| 较低雷诺数零升阻力估算方法研究 |
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| 引用本文： | 任钟霖,王正平,张戈.较低雷诺数零升阻力估算方法研究[J].航空计算技术,2011,41(6):29-31,36. |
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| 作者姓名： | 任钟霖 王正平 张戈 |
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| 作者单位： | 西北工业大学航空学院无人机特种技术重点实验室,陕西西安,710072 |
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| 基金项目： | 国防基础科学预研基金项目资助 |
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| 摘 要： | 根据层流和湍流的摩擦阻力估算公式,建立较低雷诺数条件下当量摩擦阻力系数的计算模型来估算零升阻力系数。通过对估算方法进行验证和分析,研究较低雷诺数时零升阻力系数随雷诺数的变化趋势。结果表明,建立的估算方法合理,并且准确地反映了零升阻力系数在较大雷诺数范围内的变化规律。
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| 关 键 词： | 零升阻力 较低雷诺数 当量摩擦阻力系数 阻力发散雷诺数 |
Research on Estimation Method of Zero- lift Drag at Lower- Reynolds- Number |
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| REN Zhong-lin,WANG Zheng-ping,ZHANG Ge.Research on Estimation Method of Zero- lift Drag at Lower- Reynolds- Number[J].Aeronautical Computer Technique,2011,41(6):29-31,36. |
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| Authors: | REN Zhong-lin WANG Zheng-ping ZHANG Ge |
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| Institution: | (School of Aeronautics,Northwestern Polytechnical University and Science and Technology on UVA Laboratory, Xi′an 710072,China) |
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| Abstract: | According to the estimation formula of the laminar and turbulent frictional drag,establish the calculation model of the equivalent frictional drag coefficient to estimate zero-lift drag coefficient at lower Reynolds number.Through verifying and analysing the estimation method,research the trend that the zero-lift drag coefficient varies with Reynolds number at lower Reynolds number.The result shows that the estimation established method is reasonable,and this method accurately reflects the regular pattern that the zero-lift drag coefficient varies in larger Reynolds number range. |
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| Keywords: | zero-lift drag lower-reynolds-number equivalent frictional drag coefficient drag divergence Reynolds number |
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