| 楔形钝体二维绕流的简化积分模型 |
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| 引用本文： | 米建春.楔形钝体二维绕流的简化积分模型[J].长沙理工大学学报(社会科学版),1988(4). |
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| 作者姓名： | 米建春 |
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| 作者单位： | 长沙水电师院电力系 |
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| 摘 要： | 本文应用动量积分定理,在一定的条件下导出了描述楔形钝体二锥绕流回流区特性的方程组。该方程组将回流区长度、钝体锥角以及钝体、喷口边宽比联系在一起。用迭代法求解方程。所得结果表明:回流区无因次长度l/d随钝体、喷口边宽比d/b。作单调降变化,随钝体锥角θ的变化是先增后降;另外,d/b。的减少或者θ的增大会引起无因次物理量(2△ρ/ρu_0~2)和(2τ_p/ρu_0~2)的增大。与有限的实验结果比较发现:理论和实验基本上是一致的。
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| 关 键 词： | 钝体 二维流 动量定理 回流区 |
A SIMPLIFIED INTEGRATAL MODEL OF TWO-DIMENSIONAL FLOW AROUND A WEDGESHAPED BLUFF-BODY |
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| Mi Jianchun Electricai Engineering.A SIMPLIFIED INTEGRATAL MODEL OF TWO-DIMENSIONAL FLOW AROUND A WEDGESHAPED BLUFF-BODY[J].Journal of Changsha University of Science & Technology,1988(4). |
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| Authors: | Mi Jianchun Electricai Engineering |
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| Institution: | Mi Jianchun Electricai Engineering Department |
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| Abstract: | Appling the momentum law of integration on some condition, we are ableto get a set of equations which describe the characteristic of the recirculationzone of the two-dimensional flow around a wedge-shaped bluff-body. Theseequations connect the length of the bluff-body recirculations zone with itsangle and the ratio of its width to that of the exit. Comparing the results from solving these equations with those from theexperiments by some other investigators, we can know the theory is consistentwith the experiment on the whole. |
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| Keywords: | bluff-body two-dimensional flow the momentum law recirculation zone |
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