| 冷热两股气流在圆管内掺混的速度场、温度场与辐射通量场的数值方法 |
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| 引用本文： | 刘德彰,赵冬梅.冷热两股气流在圆管内掺混的速度场、温度场与辐射通量场的数值方法[J].推进技术,1992,13(2):46-53. |
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| 作者姓名： | 刘德彰 赵冬梅 |
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| 作者单位： | 南京航空学院
(刘德彰)，南京航空学院(赵冬梅) |
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| 摘 要： | 用数值方法求解冷热两股轴对称平行射流在圆管内掺混的流场、温度场和辐射通量场。计算采用一种通用性的数值方法,其特点是强烈地以物理本质为基础,而不仅仅是单纯的数学推导。这样做,能方便地分析和解释计算结果,使之更真实地接近于实际。 通过计算,分析了当引射系数改变时,掺混的流场,温度场和辐射通量场的变化规律,其结果与实验数据比较一致。
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| 关 键 词： | 气流 速度场 温度分布 辐射通量 |
THE NUMERICAL METHOD FOR CALCULATING THE FLOW FIELD,TEMPERATURE FIELD AND RADIATION FLUXFIELD IN THE PIPE |
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| u Dezhang and hao Dongmei.THE NUMERICAL METHOD FOR CALCULATING THE FLOW FIELD,TEMPERATURE FIELD AND RADIATION FLUXFIELD IN THE PIPE[J].Journal of Propulsion Technology,1992,13(2):46-53. |
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| Authors: | u Dezhang and hao Dongmei |
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| Institution: | Nanjing Aeronautical Institute |
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| Abstract: | The flow field,temperature field and radiation flux field formed by mixing the coaxial parallel cold air with hot gas in the pipe,caused by ejection of aeroengine exhaust gas into surrounding air, numerically calculated in this paper0It is based on physical principles instead of pure mathematical deduction, in order to analyse and explain the calculation results and to make the calculation results approach the experimental results properly.
The flow field,temperature field and infrared radiation flux field have been studied by changing the ejection coefficient with numerical method. The results of numerical calculation are in good agreement with the data of experiment. |
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| Keywords: | Gas flow Mixing Velocity field Temperature distribution Radiation flux Numerical analysis |
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