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波浪冲击
相关语句
  wave slamming
     Study on Wave Slamming by Turbulent Model
     波浪冲击过程的湍流数值模拟
短句来源
     Experimental investigation of instantaneous properties of the flow field of wave slamming
     波浪冲击过程流场变化特性试验研究
短句来源
     In coast and offshore engineering, the safety of the structures whose superstructures located in the splash zone such as piled wharves, shore trestles, oil drilling platforms, etc, have great relation to wave slamming.
     在海岸和近海工程中,近海采油平台、桩基码头和海上栈桥等上部结构位于浪溅区的建筑物的安全与波浪冲击作用关系极大。
短句来源
  wave impact
     Wave Impact Theory and Scale Effect
     波浪冲击压力理论和模比影响的研究
短句来源
     Homogeneous, real soil material and sandy foundation soil are discussed individually, and the condition of wave impact is imitated.
     探讨了均质和实际土体材料以及砂质地基时的海堤-海床动力相互作用情况,并模拟了波浪冲击荷载的作用情况。
短句来源
     This method applies the extended strip theory to establish the nonlinear ship motion equations in regular head seas, obtains stable time course by resolving in time domain, and then pressure vectors will be available. The pressure includes static pressure, incident waves pressure , diffraction pressure , radiation pressure, and wave impact pressure, and changed with instantaneous draft of each intersection.
     该方法应用扩展的切片理论建立迎浪规则波中船舶非线性运动方程,通过时域步进求解获得船舶刚体运动的稳定时历,进而给出与船体各横剖面瞬时吃水相对应的静水压力变化、入射波压力、绕射压力、辐射压力和波浪冲击压力诸分量。
短句来源
     The spectral analysis results of the irregular wave impact pressure on the subface of the structure under various case studies are presented. The distribution of the spectral moment of the impact pressure on the structure along the subface is given. And the influence of different incident wave parameters and relative clearance s/H1/3 on the average spectral moment of impact pressure are discussed.
     给出了不同试验组次的结构物底面所受波浪冲击压力的谱分析结果,得到了结构物底面所受波浪冲击压力的谱矩m0沿结构物底面的分布规律,讨论了入射波波要素和结构物底面距静水面的相对高度s H1 3对作用于结构物底面的冲击压力谱矩m0,avg.
短句来源
     Random wave impact pressures on the underside of the wharf deck are measured in a laboratory wave channel.
     本文通过物理模型试验对不同接岸型式码头上部结构的随机波浪冲击作用进行了研究。
  “波浪冲击”译为未确定词的双语例句
     Some significant conclusions can be made from the model tests by measuring and analyzing the stress distributions with different structural angles (30° and 50°) slopes in the artificial wave tank: (l)The slope can be divided into three sections with the same variation rules, meanwhile, it's helpful for the analysis of theories and numerical calculation.
     模型试验通过将结构面为30°和50°的两种边坡模型布置在人工水槽中,利用波流系统进行升降水试验和波浪冲击试验,并量测岩质边坡的应力变化。 通过分析边坡各测点应力变化,得出了一些有意义的结论:(1)可以将边坡划分成三个应力变化规律相同的区域,为理论数值计算提供依据;
短句来源
     According to the analysis of the w ave impact pressures on the wharf deck with different shore connecting structures, the effect of different shore connecting structures on the impact pressure on wharf deck is discussed.
     比较码头面板所受的随机波浪冲击作用和规则波冲击作用的异同点。 讨论不同接岸型式对码头面板底面冲击压力的特性、分布规律以及冲击压力峰值大小的影响。
短句来源
     The governing equations are Reynolds time-averaged equations and two equations k - model.
     为能反映出波浪冲击过程的湍流特征,以湍流运动方程——雷诺方程,及修正的κ—ε模型封闭雷诺方程为控制方程。
短句来源
     (4)The longer distance between the front of the slope and the water media, the lower stability of the slope in the ascending and descending water level test, the higher stability of the slope in the wave impaction test.
     (4)边坡前部各区域离水介质的距离越大,即结构面倾角越小,边坡在升降水时其稳定性越低,而在波浪冲击时其稳定性越高。
短句来源
     So considering Phragmites communis was the one of best ecological material forecological restoration of degenerating riparian zone form flood control angle.
     因此,从抗洪水和波浪冲击的角度,芦苇是受损河岸水陆带生态修复的最佳生态材料之一。
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  wave slamming
A comparatively more conservative design is to have the shell plating not collapse under wave slamming pressure.
      
If turret moored, a FPSO will see increased likelihood of being subject to larger wave slamming loads, as it heads against the weather.
      
If this vessel is an oil tanker and sails in the North Sea, it may also encounter wave slamming.
      
It can also be used for investigating damages due to wave slamming.
      
Most pertaining analytical studies treat a wave slamming impact as a two-dimensional wedge falling on to calm water.
      
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  wave impact
In order to model a ship hull's response to the impact of surface waves, the two-dimensional problem of wave impact on an elastic beam whose ends are connected by springs with a rigid structure uniformly submerged in a fluid is considered.
      
Experimental investigation of unidirectional flows in a porous medium saturated with liquid under a wave impact
      
The calculated results from wave models indicate that the wave impact on the topography, under the condition of high water level and strong winds, is significant.
      
Vibrating-uplift rocking motion of caisson breakwaters under various breaking wave impact forces
      
The mass-springdashpot model of caisson-foundation system is used to simulate the vibrating-uplift rocking motion of caisson under various types of breaking wave impact forces,i.
      
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This paper shows the level of the standard of longitudinal strengthof ships designed according to the requirement of classification rules ca-nnot be expressed in term of nominal longitudinal bending stress,asunder the same nominal longitudinal bending stress,the probability of fa-ilure may turn out to be quite different.This level can only be expressedin terms of reliability or probability of failure by which it can beexpressed not only qualitatively but quantitatively for purpose of compa-rison and reference.This...

This paper shows the level of the standard of longitudinal strengthof ships designed according to the requirement of classification rules ca-nnot be expressed in term of nominal longitudinal bending stress,asunder the same nominal longitudinal bending stress,the probability of fa-ilure may turn out to be quite different.This level can only be expressedin terms of reliability or probability of failure by which it can beexpressed not only qualitatively but quantitatively for purpose of compa-rison and reference.This paper finally shows the maximum acceptablerisk,as implied in the requirement of longitudinal strength of classificationrules,for dry cargo ships of present day usual size is found to be0.0024.

过去对船舶总纵强度的水准,通常采用其总纵弯曲的名义应力作为衡准。作者认为采用船舶总纵强度的不破坏概率或安全可靠度作为衡量尺度则比之名义应力不仅更为合理而且能提供相对的定量水平。通过本文的分析结果可得出下述结论:船舶在同样的总纵弯曲名义应力水平下,完全有可能出现不同的总纵弯曲强度的破坏概率,也即不同的安全可靠度。所以名义应力不能确切反映总纵强度的水准。作用在船舶上总纵弯矩是随机的。决定载荷是一个复杂的问题,特别是波浪附加弯矩和瞬态的波浪冲击振动弯矩的合成,至今尚未解决。对海船来说,除静水弯矩外,这些弯矩对船舶总强度的破坏概率有主要影响。本文提出下述假设来决定它们的合成问题:船舶在轻载条件下一旦遇到严重不利的极值波浪附加弯矩时,则波浪冲击发生的可能性可认为如此之大,以之可看作是一个必然事件。为了今后对海船总纵强度标准的探讨提供参考,本文对目前船级社钢质海船建造规范规定的总强度要求,进行了分析估算,由此得出万吨级以上干货船的破坏概率约为千分之2.5,或相应的安全可靠度为0.9975。这一安全可靠度度量了现行的万吨级以上的海船干货船可接受的最低可靠度,也即最低总强度标准。同时也不难看出规范规定...

过去对船舶总纵强度的水准,通常采用其总纵弯曲的名义应力作为衡准。作者认为采用船舶总纵强度的不破坏概率或安全可靠度作为衡量尺度则比之名义应力不仅更为合理而且能提供相对的定量水平。通过本文的分析结果可得出下述结论:船舶在同样的总纵弯曲名义应力水平下,完全有可能出现不同的总纵弯曲强度的破坏概率,也即不同的安全可靠度。所以名义应力不能确切反映总纵强度的水准。作用在船舶上总纵弯矩是随机的。决定载荷是一个复杂的问题,特别是波浪附加弯矩和瞬态的波浪冲击振动弯矩的合成,至今尚未解决。对海船来说,除静水弯矩外,这些弯矩对船舶总强度的破坏概率有主要影响。本文提出下述假设来决定它们的合成问题:船舶在轻载条件下一旦遇到严重不利的极值波浪附加弯矩时,则波浪冲击发生的可能性可认为如此之大,以之可看作是一个必然事件。为了今后对海船总纵强度标准的探讨提供参考,本文对目前船级社钢质海船建造规范规定的总强度要求,进行了分析估算,由此得出万吨级以上干货船的破坏概率约为千分之2.5,或相应的安全可靠度为0.9975。这一安全可靠度度量了现行的万吨级以上的海船干货船可接受的最低可靠度,也即最低总强度标准。同时也不难看出规范规定的基本剖面模数 W_0就是为了确保船舶能满足这种可接

As shown by the results of testing and measuring a large number of ships on the three big inland waterways, the noise poll ution caused by inland river ships is rather serious. The adoption of medium and high speed Diesel engines as the main and auxiliary engines is the chief noise source. The steering engine and the propelling system are the noise source at the stern, while the wave's impact of the stem cabins of small--sized ships. Besides, the improper design of the compartments and the poor construction...

As shown by the results of testing and measuring a large number of ships on the three big inland waterways, the noise poll ution caused by inland river ships is rather serious. The adoption of medium and high speed Diesel engines as the main and auxiliary engines is the chief noise source. The steering engine and the propelling system are the noise source at the stern, while the wave's impact of the stem cabins of small--sized ships. Besides, the improper design of the compartments and the poor construction etc. can also increase the noise pollution. Reasonable choice of the noise criterion is an effective method to control the noise pollution. This paper suggests that the details of the criterion should be close to the international regulation. That is, the ships with an overall length greater than 75m should use the same standard as the seagoing vessels do; and for those with a smaller length we may open tolerance by 3 to 5 dB(A), the ships with a length smaller than 30m being excluded. This paper also puts forward several proposals concerning the control of the noise in the engine room.

内河三大水系的大量实船测试结果表明,当前内河船舶的噪声污染相当严重。采用中高速柴油机作为主副机,是主要的噪声源;舵机及推进系统是尾部的噪声源;波浪冲击是小型船首部舱室的噪声源;舱室布置设计的不合理及施工粗糙等等,都能加重噪声污染。合理地制订噪声衡准是控制噪声污染的有效途径。本文建议:衡准指标应向国际上的一般水准靠拢;船长大于75米的内河船,应取海船同样标准;船长较小者,可允许放宽3—5dB(A);对船长小于30米的小船,则可不属于衡准范围。本文还对如何控制机舱噪声问题,提出了若干具体建议。

The hydroelastic analysis method is applied to investigate the structural responses (motions, shearing forces, bending moments etc. ) of ships travelling in regular and irregular head waves. A modified strip theory is proposed to describe the hydrodynamic forces,in which the non-linear effects arising from the non-vertical bow flare, the instantaneous variation of draft and the non-harmonic behaviour of sectional motions are included. The effects due to wave impact, bow emergence, and deck wetness are also considered....

The hydroelastic analysis method is applied to investigate the structural responses (motions, shearing forces, bending moments etc. ) of ships travelling in regular and irregular head waves. A modified strip theory is proposed to describe the hydrodynamic forces,in which the non-linear effects arising from the non-vertical bow flare, the instantaneous variation of draft and the non-harmonic behaviour of sectional motions are included. The effects due to wave impact, bow emergence, and deck wetness are also considered. The equations of motion are solved in time domain by the st-y -step approach. The numerical predictions are compared with the model tests in regular waves. Satisfactory agreement is achieved.

本文采用水弹性分析方法研究船舶在规则波及不规则波中迎浪航行时的结构动力响应(运动、剪力和弯矩等)。确定流体载荷时应用了扩展的切片理论,其中计及由于船体的非直舷、剖面吃水的瞬时变化和船体振荡的非简谐特性所导致的非线性,同时还考虑了波浪冲击、出水和上浪的影响。运动方程是在时域内步进求解。数值计算结果与规则波中的模型试验相比较,符合程度令人满意。

 
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