| 排放角度对平面负浮力射流的影响及射流远区特性分析 |
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| 引用本文： | 杨中华,槐文信,王驰,余新明. 排放角度对平面负浮力射流的影响及射流远区特性分析[J]. 武汉大学学报(工学版), 2005, 38(1): 34-38 |
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| 作者姓名： | 杨中华 槐文信 王驰 余新明 |
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| 作者单位： | 1. 武汉大学水资源与水电工程科学国家重点实验室,湖北,武汉,430072
2. 长江水利委员会长江中游水文水资源勘测局,湖北,武汉,430012 |
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| 基金项目： | 国家自然科学基金项目资助(50279037). |
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| 摘 要： | 采用κ-ε湍流模型和混合有限分析算法,对静止环境中多排放角度的平面负浮力射流进行了数值模拟,分析了射流角度和出口密度弗汝德数对负浮力射流特征量的影响,给出了考虑排放角度的最大上升高度计算公式.分析了垂直射流的远区特性,高密度流体以异重流形式向下游流动.
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| 关 键 词： | 平面负浮力射流 最大上升高度 远区特性 异重流 |
| 文章编号： | 1671-8844(2005)01-034-05 |
| 修稿时间： | 2003-09-10 |
Influence of injection anlges on planar negatively buoyant jets and characteristic analysis of far-field flow |
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| YANG Zhong-hua,Huai Wen-xin,WANG Chi,YU Xin-ming. Influence of injection anlges on planar negatively buoyant jets and characteristic analysis of far-field flow[J]. Engineering Journal of Wuhan University, 2005, 38(1): 34-38 |
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| Authors: | YANG Zhong-hua Huai Wen-xin WANG Chi YU Xin-ming |
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| Affiliation: | YANG Zhong-hua~1,HUAI Wen-xin~1,WANG Chi~2,YU Xin-ming~1 |
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| Abstract: | The κ-ε turbulent model is used to obtain a mathematical model of turbulent, planar dense jets. The hybrid finite analytic method and a stagger grid are used to calculate the whole field of this flow pattern. A new equation is given to predict the maximum penetration of planar dense jets with different injection angles and initial densimetric Froude number .Calculation of the far-field behavior indicated that the denseness flow is the main form of the far-field flow. The shape of the denseness flow head and velocity distribution on section are analyzed. |
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| Keywords: | planar negatively buoyant jets maximum penetration far-field behavior denseness flow |
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