in different time with AutoCAD、Suffer、VB tools, analysis of erosion and siltation ;description of marine physiognomy and its relation with hydrodynamic elements .

本文通过工程建设前期的有关调查资料，采用如下方法对乳山湾的沉积动力特征进行研究：首先，文章以潮流动力为主，结合波浪动力对研究区的泥沙状况进行了分析，分析内容包括：沉积物平面分布及其与水动力因素关系；口门附近水下动力地貌分析，揭示其形成与水动力因素的关系；通过单宽输沙、沿岸输沙计算，对泥沙运移趋势进行分析；利用AutoCAD、Suffer、VB等工具，采用海图水深值对比的方法，分析乳山湾海底蚀淤状况。

Formulas are derived to compute hydrodynamic pressures or hydrodynamic perssure influence matrices on dams using series development and linear superposition theorem with nonvertical upstream face、the compressibitily of water、the effect of absorption of the reservoir bottom ect. being taken into account.

利用级数展开和线性叠加原理，推导了坝迎水面倾斜、库水具有可压缩性、库底具有吸收性等多种情形下，重力坝迎水面上动水压力和动水压力影响系数矩阵的计算公式。

The main researches are as follows:(1) The formatian of hydrodynamic film in rolling deformation zone depends on oil viscosity, rolling speed and inlet conditions, which influence hydrodynamic film thickness, pressure, friction force and slip forward.

整个研究工作包括以下几个方面： 1 研究了轧制变形区形膜基本机制的流体动力学理论与实践，分析了轧制油粘度、轧制速度以及咬入条件对流体润滑形膜厚度的影响，建立了流体润滑轧制变形区膜厚、压力、摩擦力、前滑的模型，首次提出了用稳定轧制因子判断流体润滑轧制过程是否稳定和轧件表面质量的方法。

To effectively detect the ship hydrodynamic pressure signal from wind wave background, according to the characteristic difference between the ship hydrodynamic pressure signal and the wave noise, a target detection method is used on the AR model and the artificial neural network.

为了有效地从风浪背景中检测舰船水压场信号，根据舰船水压场信号和波浪噪声信号的差异，以时间序列的AR模型理论为依据，采用基于AR模型和神经网络的舰船水压信号检测方法。

For some typical ship manoeuvring motions in restricted waters, numerical study on simulation of the viscous flow and calculation of the hydrodynamic forces is carried out by solving the RANS equations:(1) Numerical study on the viscous flow and the hydrodynamic forces on a ship in oblique motion in shallow water.

本文针对如下几种典型的限制水域中的船舶操纵运动，通过求解RANS方程，对其粘性流场和水动力进行了数值研究：(1)浅水域船舶斜航运动的粘性绕流场及水动力数值计算研究。

The Qinshui basin presents NEE synclinoria structure, the marginal area of which has disadvantages for CO2 storage because of welldeveloped faults and fractures, coal mining and a strong hydrodynamic condition; while the centre of which provides good advantages for CO2 storage due to its stable structure, favorable regional caprocks and weak hydrodynamic condition.

沁水盆地为一NNE复向斜构造，其边缘地区由于断裂发育、强水动力条件和煤矿的开采，不利于CO2埋藏。盆地中心区稳定的构造环境、弱水动力条件及良好的区域性盖层为CO2埋藏提供了很好的保存条件。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。