| 模型燃烧室湍流亚网格尺度模型 |
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| 引用本文： | 颜应文,赵坚行,张靖周,刘勇,党新宪.模型燃烧室湍流亚网格尺度模型[J].南京航空航天大学学报,2009,41(4). |
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| 作者姓名： | 颜应文 赵坚行 张靖周 刘勇 党新宪 |
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| 作者单位： | 南京航空航天大学能源与动力学院,南京,210016 |
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| 基金项目： | 高等学校博士学科点专项科研基金 |
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| 摘 要： | 分别采用Smagorinsky-Lilly和k方程亚网格尺度模型,在任意曲线坐标系下对模型燃烧室湍流流场进行大涡模拟.分别用QUICK和二阶隐式差分格式离散控制方程及其时间项,并用SIMPLE算法进行求解.计算结果与PIV测量数据比较表明:大涡模拟方法能较好模拟旋流器后面回流区的瞬态变化,两种亚网格尺度模型都能较好模拟湍流流动,但k方程亚网格尺度模型稍优于Smagorinsky-Lilly亚网格尺度模型,因此采用k方程亚网格模型更适用于大涡模拟实际燃烧室复杂湍流流场.
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| 关 键 词： | 亚网格尺度模型 任意曲线坐标 湍流流场 粒子图像测光 |
Sub-grid Scale Model for Model Combustor |
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| Yan Yingwen,Zhao Jianxing,Zhang Jingzhou,Liu Yong,Dang Xinxian.Sub-grid Scale Model for Model Combustor[J].Journal of Nanjing University of Aeronautics & Astronautics,2009,41(4). |
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| Authors: | Yan Yingwen Zhao Jianxing Zhang Jingzhou Liu Yong Dang Xinxian |
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| Institution: | College of Energy and Power Engineering;Nanjing University of Aeronautics & Astronautics;Nanjing;210016;China |
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| Abstract: | In three-dimensional arbitrary curvilinear coordinates,large eddy simulations of turbulent flows in a model combustor are studied by Smagorinsky-Lilly sub-grid scale model and k-equation sub-grid scale model. QUICK scheme is used for the discretization of convective transport terms.Second-order implicit temporal discretization is applied for time terms,and discrete equations are solved by SIMPLE algorithm.The instantaneous change of the recirculation zone behind the swirler can be revealed by a large eddy s... |
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| Keywords: | sub-grid scale model arbitrary curve coordinates turbulence flow field particle image velocimetry |
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