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streamline contour
相关语句
  相似匹配句对
     The contour of existence
     存在的轮廓
短句来源
     The contour is satisfaction.
     形成的指蹼有足够的张开度,外形满意。
短句来源
     Streamline Visualization: Research and Development
     流线可视化技术研究与进展
短句来源
     4 ) representation of streamline graphs;
     4.流线图的表示;
短句来源
     Electric potential contour and current streamline figures show that it is important to consider the effect of the low conductivity of skull on electric potential and current flow.
     给出了等位线图和流线图 ,表明低电导率对电位分布和电流流向的影响不可忽视 .
短句来源
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  streamline contour
3) The streamline contour map is very sensitive to mass flux change.
      
Instantaneous streamwise location of the free-stream vortex is identified by an arrowhead in streamline contour plots.
      
From another point of view, the variation of the Nusselt number can be explained from the streamline contour.
      


This paper deals with the significance of the,lightening of high-speed motorized unit and its streamlined contour with excellent aerodynamic performance. By the studies of the lightening of car-body steel structure of China's first high-speed prototype locomotive,this paper gives the design of car-body structure-forming the confining frames on the body's vertical/horizontal sides as many as possible in the light of the integral load-bearing principle,and harmonizing the stiffness of each component,thus...

This paper deals with the significance of the,lightening of high-speed motorized unit and its streamlined contour with excellent aerodynamic performance. By the studies of the lightening of car-body steel structure of China's first high-speed prototype locomotive,this paper gives the design of car-body structure-forming the confining frames on the body's vertical/horizontal sides as many as possible in the light of the integral load-bearing principle,and harmonizing the stiffness of each component,thus to make full use of those load-bearing functions of major components so that both sfiffness and strength can be generally improves. In addition,this paper successfully solves the problem concerning the designing of threedimensional torsion beam pieces of the streamlined contour steel structure of cab,and that of three-dimensional skin. All this will be of great practical significance to the further development of high-speed train.

本文阐述了高速列车动车轻型化及具有良好气动性能流线化外形的重要意义.通过对我国第一台高速动车样车车体钢结构轻型化的研究,提出了“按整体承载思路,在车体纵、横断面上形成尽可能多的封闭框架,并协调各构件的刚度,充分发挥车体各主要构件的承载作用,以提高结构的整体强度和刚度”的车体结构设计方案;并成功地解决为适应流线化外形司机室钢结构三维扭曲梁件及三维蒙皮的设计难题.这些,对今后高速列车的发展有重要实用价值.

A hybrid finite difference and vortex method, which is based on domain decomposition and proposed by the authors (1992), is used forcalculating the flow around a rotating circular cylinder at Reynoldsnumber Re=1 000 and the rotation velocity ratio a∈(0.5,3.25) respectively. Some improvments are made in solution process: ahigh order full implicit difference algorithm is adopted, and the Solvers is replaced by a very efficient modified incomplete LU decomposition conjugate gradient method (MILU-CG). The long-time...

A hybrid finite difference and vortex method, which is based on domain decomposition and proposed by the authors (1992), is used forcalculating the flow around a rotating circular cylinder at Reynoldsnumber Re=1 000 and the rotation velocity ratio a∈(0.5,3.25) respectively. Some improvments are made in solution process: ahigh order full implicit difference algorithm is adopted, and the Solvers is replaced by a very efficient modified incomplete LU decomposition conjugate gradient method (MILU-CG). The long-time fullydeveloped features about the variations of the vortex patterns in thewake , and drag, lift forces on the cylinder are given. The calculated streamline contour plots agreed well with the experimentalvisualized flow pictures. The existence of the critical state isnumerically shown for the first time, and the vortex patterns at corresponding states are given, too . The maximum lift to drag forceratio can be obtained near the critical state.

采用作者提出的基于区域分解、有限差分法与涡法杂交的数值方法,结合高阶隐式差分格式,和以修正的不完全LU分解为预处理器的共轭梯度法作求解器.系统地研究了雷诺数Re=1000,旋转速度比a∈(0.5,3.25)范围内,绕旋转圆柱从突然起动到充分发展,长时间内尾流旋涡结构和阻力、升力系数的变化规律.计算所得流动图案与实验流场显示符合很好.数值试验证实了临界状态的存在,并首次给出了临界状态时的旋涡结构特性,指出最佳升阻比也在该状态附近得到

 hybrid finite difference method and vortex method (HDV), which is based on domain decomposition and proposed by the authors (1992), is improved by using a modified incomplete LU decomposition conjugate gradient method (MILU-CG), and a high order implicit difference algorithm. The flow around a rotating circular cylinder at Reynolds number Re=1000,200 and the angular to recti-linear speed ratio α∈(05,325) is studied numerically. The long-time full developed features about the variations of the vortex...

 hybrid finite difference method and vortex method (HDV), which is based on domain decomposition and proposed by the authors (1992), is improved by using a modified incomplete LU decomposition conjugate gradient method (MILU-CG), and a high order implicit difference algorithm. The flow around a rotating circular cylinder at Reynolds number Re=1000,200 and the angular to recti-linear speed ratio α∈(05,325) is studied numerically. The long-time full developed features about the variations of the vortex patterns in the wake, and drag, lift forces on the cylinder are given. The calculated streamline contours agreed well with the experimental visualized flow pictures. The existence of critical states and the vortex patterns at the states are given for the first time. The maximum lift to drag force ratio can be obtained nearby the critical states.

本文采用以修正的不完全LU分解作预处理器的共轭梯度法(MILU_CG),结合高阶隐式差分格式,改进了作者(1992)提出的基于区域分解、有限差分法与涡法杂交的数值方法(HDV)·系统地研究了雷诺数Re=1000,200,旋转速度比α∈(05,325)范围内,绕旋转圆柱从突然起动到充分发展,长时间内尾流旋涡结构和阻力、升力系数的变化规律·计算所得流线与实验流场显示相比,完全吻合·首次揭示了临界状态时的旋涡结构特性,并指出最佳升阻比就在该状态附近得到

 
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