Orifice damping effect is the key point in study of fluctuating internal pressure and wind-induced dynamic responses of roof structures with opening in turbulence flow.
设计制作了具有不同开孔率的两个平屋面气动弹性模型,进行了突然开孔后屋面风振稳态响应的风洞试验,利用经验模式分解(EMD)、随机减量技术(RDT)以及希尔伯特变换(HT)成功地提取了开孔屋盖系统第一模态的阻尼比,并与理论结果进行了比较,最终得出在紊流风场中孔口阻尼以粘滞阻尼为主的结论。
A new method for identifing aerodynamic derivatives of bridge decks in turbulence flow is put forward in this paper.
提出一种在紊流风场中识别桥梁断面气动导数的新方法 。
It analyzes and researches structural wind project from three aspects including near-land liquid wind features,blunt air motive mechanics and structrual wind shaking control,meantime,analyzes the developing actuality of structural anti-wind research,prospects the developing outlook of anti-wind research and structural wind project,so as to offer guidance for further research.
从近地紊流风特性、钝体空气动力学、结构风振控制三方面对结构风工程进行了分析研究,同时对结构抗风研究的发展现状进行了分析,并对结构风工程与抗风研究的发展前景进行了展望,从而为其进一步的研究提供了理论指导。
A second method of measuring the turbulence in a wind tunnel makes use of a "pressure sphere."
测量风洞紊流度的第二个方法是使用“压力球。”
Numerical Simulation of Three-Dimensional Turbulent Flow Field in Spillway Tunnel;
双洞式溢洪洞三维紊流场的数值模拟
Turbulent Wind Action on Long Span Bridges with Separated Twin-girder Decks
紊流风对大跨度分体双箱梁桥梁的作用
This turbulence caused the flow pattern in the tunnel to be similar to the flow pattern in free air at a higher Reynolds number.
这种紊流使风洞内的流谱与在较高的雷诺数下自由气流中的流谱相似。
turbulent-flame velocity
紊流火焰的传播速度
Experimental Study of Turbulent Flow Width and the Characteristic of the Turbulence Around Round-ended Pier
圆端形桥墩周围水流紊动特性及紊流宽度研究
Two-Dimensional Turbulent-Flow Numerical Modeling in No-pressure Tunnel of High Water Reservoir;
高水头下水库无压泄水洞的二维紊流数值模拟
A Wind Tunnel Simulation on Mean Flow Variances over Transverse Dunes
横向沙丘气流平均速度变化规律的风洞模拟
Windbreak Effects and Wind Velocity Flow Field of Low Density Arbor with Two Spatial Distribution Patterns in Wind Tunnel
低覆盖度乔木两种分布格局内风速流场和防风效果风洞实验
Turbulence is defined as a series of irregular gusts.
紊流定义为一组无规则的突风。
A flow passage in a wind tunnel that decelerates a stream of gas or liquid from a high to a low velocity.
扩散道风洞中的气流变迁，将会调整度的气体或液体流降到低速
Experimental study of lateral turbulent flow width at round-ended pier
圆端形桥墩侧向紊流宽度的试验研究
Turbulent BL Structure: Wake, Wall layers. Inner, Outer Variables. Effects of Roughness.
紊流边界层结构：尾流，壁面层，内、变数。粗糙度效应。
The study of the test of the persion impact on the current turbulent strength of the bend of the river
分流对弯道水流紊动强度影响的试验研究
Visualization of the Airflow Patterns of 12 Typical Diffusers and Experimental Investigation on the Turbulent Coefficient;
12种典型送风口射流流型可视化及紊流系数试验研究
Confluence Characteristics of Tubular Flow and Incoming Flow from Circular Chink: Experimental Study on Isothermal Concentration Field and Turbulance Characteristics
管流与环缝入流的管内合流特性──等温浓度场与紊流特性实验研究
Effect of Turbulence of Pulp in Flotation Cell on Flotation of Oxidized Ore
浮选机槽内矿浆紊流强度对氧化矿浮选的影响
High flow velocity was found in some patients accompany stenosis of the siphon.
合并虹吸段狭窄时血流速度增高频谱紊乱。