查询词典 outer boundary

The problem of how the coherent structures in the wall region of a turbulent boundary layer could be excited by the disturbances from the outer region was investigated by using direct numerical simulation method.

应用直接数值模拟的方法，研究了湍流边界层近壁区由于外区扰动的作用而导致相干结构产生的问题·结果表明：在湍流边界层近壁区的上边界存在的速度扰动，可以在近壁区内激发出相干结构，从而完善了单个相干结构的理论模型

The method of multiple scales was used to solve the Duffing equation, the solutions were used to analyze qualitatively the effect of boundary conditions, ratio of damp, external excitation, and ratio of inner radius to outer radius on the second-harmonic resonance of an annular thin plate.

用多尺度方法求此振动控制方程的3次超谐共振解和1/3亚谐共振解，并且定性地探讨边界条件、内外半径比、激振力和阻尼对环形薄圆板在这两种次谐共振下的动态响应。

Firstly, according to electromagnetic field theory, the 2-dimensional (2-D) mathematical model of a three phase squirrel-cage Y802-2 induction motor is developed. Then general equations can be deduced from finite element discrete and functional analysis. The motor's 2D solving region of electromagnetic field is given based on the boundary conditions and assumption conditions of the squirrel-cage induction motor. Through finite element mothod and inner–outer convergence method, magnetic field distributions and magnetic forces of bars can be calculated in following rotor conditions: health rotor, one single broken bar, two adjacent broken bars, two broken bars with one good interval, two broken bars with two good interval and four adjacent broken bars.

本文首先根据电磁场理论建立Y802-2型三相笼型感应电动机二维电磁场的数学模型，并对其进行了有限元离散以及泛函分析，推导出总体方程；在基本假设和边界条件基础上，给出笼型感应电动机二维电磁场的求解区域，然后应用有限元并结合内外双收敛方法，对样机稳态运行进行数值计算，得出电机在转子完好、一根导条断裂、连续两根导条断裂、间隔一根两根导条断裂、间隔两根两根导条断裂及连续四根导条断裂六种情况下的磁场分布和导条所受电磁力的变化情况。

This model considers the flow of energy between two regions around the black hole : an inner region that is close to the so--called event horizen (the boundary beyond which even light cannot escape ), and an outer region that includes the black hole's fuel source-- the young stars--extending up to a million times father out .

此模型分析围绕在黑洞周边的两个区域间的能量流：内部的区域接近于视界（一个理论上的边界，超过此边界甚至光都无法逃脱黑洞的吞噬），外部区域包括黑洞的燃料源——年青的恒星——并继续扩展数百万倍。

The finding would also suggest that IBEX is detecting the particles from both inside and outside the heliopause, which is the boundary region between the outer solar system and the local interstellar medium.

这一发现还表明，苗正在检测来自内部和外部的驻点，这是与太阳系外的星际介质边界地区的粒子。

The electric displacement in media are, so the charge on the inner, outer, and boundary shells are,, and, respectively.

介质-1里电位移，因此在各面上的电荷为，，。

The phenomena occurring in the inner and outer regions of the turbulent boundary layer in conjunction with the most widely used event-detection techniques are considered, with reference to the large amount of mainly experimental results existing on the subject.

基于大量主要是由实验所得的结果，本文通过广泛运用的事件检测技术，探讨湍流边界层内部和外部区域发生的现象。

The urban fringe belt is defined by its outer and inner boundary, which separate the inner urban core, urban fringe and rural area.

城市边缘区被定义为城市内边界和外边界之间的环状区域，内边界分离城市核心区与城市边缘区，外边界分离城市边缘区与农村腹地。

And it is noted that the velocity field in a hydrocyclone is divided to two areas, i.e. the outer para-free-vortex and the inner para-forced vortex. The boundary surface of the velocity field is the maximum tangent velocity track surface, which is a cylinder when the hydrocyclones structure is reasonable.

分析研究结果表明，旋流器的切向速度场由外部准自由涡和内部准强制涡两个区域构成，其分界面为最大切向速度vtmax的轨迹面，结构设计合理时，此轨迹面为一圆柱面。

Influencing factors on thermometry such as the structure of the sensor inner and outer layers,thermal properties and boundary conditions are discussed.

基于此模型对传感器内外层结构、物性参数和边界条件等影响传感器温度测量的各个因素进行分析。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。