Small-Scale Open-Circuit Wind Tunnel : Design Criteria , Construction and Calibration
Small-Scale Open-Circuit Wind Tunnel : Design Criteria , Construction and Calibration
复制标题
小型开路风洞：设计标准、施工和校准
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
S. Mauro
中科院分区：
文献类型：
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作者：
S. Mauro
本文论述了小型开环风洞的设计和试验研究。为了验证所提出的设计准则，一个开路的小规模风洞建成和测试。所设计的风洞由沉降室、收缩段、试验段、扩压器和风机组成。试验室具有5 × 5 cm的方形横截面，设计流速约为6 m/s。采用粒子图像测速仪（Particle Image Velocimetry，PIV）测量流场和流动的主要特性。确定了不同试验室横截面处的湍流强度。在试验段入口处测得的湍流度约为0.4%。沿试验段沿着记录到湍流强度的小幅增加。所获得的结果对于这种规模的风洞是可以接受的。因此，该风洞可用于例如测试翼型周围的流场。在NACA 0012翼型上进行了初步试验。结果证明与空气动力学理论以及科学文献是一致的。因此，风洞结果可用于校准和验证计算流体动力学数学模型。
The present paper deals with a study of very small-scale openloop wind tunnel design and test. To verify the proposed design criteria, an open-circuit small-scale wind tunnel was built and tested. The designed wind tunnel is composed by a settling chamber, a contraction section, a test section, a diffuser as well as a fan. The test chamber has a squared cross section of 5 x 5 cm and an on-design flow velocity of about 6 m/s. Particle Image Velocimetry was used to measure flow-field and flow main characteristics. Turbulence Intensity at different test chamber cross-sections was determined. The measured turbulence level was about 0.4 % at the test section entrance. A small increase in the turbulence intensity was registered along the test section. The obtained results were acceptable for a wind tunnel of that scale. Therefore, this wind tunnel may be used, for example, to test the flow-field around aerofoils. A preliminary test on a NACA 0012 aerofoil was carried out. The result proved to be compatible with the aerodynamics theory as well as the scientific literature. Thus, the wind tunnel results may be used to calibrate and verify Computational Fluid Dynamics mathematical models.