| BL模式在超声速湍流边界层中应用的检验 |
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| 引用本文： | 董明,周恒.BL模式在超声速湍流边界层中应用的检验[J].空气动力学学报,2009,27(1). |
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| 作者姓名： | 董明 周恒 |
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| 作者单位： | 天津大学力学系,天津,300072 |
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| 基金项目： | 国家自然科学基金重点项目 |
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| 摘 要： | 湍流模型是目前解决工程中湍流问题不可缺少的工具.然而它终究是建立在简化与假设的基础上的,其准确性必须经过实际的检验.对超声速边界层,由于缺乏系统的实验数据,检验工作很难做.本文以BL模型为例,通过可压缩湍流边界层的三个典型算例,与直接数值模拟(DNS)的结果作对比.分析了其成功及不足之处,以及影响其精度的若干因素,并检验了用BL模型预测转捩位置的有效性.
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| 关 键 词： | BL模型 直接数值模拟 可压缩湍流边界层 |
Examination of the application of BL model in supersonic turbulent boundary layers |
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| DONG Ming,ZHOU Heng.Examination of the application of BL model in supersonic turbulent boundary layers[J].Acta Aerodynamica Sinica,2009,27(1). |
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| Authors: | DONG Ming ZHOU Heng |
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| Institution: | Department of Mechanics;Tianjin University;Tianjin 300072;China |
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| Abstract: | At the present moment,turbulent modeling is a necessary tool in solving engineering turbulent problems.However,it is based on certain simplified assumptions,the accuracy of the results must be verified.For supersonic boundary layers,the examination may be difficult,because of the lack of systematic experimental data.In this article,BL model is used to study three typical cases of compressible turbulent boundary layer,for which,data from direct numerical simulation(DNS) are available for comparison.Its advan... |
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| Keywords: | BL model direct numerical simulation compressible turbulent boundary layer |
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