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| ROUNDED FLOWING STATES OF OBSTRUCTED BUOYANT JET | |
| 引用本文： | 槐文信,方神光. ROUNDED FLOWING STATES OF OBSTRUCTED BUOYANT JET[J]. 应用数学和力学(英文版), 2006, 27(8): 1133-1139. DOI: 10.1007/s 10483-006-0814-z |
| 作者姓名： | 槐文信 方神光 |
| 作者单位： | State Key Laboratory of Water Resources and Hydropower Engineering Science Wuhan University，Wuhan 430072，P.R.China，Department of Hydraulic Engineering，Tsinghua University，Beijing 100084，P.R.China |
| 摘 要： | The mutual relationships of three effective factors, the diameter D/d (d is the diameter of exit) of obstructed plate, exit densimetric Froude number and the distance H/d of the plate from jet orifice for obstructed buoyant jet in static ambient, are analyzed to explain normal and abnormal rounded flowing (reverberated and bifurcated flowing). The critical Froude numbers for obstructed buoyant jets with H/d=2, 4, 6, 8 which distinguished normal and abnormal flowing pattern are obtained. Normal rounded flowing is found only for a plate under a special value of H/d. A fitted formula of critical Froude numbers with H/d and D/d is presented to distinguish rounded flowing types. The occurring of reverberated or bifurcated flowing in abnormal rounded flow is analyzed. Based on the results of obstructed buoyant jets with D/d=1, normal rounded flowing occurred only for all conditions and axial dilution behind the plate under different H/D is obtained. |
| 关 键 词： | 数字模拟 全流动模式 稀释度 相互关联 振动理论 |
| 文章编号： | 10.1007/s10483-006-0814-z |
| 收稿时间： | 2005-04-02 |
| 修稿时间： | 2006-05-12 |
Rounded flowing states of obstructed buoyant jet |
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| Wen-xin Huai Doctor,Shen-guang Fang. Rounded flowing states of obstructed buoyant jet[J]. Applied Mathematics and Mechanics(English Edition), 2006, 27(8): 1133-1139. DOI: 10.1007/s 10483-006-0814-z | |
| Authors: | Wen-xin Huai Doctor Shen-guang Fang |
| Affiliation: | 1. State Key Laboratory of Water Resources and Hydropower Engineering Science,Wuhan University,Wuhan 430072,P.R.China 2. Department of Hydraulic Engineering,Tsinghua University,Beijing 100084,P.R.China |
| Abstract: | The mutual relationships of three effective factors, the diameter D/d (d is the diameter of exit) of obstructed plate, exit densimetric Froude number and the distance H/d of the plate from jet orifice for obstructed buoyant jet in static ambient, are analyzed to explain normal and abnormal rounded flowing (reverberated and bifurcated flowing). The critical Froude numbers for obstructed buoyant jets with H/d=2, 4, 6, 8 which distinguished normal and abnormal flowing pattern are obtained. Normal rounded flowing is found only for a plate under a special value of H/d. A fitted formula of critical Froude numbers with H/d and D/d is presented to distinguish rounded flowing types. The occurring of reverberated or bifurcated flowing in abnormal rounded flow is analyzed. Based on the results of obstructed buoyant jets with D/d=1, normal rounded flowing occurred only for all conditions and axial dilution behind the plate under different H/D is obtained. |
| Keywords: | obstructed buoyant jets round jets numerical simulation rounded flowing pattern dilution |
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