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边界反射系数
相关语句
  boundary reflection coefficient
     An Identification Problem of the Boundary Reflection Coefficient for Nuclear Reactor in a Slab Geometry
     平板核堆边界反射系数的一个辩识问题
短句来源
  “边界反射系数”译为未确定词的双语例句
     Refiection coefficients of the boundary in the frequency domain are formulated for twocases, in which the total wave fields are composed of the incident wave only and the incidentwave plus the fully developed refiecti on wave,respectively.
     对全波场仅由入射波构成及由入射波和充分发育的反射波构成两种情况导出了边界反射系数的频域公式。
短句来源
     The reflection coefficients arethen analyzed from a viewpoint of accuracv of the boundary in the time domain to illumi-nateadvantages of the generalized boundary over the previous one in reducing reflections ofthe traveling waves at large incident angles and the incident evanescent motion.
     从时域计算精度角度分析了边界反射系数以阐明在透射大角度入射行进波动和消减运动方面推广边界的优点。
短句来源
     A reasonable spurious parameter of artificial boundary is also proposed, which lays down the base for FEM numerical simulation.
     提出了合理的人工边界反射系数公式,为有限元模型提供了理论基础。
短句来源
  相似匹配句对
     STUDY ON REALISTIC REELECTION COEFFICIENT OF TRANMITTING BOUNDARY
     透射边界真实反射系数的研究
短句来源
     Boundary thinking
     边界沉思
短句来源
     reflective and refractive coefficient of line boundary spectrum analysis;
     第二部分是线路边界反射系数的频谱分析 ;
短句来源
     BORDER DISEASE: A REVIEW
     边界
短句来源
     An Estimator of Reflection Coefficients
     反射系数的估计
短句来源
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  boundary reflection coefficient
The peculiarity of this method is that the boundary effects on the sound field can be expressed by the equivalent boundary reflection coefficient, so BDRM theory can be extended to elastic bottom easily.
      
An improved method for computing the upper boundary reflection coefficient in the BDRM is proposed and applied to calculate the acoustic fields of a two-axis underwater channel.
      
But air-exposed dc film resistances, when compared to in-situdc resistances, show that the grain boundary reflection coefficient, Rgin Mayadas-Shatzkes model changes from 0·2 to 0·6.
      


The reflection coefficients of the discrete local transmitting bound ary(DLTB)and the superposition boundary(SB)in modeling anti-plane and in-plane wavemotions are studied.The effects of both space and time discretizations on wave motion andthe infiuence of the reflected wave on the coefficients are considered.One-dimensional finiteelement discrete model is adopted in discussing the variation of reflection coefficient withthe order of the corresponding boundary.It is shown that the DLTB is more accurate thanthe...

The reflection coefficients of the discrete local transmitting bound ary(DLTB)and the superposition boundary(SB)in modeling anti-plane and in-plane wavemotions are studied.The effects of both space and time discretizations on wave motion andthe infiuence of the reflected wave on the coefficients are considered.One-dimensional finiteelement discrete model is adopted in discussing the variation of reflection coefficient withthe order of the corresponding boundary.It is shown that the DLTB is more accurate thanthe SB in finite element simulation of wave motion,especially when higher order boundaries are used.

本文研究了出平面和平面内波动在局部透射边界和叠加边界的反射系数,在研究中考虑了时空离散化的影响及反射波本身对反射系数的影响.采用一维有限元离散模型讨论了两种边界的阶数对反射系数的影响.通过比较这两种边界的反射系数得出以下结论:局部透射边界在有限元波动模拟中的精度高于叠加边界,且其优越性随着边界阶数的增加而提高。

In this paper,an identification problem of the boundary reflection coefficient for nuclear reactor is considered in a slab. A sufficient and necessary condition concerning the existence of the optimal identification is obtained under the assumptions of anisotropic scattering and fission in a nonhomogeneous medium with one side of the slab being surrounded by a perfect absorber,and the necessary conditions associated with the optimal identification are given.

本文就平板模型讨论核反应堆边界反射系数的辨识问题,在一边被墨体包围,介质非均匀,散射和裂变各向同性的情形下,我们给出了边界反射系数最佳辩识存在的充要条件,以及最佳辩识满足的必要条件。

The multi-transmitting boundary condition has been generalized using spaceextrapolation to improve accuracy of the boundary condition in the time domain computa-tion. Refiection coefficients of the boundary in the frequency domain are formulated for twocases, in which the total wave fields are composed of the incident wave only and the incidentwave plus the fully developed refiecti on wave,respectively. The reflection coefficients arethen analyzed from a viewpoint of accuracv of the boundary in the time domain...

The multi-transmitting boundary condition has been generalized using spaceextrapolation to improve accuracy of the boundary condition in the time domain computa-tion. Refiection coefficients of the boundary in the frequency domain are formulated for twocases, in which the total wave fields are composed of the incident wave only and the incidentwave plus the fully developed refiecti on wave,respectively. The reflection coefficients arethen analyzed from a viewpoint of accuracv of the boundary in the time domain to illumi-nateadvantages of the generalized boundary over the previous one in reducing reflections ofthe traveling waves at large incident angles and the incident evanescent motion.

利用空间外推将多次透射边界条件推广以提高这一边界在时域计算中的精度。对全波场仅由入射波构成及由入射波和充分发育的反射波构成两种情况导出了边界反射系数的频域公式。从时域计算精度角度分析了边界反射系数以阐明在透射大角度入射行进波动和消减运动方面推广边界的优点。

 
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