拖曳水池随车式PIV测量不确定度分析研究(张军; 张志荣; 朱建良; 俞建新)

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【作者】张军; 张志荣; 朱建良; 俞建新 【作者单位】中船重工集团第七0二研究所水利论文!j uiLt*T

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"{!Qq}|/]!b0【论文摘要】 本研究针对大型拖曳水池随车式数字化2D-PIV 系统,开展了流场测量不确定度分析研究。以水下标模为对象,考察了成像系数标定、粒子图像诊断、拖车速度及测量点空间定位等因素对平均速度测量的影响。通过大批量试验,考察了随机测量误差的影响.本研究获得了平均速度分量的测量不确定度,建立了拖曳水池新随车式2D-PIV 测量不确定度的分析方法.水利论文\{&AN]

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【英文论文摘要】 The means for uncertainty assessment on the towing PIV system in towing tank of CSSRC was investigated in the paper.The bias limit of the width of the camera view in the object,the width of the digital image,the mean particle displacement component S,and the towing carriage speed Uc, the exposure time interval was assessed,respectively.Large-sample test data was used to inspect the random measurement error,and get the precision limit of the measured variables.The total uncertainty for the results is defined as the RSS of the bias and precision limits.The uncertainty assessment of the measurement results follows the AIAA Standard (1995).The present paper supplies a means of uncertainty assessment for the towing PIV system in towing tank.水利论文V)Kg m@wB

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【论文关键词】 PIV; 不确定度分析; 流场测量; 拖曳水池
4Zf*i:}:W8H0【英文论文关键词】 uncertainty assessment; towing tank; PIV水利论文UJ2i$F)N A,x

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TAG: PIV 张军 张志荣 俞建新 朱建良
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