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tunnel testing
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  风洞
     Design Charaterisdcs and Wind Tunnel Testing of FT-2.5 Water-Pumping Wind-mill
     FT-2.5型风力提水机组的设计特点和风洞试验
短句来源
     CARDC ROTARY BALANCE WIND TUNNEL TESTING SYSTEM
     CARDC旋转天平风洞试验系统
短句来源
     This paper gives a brief description of the water-pumping wind-mill FT-2.5 involving considerations in its design and wind tunnel testing.
     本文概述了FT—2.5风力提水机组的设计特点和风洞试验结果。
短句来源
     With the DJS-131-1 minicomputer as the central processing unit,the data system is for a long time used for wind tunnel testing and the result of its operation shows that its performances haye reached the norms expected.
     这系统配置DJS—131—1型计算机在风洞试验中,经过相当长时间的运行,表明系统的各项性能均达到预期的指标。
短句来源
     Research of Wind Tunnel Testing Technique for Model of Van Body Truck
     厢式载货汽车模型风洞试验技术的研究
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  “tunnel testing”译为未确定词的双语例句
     Wind Tunnel Testing Loss Analysis of an Air Cooled 300MW Set's Exhaust Hood
     空冷300MW低压排汽缸吹风试验损失分析
短句来源
     The article introduces the definition and content of MOBILE6.2 model,analyzes its sensitivity,and sets simplified model of vehicle discharging factor combined with the existing condition of vehicle pollution control in our northern cities,and proves that the result of this model is similar to that of highway tunnel testing method.
     介绍了MOBILE6.2模型的概念及内容,并对其进行了敏感性分析,结合我国北方城市机动车污染控制现状,确定了机动车排放因子的简化模型,经验证该模型计算结果与公路隧道测试法得出结果相近。
短句来源
     THE ERROR ANALYSIS FOR WIND TUNNEL TESTING DATA
     风洞实验数据误差分析
短句来源
     THE ERROR OF WIND TUNNEL TESTING DATA AND ITS CALCULATING METHODS
     风洞实验数据的误差及其计算方法
短句来源
     It is indicated that the simultaneous simulations in lateral jet wind tunnel testing can be realized, in principle, as long as the corresponding compatibility conditions are satisfied.
     只要满足相容条件 ,在侧向喷流的直接模拟中原则上可实现喷流形状和喷流力的同时模拟
短句来源
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  相似匹配句对
     TESTING
     试验
短句来源
     Research and Practice on Testing Tunnel Protocol
     隧道协议的测试研究和实践
短句来源
     Technique of Testing and Monitoring in Highway Tunnel Construction
     公路隧道施工中的测试与监控技术
短句来源
     testing errors.
     心理测验的误差问题。
短句来源
     Tunnel Vision
     隧道进行曲
短句来源
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  tunnel testing
Due to observations made during standard wind tunnel testing, the structural response of a typical membrane MAV wing in steady level pre-stall flight is thought to be quasi-static.
      
Corner wall and tunnel testing of foamed thermosetting plastics has suggested that the E-84 anomaly can be resolved by the use of a rate index in the range of 0 to 77.5, where a distance criterion currently prevails.
      
Wind-tunnel testing, along with visualisation of the dynamics of the boundary layer and the trailing vortex of a ball in flight, demonstrated that both non-spinning and spinning (curved) balls had lowCd values in the super-critical region.
      
Sectional versus full model wind tunnel testing of bridge road decks
      
Aeroelastic wind tunnel testing of the laminate was performed and the result showed that flutter, a dynamic instability occurred.
      
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The pressure distribution of noncavitating potcnial flow around gate piers shown in Fig. la has been analysed. The analysis has its practical significance in that the minimum-pressure coefficient is closely related to the incipient cavitation number. After the W plane was mapped on to, the t plane with known transformations except an unknown parameter m, the complex velocity was expressed by Eq. (10) in terms of an unknown function Ω (t). Eqs. (13) and (16) indicate that along the boundary f and g are respectively...

The pressure distribution of noncavitating potcnial flow around gate piers shown in Fig. la has been analysed. The analysis has its practical significance in that the minimum-pressure coefficient is closely related to the incipient cavitation number. After the W plane was mapped on to, the t plane with known transformations except an unknown parameter m, the complex velocity was expressed by Eq. (10) in terms of an unknown function Ω (t). Eqs. (13) and (16) indicate that along the boundary f and g are respectively related, to the magnitude of the boundary velocity and the boundary geometry. Three equations to solve for the three unknowns are furnished by the conditions along the boundary: (1) The angle τ is given as a function of z. (2) f and g, being the real and imaginary parts of an analytic function, are related to each other. (3) The points of tangency are transformed to points on the real axis of the t plane. For the case in which the nose curve is composed of circular arcs, Eqs. (22), (28) and (29) were derived. The functions f and g were found numerically by iteration, and m was computed from Eq. (28). The distribution of velocity and that of pressure along the line of symmetry and the boundary were computed and plotted in Fig. 5, in which the pressure distribution from wind tunnel tests was also included. Preliminary results on incipient cavitation number were plotted in Fig. 6, to be compared with the theoretical |C_(pm)| curve. More tests are being done to study the scale effects.

本文分析了具有平行边墙的、头部由圆弧组成的二元半无限闸墩的绕流问题.根据沿边墙的流速和压力分布可以求出最小压力系数,再进一步估计初生空穴数.最后用气流试验的压力分布资料和水流试验的初生空穴数资料和分析结果进行了比较.

The present investigation is concerned with the determination of pressure distribution along curved boundaries formed by circular arcs often found in hydraulic structures. The boundary geometry considered are: (1) Semi-infinite pier in closed conduit with head part formed by two circular arcs, (2) Isolated circular-arc irregularity on the wall of closed conduit. Analytical results. found by means of conformal transformation were compared with experimental data from wind tunnel and water tunnel tests,...

The present investigation is concerned with the determination of pressure distribution along curved boundaries formed by circular arcs often found in hydraulic structures. The boundary geometry considered are: (1) Semi-infinite pier in closed conduit with head part formed by two circular arcs, (2) Isolated circular-arc irregularity on the wall of closed conduit. Analytical results. found by means of conformal transformation were compared with experimental data from wind tunnel and water tunnel tests, and with those obtained in previous investigations. Data on incipient cavitation number found from water tunnel tests and from published papers were compared with some of the calculated—C_(pmin). Agreement is good.

本文分析和計算了管道中沿三种圓弧形边界的压力分布,并給出了最小压力系数:(1)由二对称圓弧組成的閘墩头部;(2)边墙的半弓形突体;(3)边墙的弓形突体.根据最小压力系数和有关空穴发生的縮尺影响方面的研究,即可估計原型的初生空穴数.为了防止水流发生塞穴,設計的过水空穴数不得小于此值.

This article describes dynamic stress measurement of x-type of helicopter tail rotor tunnel test in several principal aspects. According to the test requirements emphases are laid on reasonably selecting specimen, measured poi its and method of instrumentation from the view point of dynamic response. A noticeable problem, the influence of support conditions in dynamic stress measureme it of tunnel test is presented.

本文介绍x型直升飞机尾桨吹风试验动应力测量工作的几个主要方面。根据试验要求着重从振动的响应观点合理选择试件、测量点与测试方法。提出了吹风试验动应力测量中的一个值得注意的问题——支承条件的影响。

 
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