The new low speed wind tunnel of the TU Braunschweig

20th International Congress on Instrumentation in Aerospace Simulation Facilities, 2003. ICIASF '03. Pub Date : 2003-08-25 DOI:10.1109/ICIASF.2003.1274892

T.J. Moller, J. Ortmanns, M. El Khalfaoui, R. Radespiel

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引用次数: 8

Abstract

The low speed model wind tunnel (MUB) has been transferred from the DNW-NWB to the Institute of Fluid mechanics of the TU Braunschweig (ISM). The wind tunnel is a closed return atmospheric wind tunnel with three different test sections. Two of them are closed and one is an open test section. The wind tunnel has been improved by a new closed test section with a cross section of 1.3/spl times/1.3 m. A maximum speed of 60 m/s is achieved with this test section. The second closed test section has a cross section of 0.8/spl times/0.8 m which allows velocities up to 140 m/s. Another option is an open test section with a jet that measures 1.3 m. The maximum Reynolds-Number is 7.5*10/sup 5/. The major improvement is the addition of a heat exchanger, which allows to keep the temperature of the flow constant. As a research facility the tunnel incorporates extensive flow measurement instrumentation including probe traversing and particle image velocimetry (PIV) systems. The new test section allows optimal and flexible optical access as well as the usage of conventional measurement technique.

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布伦瑞克工业大学新建的低速风洞

低速模型风洞(MUB)已从DNW-NWB转移到布伦瑞克工业大学流体力学研究所(ISM)。风洞是一个封闭的返回大气风洞，有三个不同的试验段。其中两个是封闭的，一个是开放的试验段。对风洞进行了改进，新建了一个截面为1.3/spl倍/1.3 m的封闭试验段。该测试段的最大速度可达60米/秒。第二个封闭测试段的横截面为0.8/spl乘以0.8 m，其速度可达140 m/s。另一种选择是一个带有1.3米射流的开放式测试段。最大雷诺数为7.5*10/sup 5/。主要的改进是增加了一个热交换器，它可以保持流动的温度恒定。作为研究设施，该隧道采用了广泛的流量测量仪器，包括探针穿越和粒子图像测速(PIV)系统。新的测试部分允许最佳和灵活的光学访问以及传统测量技术的使用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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20th International Congress on Instrumentation in Aerospace Simulation Facilities, 2003. ICIASF '03.

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