二维槽道湍流的标度律分析
Scaling law in two-dimensional turbulent channel flow
查看参考文献11篇
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文摘
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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。将所得计算值和佘振苏等人的SL标度律预测值相比较，认为佘等人的SL标度律公式能很好描述二维湍流。 |
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其他语种文摘
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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 Reynoolds number. So, scaling exponent of fully developed 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. |
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来源
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力学学报
,2002,34(4):604-608 【核心库】
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关键词
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二维槽道湍流
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标度律
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奇异性
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地址
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1.
清华大学工程力学系SMC气动中心, 北京, 100084
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中国科学院力学研究所, LHD开放实验室, 北京, 100080
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中国科学院力学研究所, LNM国家重点实验室, 北京, 100080
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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0459-1879 |
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学科
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力学 |
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基金
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国家自然科学基金
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国家973计划
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文献收藏号
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CSCD:1013830
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参考文献 共
11
共1页
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