| 涡旋波流场的涡量测试与计算及特征参数的影响 |
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| 引用本文： | 刘志军,刘凤霞,王旭,史启财,李丰,周集体.涡旋波流场的涡量测试与计算及特征参数的影响[J].应用力学学报,2007,24(1):6-10. |
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| 作者姓名： | 刘志军 刘凤霞 王旭 史启财 李丰 周集体 |
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| 作者单位： | 大连理工大学,116012,大连 |
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| 摘 要： | 从实验和模拟计算两个方面,对涡旋波流场的速度矢量图和涡量进行了定量测试和综合分析,并对涡旋波流动与其特征影响参数之间的关系进行了研究。结果表明:涡旋波流动只在二维层流状态下产生,涡旋波形成后,Re数对旋涡尺寸的影响较小,涡量随Re数的增大而增大,但涡量不随时间的增加而单调增加。随着St数的减小,旋涡尺寸明显增大,涡量却随之减小。本文也对不同槽道内的涡旋波流场进行了数值模拟计算,进而确定了涡旋波流场的形成条件。
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| 关 键 词： | 涡旋波 涡量 振荡流 数值模拟 实验研究 |
| 文章编号： | 1000-4939（2007）01-0006-05 |
| 修稿时间： | 2005-04-132005-09-30 |
Test and Simulation of Vortex Wave Vorticity and Effects of Characteristic Parameters |
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| Liu Zhijun,Liu Fengxia,Wang Xu,Shi Qicai,Li Feng,Zhou Jiti.Test and Simulation of Vortex Wave Vorticity and Effects of Characteristic Parameters[J].Chinese Journal of Applied Mechanics,2007,24(1):6-10. |
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| Authors: | Liu Zhijun Liu Fengxia Wang Xu Shi Qicai Li Feng Zhou Jiti |
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| Abstract: | Velocity vectors and vorticity in vortex wave flow field are measured quantitatively and analyzed synthetically based on the numerical simulation and experiments.The relationship between the vortex wave flow and the characteristic parameters is investigated.It shows that only in two-dimensional laminar flow the vortex wave flow generates,and Re has little effects on the sizes of vortices once vortex wave appears,the vorticity increased with the inereasing Re,but does not linearly depend on time.With the decreasing St-number,sizes of vortices enlarge clearly,but the vorticity decreases accordingly.The numerical simulation in the vortex wave flow field of different channels are carried out and the generation conditions of vortex wave flow are confirmed. |
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| Keywords: | vortex wave vorticity oscillatory flow numerical simulation experimental research |
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