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辐射问题
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  “辐射问题”译为未确定词的双语例句
    Time-domain second-order wave radiation around two-dimensional body
    二维水波辐射问题的二阶时域解
短句来源
    Understanding Earthquake Source Radiation
    论震源辐射问题(英文)
短句来源
    The free-surface boundary condition and the they boundary condition are satisfied to second-order at each time step, renection waves are absorbed with edificial damping zone. The FEM with time marching is used to solve this problem. Oscillating of a horizonal semi-submerged circular cylinder is selected to confirm the validity of the calculation method.
    用二阶理论在时域范围内研究二维二阶非线性水波的辐射问题,一阶、二阶问题分别满足各自的自由表面条件和物面条件,采用人工阻尼来吸收反射波.计算采用有限元法,对水平半圆柱体在水面的振荡问题进行了计算,计算了波高时间历程和水动力,计算结果与有关文献中的数据相比符合较好.
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  radiation problem
The apparent mass and damping coefficients of the radiation problem and the reflection coefficient of the problem of scattering of an impinging wave by a floating body are calculated.
      
This paper inquires into the feasibility of the solution to the wave diffraction and radiation problem in the case of critical loading.
      
It is shown that the diffraction problem always has a solution while the radiation problem may have no solution.
      
Inverse radiation problem of boundary incident radiation heat flux in semitransparent planar slab with semitransparent boundarie
      
Inverse radiation problem in one-dimensional semitransparent plane-parallel media
      
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  radiation problem
The apparent mass and damping coefficients of the radiation problem and the reflection coefficient of the problem of scattering of an impinging wave by a floating body are calculated.
      
This paper inquires into the feasibility of the solution to the wave diffraction and radiation problem in the case of critical loading.
      
It is shown that the diffraction problem always has a solution while the radiation problem may have no solution.
      
Inverse radiation problem of boundary incident radiation heat flux in semitransparent planar slab with semitransparent boundarie
      
Inverse radiation problem in one-dimensional semitransparent plane-parallel media
      
更多          


In thes paper, the radiation of the cosmic magnetic monopoles which move in a elliptic orbit in cosmic space are studied. A formula of the radiant spectrum power is de rived. The formula could be used to detect and distinguish the existence of cosmic magne tic monopole.

本文研究了磁单极子在宇宙空间作椭圆轨道运动的辐射问题,得到了这种辐射的谱功率公式.该公式对探测和鉴别宇宙磁单极子具有重要意义.

A time-domain secodorder method is employed to study nonliear wave radiation around two-dimen-sional body. The free-surface boundary condition and the they boundary condition are satisfied to second-order at each time step, renection waves are absorbed with edificial damping zone. The FEM with time marching is used to solve this problem. Oscillating of a horizonal semi-submerged circular cylinder is selected to confirm the validity of the calculation method. The time histories of wave elevations and hydredynamics...

A time-domain secodorder method is employed to study nonliear wave radiation around two-dimen-sional body. The free-surface boundary condition and the they boundary condition are satisfied to second-order at each time step, renection waves are absorbed with edificial damping zone. The FEM with time marching is used to solve this problem. Oscillating of a horizonal semi-submerged circular cylinder is selected to confirm the validity of the calculation method. The time histories of wave elevations and hydredynamics on the cylinder are calculated.Some results are compared with those obtained by previous theory and experiment, and a satisfactory agreement is obtained.

用二阶理论在时域范围内研究二维二阶非线性水波的辐射问题,一阶、二阶问题分别满足各自的自由表面条件和物面条件,采用人工阻尼来吸收反射波.计算采用有限元法,对水平半圆柱体在水面的振荡问题进行了计算,计算了波高时间历程和水动力,计算结果与有关文献中的数据相比符合较好.

A three-dimensional time-domain approach is used to study the wave loads and body motion.In this approach,the exact body boundary condition is satisfied on the wetted body surface while the free-surface boundary conditions are linearized.An integral equation with a transient free-surface Green function is derived,in which the integration on the free surface and the free term coefficient are removed.Numerical results of diffraction and radiation for the hemi-sphere,sphere,cylinder,box and taper are presented.The...

A three-dimensional time-domain approach is used to study the wave loads and body motion.In this approach,the exact body boundary condition is satisfied on the wetted body surface while the free-surface boundary conditions are linearized.An integral equation with a transient free-surface Green function is derived,in which the integration on the free surface and the free term coefficient are removed.Numerical results of diffraction and radiation for the hemi-sphere,sphere,cylinder,box and taper are presented.The agreement between the present computation and the results from the frequency domain analysis is good.

该文采用时域内满足自由水面条件的格林函数方法对无限和有限水深中波浪与任意形状三维物体相互作用所产生的绕射和辐射问题进行了理论研究和数值计算。建立了不包含自由水面积分的积分方程,消除了自由项系数。文中计算了各种形状三维物体在无限水深和有限水深情况下所受到的绕射和辐射波浪力,并与解析解以及频域理论进行了对比,结果符合良好,验证了本文所提理论的正确性。

 
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