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| 二维槽道湍流的标度律分析 | |
| 引用本文： | 李新亮,马延文,傅德薰. 二维槽道湍流的标度律分析[J]. 力学学报, 2002, 34(4): 604-608 |
| 作者姓名： | 李新亮 马延文 傅德薰 |
| 作者单位： | 1. 清华大学工程力学系SMC气动中心,北京,100084 2. 中国科学院力学研究所LHD开放实验室,北京,100080 3. 中国科学院力学研究所LNM国家重点实验室,北京,100080 |
| 基金项目： | 国家自然科学基金（59876002）资助项目，国家基础研究发展规划资助项目（G1999032805） |
| 摘 要： | 对不同Reynolds数的二维不可压槽道湍流（即二维槽道流动的扰动饱和态）进行了标度律分析.指出二维槽道湍流中存在明显的标度律及扩展自相似性;分析了标度指数随着流动Reynolds数的变化,指出随着Reynolds数的增长,标度指数的奇异性并没有减小的趋势;由此推测充分发展的二维槽道湍流的标度指数也是奇异的、将所得计算值和余振苏等人的SL标度律预测值相比较,认为余等人的SL标度律公式能很好描述二维湍流. |
| 关 键 词： | 二维槽道湍流 标度律 奇异性 |
| 修稿时间： | 2000-02-20 |
SCALING LAW IN TWO-DIMENSIONAL TURBULENT CHANNEL FLOW |
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| Li Xinliang Ma Yanwen Fu Dexun. SCALING LAW IN TWO-DIMENSIONAL TURBULENT CHANNEL FLOW[J]. chinese journal of theoretical and applied mechanics, 2002, 34(4): 604-608 | |
| Authors: | Li Xinliang Ma Yanwen Fu Dexun |
| Abstract: | The scaling laws of velocity structure functions in two-dimensional fully developed incompressible turbulent channel flow with variable Reynolds numbers are studied. According to this paper, Scaling laws and Extended self-similarity exist in the turbulent channel flow. According to this paper, scaling exponent varies as Reynolds number changed, but the anomaly of scaling exponent does not decrease as the rising of Reynolds number. So, scaling exponent of fully de-veloped two-dimensional turbulent channel flow must be anomalous. The scaling exponent of this paper agrees well with the predicted value by SL theory, which means both results are believable. |
| Keywords: | two-dimensional turbulent channel flow scaling law anomalous |
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