Large Eddy Simulation of SGS Turbulent Kinetic Energy and SGS Turbulent Dissipation in a Backward-Facing Step Turbulent Flow |
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作者姓名: | 王兵 张会强 王希麟 |
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作者单位: | DepartmentofEngineeringMechanics,TsinghuaUniversity,Beijing100084 |
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摘 要: | The instantaneous and time-averaged statistic characteristics of the sub-grid scale (SGS) turbulent kinetic energy and SGS dissipation in a backward-facing step turbulent flow have been studied by large eddy simulation. The SGS turbulent kinetic energy and SGS turbulent dissipation vary in different flow regions and decrease with the flow developing spatially. The fluid molecular dissipation shares about 14% to 28% of the whole dissipation.
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关 键 词: | 动能 SGS湍流 大气流 直接数值模拟 涡流模拟 流体力学 |
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