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�������պ����ѧѧ�� 2002, Vol. 28 Issue (5) :559-562    DOI:
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Measurements of Velocity Uniformity in Watertunnel Using DPIV
HUANG Zhan, SHEN Gong-xin, WEI Run-jie, GUO Hui*
Beijing University of Aeronautics and Astronautics, Dept. of Flight Vehicle Design and Applied Mechanics

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Abstract�� A Digital Particle Image Velocimetry(DPIV)system using a special Pre-bias method was applied to flow field calibration measurements in the testing section of a water tunnel. Compared with the measurement results obtained by traditional methods (Pitot probe, LDV and traditional DPIV),the results show that the special Pre-bias method can improve measurement accuracy with almost one order level and is fit for flow field velocity uniformity measurement.
Keywords�� water tunnels   flow field calibration tests   precision   DPIV   pre-bias method     
Received 2001-02-19;
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HUANG Zhan, SHEN Gong-xin, WEI Run-jie, GUO Hui.Measurements of Velocity Uniformity in Watertunnel Using DPIV[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2002,V28(5): 559-562
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