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摩擦项
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  friction term
     The bottom friction term in tidal wave dynamic equations is significant to the numerical result, but horizontal turbulent friction term is insignificant to it.
     潮波动力学方程中的底摩擦项对数值结果影响较大,而水平湍摩擦项对数值结果的影响不甚明显。
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     The model takes the bond-graph model of sectionalized-centralized parameter of a general pipeline as the basis, compares with distributed parameter model and the method of characteristic in pipeline, adds in the dynamic friction term.
     此模型以一般管路分段集中参数键图模型为基础,通过与分布参数模型和管路特征线法的对比研究,在模型中增加了动态摩擦项
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     The balance between equation terms indicates that, the solutions are stable when the wind-stress term reaches a balance of the bottom friction term or β term.
     对方程各项大小的计算表明,当风应力强迫主要用来平衡摩擦项或β项时,解是稳定的;
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     This paper discusses the calculation method of transient flow with constant temperature for high-pressure gas pipeline based on characteristic line, considering friction term, inertia term and gravity term.
     对高压燃气管道考虑了摩擦项、惯性项、重力项的等温不稳定流动,用特征线法的计算方法进行了探讨。
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     It is different from the Munk's ocean circulation theory that we keep the meridional friction term in the linearized vorticity equation, which is based on the fact that the meridional friction term caused by the strong shear at the ACC's stream axis is equivalently important as the β effect term.
     与Munk的大洋环流理论不同,在我们所考虑的线性化的涡度方程中保留了经向摩擦作用。 这是基于绕极流流轴处的强剪切产生的经向摩擦项与β效应同等重要的判断。
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  “摩擦项”译为未确定词的双语例句
     (3) Effect of terrain increases ground rough and tonsure of terrain press and fiction correspond enhance frictional damp effect.
     (3)地形作用相当于增加了地面粗糙度,地形压力梯度项与摩擦项地叠加,相当于使摩擦阻尼作用增大,地形强迫作用使下边界层从上至下风速减小,风向向左偏转。
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     On the Relations among the Difference Schemes, Bottom Friction Forms and the Numerical Stability for 1-d Unsteady Water Flow Equations
     关于一维非恒定流方程的差分格式、底摩擦项形式和数值稳定性的关系
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     It is analysed in this paper that the relations among the difference schemes, bottom friction forms and the numerical stability for unsteady water flow eqs. The authbr showed some important results as follows: (a) the numerical stability of a difference scheme can not always be improved by introducing a bottom friction item into it;
     本文分析了一维非恒定流方程的差分格式、底摩擦项形式和数值稳定性之间的各种关系,论证了:(a)在格式中加入底摩擦项并不一定提高稳定性;
短句来源
     (b) the bottom friction forms for a nonsymmetric numerical scheme must be different from that for a symmetrical one;
     (b)非对称型格式和中心差分格式应采用不同形式的底摩擦项;
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     the wall friction is represented in terms of the velocity gradient and therefore, the troubles faced in the correction with the friction are overcome.
     将壁面摩擦项用速度梯度适当表示出来,从而克服了因考虑摩擦项带来的困难。
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  相似匹配句对
     (E)(m times)a.
     X(E)(m )a.
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     A Preliminary Study on Pupils' Comprehension of the Phenomenon and Conception of Friction
     学生理解摩擦现象和摩擦力概念的一初步研究
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     The Initial Explore of the Friction Electron Theory
     摩擦电子论初探
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     A research on the mucti rope friction gasket
     螺旋摩擦衬垫
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     Proof of term formula of n.
     n的公式的证明 ;
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  friction term
For instance, in the low saturation limit the frictional force contains, in addition to the ordinary Doppler friction term, a term that can be interpreted as Sisyphean friction.
      
We treat the rotational diffusion within the Langevin model where the molecules are driven by a stochastic torque and hindered by a friction term.
      
In this model the molecule is driven by a stochastic torque and hindered by a friction term.
      
A one-dimensional Langevin Equation in which the friction term and the stochastic force term depend nonlinearly on the velocity is presented.
      
The inelastic energy losses have been taken into account by means of a friction term proportional to the projectile velocity and depending on the instantaneous local electronic density experienced by the projectile.
      
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The bottom friction plays an important role in the interaction between tidal constituents. To study the interaction of the constituents through the friction, the quadratic bottom friction term is expanded into a Fourier series form. Many useful results are obtained.Starting from the nonlinear momentum equations, we obtain the mechanical energy equation. The balance of the mechanical energy in the Bohai Sea is discussed with the mechanical energy equation. By using the above Fourier series, a method to calculate...

The bottom friction plays an important role in the interaction between tidal constituents. To study the interaction of the constituents through the friction, the quadratic bottom friction term is expanded into a Fourier series form. Many useful results are obtained.Starting from the nonlinear momentum equations, we obtain the mechanical energy equation. The balance of the mechanical energy in the Bohai Sea is discussed with the mechanical energy equation. By using the above Fourier series, a method to calculate the average drag coefficient CD in a certain area is deduced from the mechanical energy equation. This method is applied to the Bohai Sea and an estimate of CD=0.0013 is obtained.

在潮波动力学中,底摩擦在潮波之间的相互作用中起着很大的作用。本文将与速度平方成正比的底摩擦项展成一个Fourier级数,并讨论了底摩擦引起的潮波之间的相互干扰。 由非线性动量方程,我们得到机械能方程。利用以上的 Fourier级数,本文由机械能方程给出一种求解某一区域上平均拖曳系数C_D的方法。将此方法应用于渤海,求得该海区的拖曳系数C_D=0.0013。

It is analysed in this paper that the relations among the difference schemes, bottom friction forms and the numerical stability for unsteady water flow eqs. The authbr showed some important results as follows: (a) the numerical stability of a difference scheme can not always be improved by introducing a bottom friction item into it; (b) the bottom friction forms for a nonsymmetric numerical scheme must be different from that for a symmetrical one; (c) the stability criteria of the upwind schemes and the flux...

It is analysed in this paper that the relations among the difference schemes, bottom friction forms and the numerical stability for unsteady water flow eqs. The authbr showed some important results as follows: (a) the numerical stability of a difference scheme can not always be improved by introducing a bottom friction item into it; (b) the bottom friction forms for a nonsymmetric numerical scheme must be different from that for a symmetrical one; (c) the stability criteria of the upwind schemes and the flux splitting schemes for 1-d unsteady water flow eqs.

本文分析了一维非恒定流方程的差分格式、底摩擦项形式和数值稳定性之间的各种关系,论证了:(a)在格式中加入底摩擦项并不一定提高稳定性;(b)非对称型格式和中心差分格式应采用不同形式的底摩擦项;(c)一维非恒定流方程的一阶迎风格式和矢通量分裂格式的线性稳定性条件。

Owing to failing to take the friction on the side wall into account, Barnwell's correction rule for sidewall interference in two-dimensional wind tunnel is, in therotician view, imperfect. To improve this, a corresponding modification on the Barnwell's rule has been made in this study; in which the sidewall boundary layer is reconsidered by means of the Karman-Pohlhausen method; the wall friction is represented in terms of the velocity gradient and therefore, the troubles faced in the correction with the friction...

Owing to failing to take the friction on the side wall into account, Barnwell's correction rule for sidewall interference in two-dimensional wind tunnel is, in therotician view, imperfect. To improve this, a corresponding modification on the Barnwell's rule has been made in this study; in which the sidewall boundary layer is reconsidered by means of the Karman-Pohlhausen method; the wall friction is represented in terms of the velocity gradient and therefore, the troubles faced in the correction with the friction are overcome. Based on this, a noval correction rule is formulated. The influence of the friction is reflected by the Pohlhausen parameter A of the boundary layer. The less the absolute value of A is, the greater the influence of the friction is. In addition, choice of the relevant parameter, such as δ , in the correction and turbulent case are briefly discussed.

Barnwell二维风洞侧壁干扰修正准则未计及壁面摩擦影响,理论上是不完善的。本文对此作了改进。用Karman-Pohlhausen方法对侧壁边界层进行了处理;将壁面摩擦项用速度梯度适当表示出来,从而克服了因考虑摩擦项带来的困难。建立了修正准则的新形式。在改进的准则中摩擦影响是通过Pohlhausen型边界层参数Λ表示的,Λ绝对值越小摩擦影响越大。此外,文中对修正中有关参数,如δ~*的选取以及湍流情况作了简单讨论。

 
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