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hydrodynamic     
相关语句
  水动力
    Study of Hydrodynamic Performance of Rowing and Athletic Performance Evaluation
    赛艇水动力性能和运动员机能的评定研究
短句来源
    CALCULATION OF HYDRODYNAMIC DERIVATIVES AFFECTING MANOEUVRING IN SHALLOW WATER
    浅水中船体操纵水动力导数的计算
短句来源
    Calculation of Hydrodynamic Performance of Propeller-Rudder Combination
    螺旋桨舵组合体水动力性能计算
短句来源
    CALCULATION OF THREE-DIMENSIONAL HYDRODYNAMIC COEFFICIENTS BY SIMPLE GREEN'S FUNCTION TECHNIQUE
    简单Green函数法求解三维水动力系数
短句来源
    Experiment Study and Numerical Calculation of Hydrodynamic Forces and Moments Acting on the High Speed Transom Stern Ships Running Obliquely
    高速方尾船斜航状态的水动力试验研究和数值计算
短句来源
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  流体动力
    On the Measurement and Reckoning of Hydrodynamic Coefficients of Deep Submerged Vehicles with six-freedom-motion
    关于深潜艇六自由度运动的流体动力系数测定和推算
短句来源
    Regressive Analysis of Hydrodynamic Coefficients for Horizontal Fin and Rudder Assembly in Submarines
    潜艇水平稳定翼与舵组合体流体动力系数的回归分析
短句来源
    Calculation for Hydrodynamic Coefficients of Flap-rudder Used on Ships
    船用襟翼舵流体动力系数的计算
短句来源
    HEAVING HYDRODYNAMIC COEFFICIENTS OF COLUMNS WITH FOOTING IN FINITE—DEPTH WATERS
    有限深水中平台脚柱垂荡的流体动力系数计算
短句来源
    A Hydrodynamic Design of Ship Hull Parameters
    船型参数的流体动力设计
短句来源
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  水动力学
    Hydrodynamic calculation and analysis for the 4300 cars Ro-Ro ship launching with pontoon
    4300辆汽车滚装船带浮筒下水动力学计算分析
短句来源
    Hydrodynamic Analysis of Anisotropic Very Large Floating Structure
    正交异性超大浮体的水动力学分析
短句来源
    Numerical prediction of ship hydrodynamic performance at design stage using computational fluid dynamics (CFD) technique is a most important and challenging subject in the field of ship hydrodynamics.
    采用计算流体动力学(CFD)技术实现在船舶设计阶段对船舶水动力性能的精确预报,是船舶水动力学学科中一个具有重大理论和实用意义的、富有挑战性的课题。
短句来源
    Numerical prediction of ship hydrodynamic performance using computational fluid dynamics (CFD) technique at design stage is an important and challenging subject in the field of ship hydrodynamics.
    采用计算流体动力学(CFD)技术实现在船舶设计阶段对船舶水动力性能的准确预报,是船舶水动力学学科中一个具有重大理论和实用意义的、富有挑战性的课题。
短句来源
    The application of CFD in resolving ship hydrodynamic problems results in a new branch in ship hydrodynamics — ship CFD.
    CFD应用于船舶水动力学问题的数值求解,产生了船舶CFD方法。
短句来源
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  流体动力的
    Amethod for the estimation of hydrodynamic forces of fin-rudder on slender body of revolution is presented, based on the results of series model tests which were performed to obtain steady and rotary force derivatives.
    本大综合了细长回转体鳍舵位置导数和旋转导数系列试验研究的结果,提出了鳍舵流体动力的估算方法。
短句来源
    New nondimensional geometric parameters of fin-rudder are introduced, so that the problem of interaction of hydro-dynamic forces between fin-rudder and main body is well resolved. Based on the wing theory and the orthogonal design method used for the analysis of the results of series model tests, a semi-empirical expression for the determination of hydrodynamic forces of fin-rudder is obtained.
    本文采用了一种新的鳍舵几何参数无量纲化方法,较好地解决了主体对鳍舵流体动力的干扰问题,并根据正交设计方法,模型系列试验结果和机翼理论等,推导了估算鳍舵流体动力的半经验表达式。
短句来源
    Considering the effect of the bottom on the hydrodynamic properties of the rudder, the authors are discussing with the help of the numerical value test method that the fluid dynamic force of rudder varies with the distance from the ship bottom to the rudder top.
    文中考虑了船底舵对水动力特性的影响,用数值试验的方法,探讨了船底至舵顶部的距离的变化引起的舵的流体动力的变化。
短句来源
    An unsteady nonlinear vortex-lattice method is presented for calcula-tion of hydrodynamic forces acting on the rudder with tip edge separation. The numerical method is applied to three rectangular rudders with aspectratio 2.4,1.0 and 0.211 respectively.
    本文介绍了一种计算作用在升力面上流体动力的非定常非线性的涡环格栅法,以均匀流中展弦比为2.4,1.0和0.211的三只舵为例分别作了计算,计算中考虑了端部的分离和尾涡的卷曲。
短句来源

 

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  hydrodynamic
The linearity of calibration curve provided by SEKI was similar to that offered by non-bias hydrodynamic injection (HDI) but significantly better than that obtained by EKI.
      
Based on hydrodynamic equations, an equation formulizing the parametric instability was derived.
      
Based on the variational constraint approach, the variational form of Reynolds equation in hydrodynamic lubrication is revised continuously to satisfy certain constraints in the cavitation zone of oil film field.
      
Method of internal 3D flow field numerical simulation for hydrodynamic torque converter
      
The performance parameters of the hydrodynamic torque converter were predicted.
      
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The wake model, suggested by T. Y. Wu in 1962, is linearized and applied to treat the two-dimensional supereavitating or partially cavitating hydrofoil of the arbitrary camberline. The rear end of the cavity in this model, which may also be called as" open type model" in the linearized theory, is regarded as nonclosed. At the downstream of the cavity, there is a wake region stretched to the infinity. For a part of the free streamline near the hydrofoil, the pressure is assumed to be constant and equal to the...

The wake model, suggested by T. Y. Wu in 1962, is linearized and applied to treat the two-dimensional supereavitating or partially cavitating hydrofoil of the arbitrary camberline. The rear end of the cavity in this model, which may also be called as" open type model" in the linearized theory, is regarded as nonclosed. At the downstream of the cavity, there is a wake region stretched to the infinity. For a part of the free streamline near the hydrofoil, the pressure is assumed to be constant and equal to the saturated vapor pressure. For the free streamline downward of the former part, the pressure gradually increases and finally reaches the value of that of the infinitely forward undisturbed stream. There exists the wake region and thus the stagnation (point (singular points) is avoided at the rear end of the cavity. The application of this model provides a smooth continuous transition of the solution from the fully eaviteted flow to fully wetted flow. The results, obtained in this paper, may be used to estimate the hydrodynamic forces as a first approximation in the transitional state, for it is commonly known that the result, obtained with the closed model, is invalid, as the cavity length approaehing to that of the chord. Besides, there are only two unkown constants in the author's solution, thus the calculation can be simplified.

在本文中把吴耀祖(T.Y.Wu)在1962年提出的尾流模型加以线性化,并用来处理任意拱弧形状的二元超空泡初局部空泡水翼。这个模型在线性化理论中亦可称为开式模型,空泡末端是作为不封闭的。而在空泡的下游有一尾流区伸展到无穷远后。自由流线靠近水翼的一部分上,压力假定为常数,等于鲍和蒸汽压力。在前述部分下游自由流线上,压力逐渐增加,到无穷远后恢复到来流压力。由于空泡末端后存在着尾流区,这样则末端上避免了驻点(即奇点)。应用这个模型可使解从超空泡流连续过渡到无空泡流。本文所得的结果可以作为一级近似来估计过渡状态的水动力,因为封闭式模型的结果在空泡长度趋向弦长时是失效的。此外,本文的解中只出现二个待定常数,因此计算可以简化。

In this paper, we have generalized the "Prago-Figiaivsky's" wing theory of small aspect ratio, have established the formulas of the coefficients of normal force, induced resistance and the center of pressure. We have also suggested a way to evaluate the lower limit of the critical angle of attack. After re-calculating the hydrodynamic forces of a rectangular plate, we have applied this method to rudder behind the ship and propeller. Results are in agreement with the known experimental or theoretical results....

In this paper, we have generalized the "Prago-Figiaivsky's" wing theory of small aspect ratio, have established the formulas of the coefficients of normal force, induced resistance and the center of pressure. We have also suggested a way to evaluate the lower limit of the critical angle of attack. After re-calculating the hydrodynamic forces of a rectangular plate, we have applied this method to rudder behind the ship and propeller. Results are in agreement with the known experimental or theoretical results.

本文推广了布拉哥和费佳也夫斯基的短翼理论,建立了计算短翼法向力、诱导阻力和压力中心的公式,提出了估计临界攻角的方法,重算了矩形平析所受的流体动力。并把此方法应用到位于船和桨后的舵上去,与已有的实验结果和计算数据进行了比较,符合的程度是满意的。

When a glider moves in a seaway, it yields oscillations. M. D. Haskind discussed the non-steady motions of small curved planing plate by using the theory of complex functions, and obtained the general expression of hydrodynamic forces. In this paper, the pressure distribution of hydrodynamic forces on the planing plate was obtained with another method. First, in solving a pulsating pressure point δ(x)cos(wt ε) on the free surface, the expressions of its normal induction velocity v(x, t; U, ω, ε)...

When a glider moves in a seaway, it yields oscillations. M. D. Haskind discussed the non-steady motions of small curved planing plate by using the theory of complex functions, and obtained the general expression of hydrodynamic forces. In this paper, the pressure distribution of hydrodynamic forces on the planing plate was obtained with another method. First, in solving a pulsating pressure point δ(x)cos(wt ε) on the free surface, the expressions of its normal induction velocity v(x, t; U, ω, ε) for two cases of β<1/4 and β>1/4 were obtained. Then the planing plate was replaced by an unknown pressure distribution and obtained its induction velocities. By equating the normal induction velocity on the planing plate to its normal velocity of pitching and heaving motions, obtained the integral equations of the unknown pressure distribution. To derive the formulas of heaving force and pitching moment, the integral equations were solved by turned into a system of infinite linear algebraic equations, also the solubility of this system of infinite equations was discussed. Finally, a numerical example for the pressure distribution on the planing plate was calculated by taking its first six-terms of Fourier expansion series.

滑行艇在海浪中运动时,会产生搖摆。哈斯金德用复变函数理論讨論了微弯滑行板的非定常运动,获得了計算水动力的一般公式。本文用另一种方法考虑这个問題,并計算了滑行板面上水动力的压力分佈。文中首先研究了液面上脉动点压δ(x)cos(ωt+ε)的解,求出了它的法向誘导速度v(x,t;U,ω,ε),分β<14和β>1/4两种情形得到其表达式,然后以一未知的压力分佈代替滑行板,求出該分佈压力系的誘导速度。令板面处的法向誘导速度与滑行板由纵搖和升沉运动所产生的法向速度相等,便得到求解未知压力分佈的积分方程式。文中討論了用福里哀级数表示未知压力分佈的函数,并把积分方程的求解問題变成一无穷线性代数方程组的求解問題,又进一步論述了該代数方程組的可解性条件。文中求出了升沉力和纵搖力矩的表达公式。最后,取压力分佈函数的前六項福里哀級数項,对一个具体数值例子进行了計算,求得了滑行板面上的压力分佈。

 
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