The results of case study show that the model is available for air quality predicting in shore line. Key Words Sea and land breeze; Vertical shear of wind…
实例应用表明,该模式对海陆风上下层风向存在切变时的空气质量模拟是有效的。
Wind shear near the surface, for design purpose, is a shear which ACTS on a space vehicle free-standing on the pad or at the time of lift-off.
从设计目的看,靠近地面的风切变是作用于自由竖立发射台上的飞行器或者发射时的飞行器上的风切变。
The occurrence of squall lines is frequently associated with instability energy and vertical wind shear.
飑线的产生经常与不稳定能量和垂直风切变相联系。
A typical low-level wind shear of thunderstorm activates long periodic oscillation of an aircraft, causing tracking deviation of the aircraft.
典型尺度的雷暴低空风切变以长周期振动频率激励飞机,使其偏离预计下滑航迹。
Based on the tendency equation of turbulent kinetic energy, its simplified equation including only wind shear and air stability was derived.
基于湍流动能倾向方程,推导出了其只含风切变和大气稳定度的简化方程。
No criteria is defined for relating wind shear values to the occurrence of light, moderate, or severe.
更没有把风切变值和轻度颠簸、中度颠簸、强颠簸相关联的准则。
The continuous spectrums occur to overlap with the increase of wind shear.
随着风切变的增大,连续谱发生重叠。
There exists the wind shear in the vertical distribution of the average wind speed in the convective boundary layer.
在对流边界层中平均风速垂直分布存在风切变现象。
In addition to vertical shear force, slab-column connections also have to transfer unbalanced moment due to combined vertical and lateral forces as a result of wind effect or earthquake excitations.
在风荷载或地震荷载等水平荷载及竖向荷载共同作用下,板柱节点除了要传递垂直剪力外,还必须传递较大的不平衡弯矩。
The power expression by the wind passing through the rotor swept area of back wind direction wind turbine is accurately deduced from energy viewpoint based on wind shear and tower shadow effect.
从风力机获取能量角度出发,充分考虑风剪切与塔影效应,精确推导出作用于下风向风力机风轮扫掠面积上理论风功率的计算式。
The product of vertical wind profile(VWP) which based on VAD methods are introduced detailedly. This product is useful to ascertain the type of thermal advection, the shear of vertical wind, etc.
详细介绍了基于VAD技术的垂直风廓线产品(VWP)的应用技术,此产品对确定热力平流类型、垂直风切变等都是有用的。
The dry PV field in the lower troposphere shows that the coupling of the dense PV isoline zone and the wind shear was formed in the storm area.
对流层低层干位涡场特征表现为,风暴区形成干位涡等值线密集区和风场切变的耦合。
Analysis of surface stream and energy fields obviously showed that the squall line occurred behind the surface shear line, and before the convergence area of wind.
地面流场和能量场的分析明显反映出了飑线在地面切变线后部,风向、风速辐合区前部。
On the assumption that the wind shear is sinusoidal, the effects of long periodic oscillation on the landing path of an aircraft were studied by computer calculation and with flight simulator.
在正弦风切变假定下,利用计算机计算和飞行模拟器模拟研究了长周期振动频率上下的正弦波风切变对飞机着陆航迹的影响。
By using the compressible hydrodynamic equations, a spectral equation describing propagation of AGW's in a region of vertical wind shear is derived.
根据可压缩情况下的流体力学方程组,导出垂直切变风场中大气声重波的谱方程。
An approach process is simulated in wind shear condition. The results show that the models presented are reasonable and can to a great extent illustrate the handling behavior of pilot.
对风切变大气环境下飞机进场下滑过程进行了仿真计算,结果表明,所建立的模型是合理的,能在一定程度上反映驾驶员的操纵情况。
The baroclinity formed by the horizontal temperature gradient is the main reason for the formation of the wind shear.
水平温度梯度形成较强的斜压性是形成边界层风切变的主要原因。
The real-time wind data from local terminal Doppler radar and auto weather observation stations were calculated to obtain the degree of wind shear and turbulence.
利用机场实时的多普勒气象雷达和地面自动观测资料定量计算出风切变的大小,从而确定风切变和飞机颠簸的强度等级。
The special structure of wind area such as continuous vertical wind direction shear and the strong convergence create the useful situation of the snowstorm.
持续的垂直风向切变及强辐合等风场结构为暴雪产生创造了条件;
In this paper, on the basis of the basic principles and practical engineering, the Doppler lidar system for microscale wind shear-field detection is studied.
本文从基本原理和工程实际出发,对用于微尺度风切变场探测的多普勒激光雷达系统进行了初步研究。
Finally, the wind shear-field retrieval method is introduced and the overall performance of the designed system is analyzed by using the designed parameters of each unit.
给出了风切变场反演方法,并根据各个单元设计的具体参数对系统的总体探测性能进行了分析。
In this paper, the variation of spectral structure of acoustic gravity waves (AGW's) propagating through a region of vertical wind shear is investigated.
本文研究声重波在垂直切变风场中传播时谱结构的改变。
Under the shear wind aloft conditions in the winter season, the fairing of the launch vehicle suffered local structural damage.
在冬季高空切变风条件下,运载火箭整流罩局部结构破坏。
To improve the accuracy of convection weather forecast, one of the key issues is to find out the atmospheric vertical stability and wind shear.
提高对流天气临近预报准确率的关键问题之一是了解大气的垂直稳定度和垂直风切变。
The results show that, when the wind shear of basic flow is not zero, there exists continuous spectrum of gravitational inertial wave and vortex wave.
结果发现:当基流存在切变时,无论是重力惯性波还是涡旋波都存在连续谱。
The results show that, when the wind shear of basic flow is not zero, there exists continuous spectrum of gravitational inertial wave and vortex wave.
结果发现:当基流存在切变时,无论是重力惯性波还是涡旋波都存在连续谱。
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