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hydrodynamic problems
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  流体动力问题
     The existence of the irregular frequencies is a kind of special phenomena in solving the linear hydrodynamic problems for floating bodies in the frequency domain by the source-sink distribution method.
     不规则频率的出现是源汇分布求解浮体在频域中的线性流体动力问题中的一种特殊现象。
短句来源
  水动力学问题
     The thesis employs the method of CFD to solve the hydrodynamic problems in the field of ocean engineering.
     本论文应用CFD方法求解了海洋工程领域中的流体水动力学问题
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
     There are many new hydrodynamic problems proposed in the course of design and construction of bridges over estuarine and coastal waters.
     跨海桥梁工程的设计与建设提出了许多新的水动力学问题
     Fast evaluation of the time-domain Green function for finite water depth and its derivatives with sufficient accuracy is the key to the application of time-domain approach in the finite depth hydrodynamic problems.
     精确快速地求取有限水深格林函数及它的导数是应用时域法求解有限水深水动力学问题的关键。
短句来源
     The results from the numerical analysis employed show that the recommened method is a very effective and accurate one for analyzing hydrodynamic problems with complex boundary conditions.
     数值算例表明,本文建议的方案对于分析复杂边界条件下的水动力学问题是十分精确和有效的.
短句来源
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  流体力学问题
     LEAST-SQUARE POINT COLLOCATED MESHLESS METHOD BASED ON KERNEL REPRODUCING FOR HYDRODYNAMIC PROBLEMS
     流体力学问题基于核重构思想的最小二乘配点法
短句来源
     In this paper, some hydrodynamic problems with 2-dimension for Spar platform with mooring system in waves are discussed from the ocean engineering point of view.
     本文从海洋工程流体力学的角度探讨了带有锚泊系统的轻型单柱平台在波浪作用下所遇到的二维流体力学问题
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  “hydrodynamic problems”译为未确定词的双语例句
     The modeling results show that the SPH method is feasible to simulate the hydrodynamic problems with complex free surfaces, and the present numerical wave flume is suited to the close-up examinations of the near- shore wave problems.
     应用数值波浪水槽研究了孤立波与直立墙相互作用、孤立波在斜坡上爬落变化,模拟了波浪破碎的卷破波形态,表明SPH方法适宜于复杂自由表面问题的模拟,本文建立的数值波浪水槽能应用于近岸波浪问题的精细研究。
短句来源
     Hydrodynamic problems in hydraulic machinery and their variational principles
     水力机械水动力学命题及其变分原理的建立
短句来源
     In this paper, the Laplace transformation is introduced. By use of Variational Integral method, the variational principles and generalized variational principles of hydrodynamic problems for the incompressible viscous fluids are established in the convolution form.
     本文通过引入Laplace变换,应用变积运算方法,建立了不可压缩粘性流体力学的变分原理及其广义变分原理.
短句来源
     Equivalent Bernoulli differential equation in the reference frame of accelerated transla-tion and that rotating in constant angular velocity is introduced.Whereby hydrodynamic problems canbe solved conveniently。
     对加速平动参照系、等角速转动参照系等一类非惯性系引入了等效伯努利方程,可使这一类非惯性系的流体动力学问题方便地得到解决.
短句来源
     In this paper the hydrodynamic problems of hot water boilers are theoreticallyanalysed;
     本文以新型水火管锅壳式热水锅炉为例,对热水锅炉水动力问题进行了全面理论分析;
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  hydrodynamic problems
To the leading order in the Peclet number, the thermal and hydrodynamic problems are uncoupled.
      
Although the technique is general, we concentrate on its applications to hydrodynamic problems, specifically the transition to turbulence.
      
Hydrodynamic problems of fluid flow with three-phase contact lines (for example, solid body-liquid-gas or solid body and two nonmixing liquids) are of special interest.
      
Elastothermo-hydrodynamic problems in the theory of lubrication
      
Numerical realization of a variational method of solving several hydrodynamic problems
      
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The hydrodynamic problem of the high speed impact between a water slug with curved head and a rigid surface assumes time-dependent inviscous compressible flow of fluid. It is governed by the equation of continuity and momentum for the liquid in cylindrical coordinates with axial symmetry, the isentropic equation of state for water. They are solved numerically by combined Eulerian and Lagrangian approaches, for a non-slip wall condition. The results of numerical calculation are indicated as follows. When...

The hydrodynamic problem of the high speed impact between a water slug with curved head and a rigid surface assumes time-dependent inviscous compressible flow of fluid. It is governed by the equation of continuity and momentum for the liquid in cylindrical coordinates with axial symmetry, the isentropic equation of state for water. They are solved numerically by combined Eulerian and Lagrangian approaches, for a non-slip wall condition. The results of numerical calculation are indicated as follows. When the peak pressures are reached, the peak lateral velocities that are more than the impact velocity are reached instantly; the act time is independent of the impact Mach number approximately in lower impact Mach number, the peak pressures and the peak velocities increase along the radial direction outwards, and some experimental evidence supports this result.

曲面头部的水弹高速冲击刚性表面的流体动力学问题,可以归结为无粘性、可压缩的不定常流动问题,受轴向对称园柱座标的连续和动量方程、水的等熵状态方程支配。考虑不可滑移的刚壁边界条件,用欧拉——拉格朗日结合的数值计算方法,进行数值求解。计算结果表明:在压力峰值形成的同时,引起了比冲击速度大得多的侧向速度;在较低的冲击马赫数范围内,作用时间近似地和冲击马赫数无关;压力峰值和测向速度都是沿着径向向外递增,这和实验结果一致。

In this paper, the variational principles of hydrodynamic problems for the incompres-sible and compressible viscous fluids are established. These principles are principles of maximum power lossed. Their generalized variational principles are also discussed on the bases of Lagrange multiplier methods.

本文建立了不可压缩和可压缩粘性流体力学问题的变分原理,即最大功率消耗原理和它们的广义变分原理。

The existence of the irregular frequencies is a kind of special phenomena in solving the linear hydrodynamic problems for floating bodies in the frequency domain by the source-sink distribution method. It was pointed out in the past investigations that the phenomenon comes from the continuation of the outer fluid field to the imaginary inner fluid field.Although the existencs of irregular frequencies does not seriously influence the applicability of the source-sink distribution method to normal seekeeping...

The existence of the irregular frequencies is a kind of special phenomena in solving the linear hydrodynamic problems for floating bodies in the frequency domain by the source-sink distribution method. It was pointed out in the past investigations that the phenomenon comes from the continuation of the outer fluid field to the imaginary inner fluid field.Although the existencs of irregular frequencies does not seriously influence the applicability of the source-sink distribution method to normal seekeeping calculations, it may have evident effects on the computational results of the second-order steady wave drifting forces and bi-harmonic wave forces as shown in the present paper.Based on the previous investigations, this paper briefly describes the method to remove the irregular frequencies and further point out the necessity of the removing in the computation of the second-order wave forces.

不规则频率的出现是源汇分布求解浮体在频域中的线性流体动力问题中的一种特殊现象。以往的研究指出,这一现象源自于导出源汇分布法时的流场开拓。 尽管对线性流体动力问题来说,不规则频率的存在并不严重地影响源汇分布法的实用价值,但本文的计算结果表明,不规则频率将显著地影响二阶定常漂移力和二阶倍频波浪力的计算结果。

 
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