查询词典 wind tunnel

This text studied the mutually interference influences to the aerodynamic force of irregular shape base on analysis using wind force and wind pressure data of super high buildings model obtained by wind tunnel tests, and provided reference to designer and expurgator on building code.

本文以超高层建筑刚性模型的高频天平测力风洞试验数据和表面测压风洞试验数据为依据，研究了复杂外形建筑的风力和高层建筑相互干扰对风力影响，供设计者及规范修订时参考。

Based on rigid model tests in wind tunnel and synchronous manometric method on internal and external facades,wind pressure and gust factor distribution on double-skin facades of rectangle building was analyzed emphatically,and comparison of wind load between internal and external facades in different airflow zones was discussed.

采用刚性模型风洞试验和内、外层幕墙同步测压技术对矩形建筑的风荷载和阵风系数的分布规律进行详细研究，探讨了内、外层幕墙在不同气流流动区域内的风荷载大小关系。

A wind tunnel for thunderstorm downburst was well designed by taking into account the low-speed uniflow wind tunnel design criteria, andan adjustable plate was made to simulate the ground.

鉴于雷暴冲击风试验装置的特殊性以及与低速直流风洞的共通性，参考低速直流风洞的设计方法设计完成了试验装置的洞体结构，并制作了具有调节功能的平板来模拟地面。

In order to study the influences of different wind speeds and wind yawed angles on the buffeting performance of bridge tower during construction,a wind tunnel test of bridge tower aeroelastic model was made based on considering the action of tower crane.

为了研究不同风速、风偏角在施工阶段对桥塔抖振性能的影响，进行了考虑塔吊共同作用的桥塔联合气弹模型风洞试验。

The results show that side force, lift and overturning moment obtained by simulation and by wind tunnel test are consistent. When train travels with certain speed, the aerodynamic force and overturning moment acting on passenger car running on bridge, embankment and flat will increase greatly as cross-wind becomes larger while those increase less when the train runs on cut. Under the condition of strong cross-wind, aerodynamic force and overturning moment acting on train traveling on bridge are the largest. So the train traveling on bridge tends to overturn compared with that traveling on other three kinds of railway conditions. Aerodynamic force and moment acting on train traveling on cut are the least.

研究结果表明：侧向力、升力和倾覆力矩数值模拟结果与风洞实验结果均吻合较好；车速一定时，随着侧风速度的增大，列车在桥梁、路堤、平地上运行所受气动力和倾覆力矩均急剧增加，而在路堑上运行所受气动力及力矩增加缓慢；当侧风速度一定的情况下，客车在高桥上运行所受到的气动力及力矩最大，因此，强侧风下列车在高桥上运行较容易发生倾覆事故；在路堑上所受到的气动力相对最小。

It was pointed that the study of downburst wind loads would provide the basis and guides for constructing the next wind tunnel emulating thunderstorm environment and downburst-resistant design of transmission tower-line systems; simultaneously it would give an important reference to both the design and implementation of wind-induced vibration control of transmission tower-line systems.

指出了对下击暴流风荷载的研究将为我国建造模拟雷暴风环境的新一代风洞实验室和输电塔线体系的抗下击暴流提供理论基础和设计指导，同时为输电塔线体系的风致振动控制设计与实现提供重要的参考。

The along-wind vibration and across-wind vibration , icing situations of Guyed Mast are also studied, furthermore, the parametric vibration, the phenomenon of jump and chaos of the Guyed Mast are investigated; also, the wind tunnel experiment of Guyed Mast first made in China is finished and the test result, along with measurement of the real structure, are examined, which provide the reasonable theory and reliable experimental data for the revision of the high-rise structure code.

本文系统地研究了桅杆的顺风、横风以及在裹冰下的风效应，并进一步分析了桅杆的参激振动、跳跃及混沌现象等，完成了国内首次桅杆结构的风洞试验，分析了桅杆实测和试验结果，为今后高耸结构规范的修订提供了的合理的理论依据和可靠试验数据。

Wind tunnel experiments were conducted to test anti-wind erosion capacity of different crop stubbles in Horqin Sandy Land. The main influential factors of wind erosion were analyzed in the field condition.

利用野外风洞设备，以翻耕地为对照，对科尔沁沙地东部农田的4种不同作物茬地抗风蚀效果进行了测试，对风蚀主要影响因子进行了分析。

In this paper, wind profile modeling in the new boundary layer wind tunnel of Wind Engineering Research Center, Tokyo Polytechnics University, Japan, is introduced briefly.

首先简单介绍了日本东京工艺大学风工程研究中心新建的开环流低速边界层风洞中风剖面模拟的试验情况。

In this paper, the wind tunnel test of large span roof structures' dynamic wind loads have been discussed systematically, the modal decomposition method and time domain method, which was combined with the result to calculate the wind-induced vibration responses and equivalent static wind loads of (non-large-deformation) large span roof structures are also studied at the same time, and some engineering-valuable conclusions are summarized.

本文正是在这种背景下，依托武汉体育中心游泳馆屋盖的风洞试验研究，对现有的大跨屋盖结构的风荷载及风致响应计算方法做了一定的改进，在风致响应理论在实际工程中的应用上得到了一些有工程价值的结论。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。