| 无伴流约束射流中的环流现象和湍流特性 |
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| 引用本文： | 赵黛青,丁健,史虹.无伴流约束射流中的环流现象和湍流特性[J].陶瓷科学与艺术,1994(4). |
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| 作者姓名： | 赵黛青 丁健 史虹 |
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| 作者单位： | 南京化工学院化学工程系 |
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| 摘 要： | 通过流场显示及激光多普勒测速仪测定湍流特性等实验方法考察了管内的无伴流约束射流。结果表明，在管内作无伴流射流时，环流区的起始点显著提前，环流区的终点位置基本不受射流流量的影响，但终点位置随射流入口直径变小而向下游移动，环流区中心轴上的湍流强度大幅度增强。
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| 关 键 词： | 约束射流，湍流，环流，伴流 |
RECIRCULATION PHENOMENA AND TURBULENCE CHARACTERISTICS IN NON-AMBIENT FLOW CONFINED JETS |
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| Zhao Daiqing,Ding Jian,Shi Hong.RECIRCULATION PHENOMENA AND TURBULENCE CHARACTERISTICS IN NON-AMBIENT FLOW CONFINED JETS[J].Ceramics Science & Art,1994(4). |
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| Authors: | Zhao Daiqing Ding Jian Shi Hong |
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| Abstract: | The recirculation phenomena and turbulence characteristics in non-ambient flow confined jets inside the tubes were explored.Laser Doppler Anemometry was used for the flow field visualization.The experimental results indicated that when the non-ambient flow confined Jets conducted in tubes,the initial point of recirculation zone advanced remarkably,the jets flow rate bssically have no effect upon position of ending point,but the ending point moved down stream with decrease of diameter of Jet port,and the turbulent strength largely increased in the axis of reclrculation zone. |
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| Keywords: | confined jets turbulence ambient flow recirculation |
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