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电磁场中圆柱绕流的开环和优化控制 被引量：2

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摘要 对圆柱绕流的电磁控制进行了实验和数值研究.实验在转动水槽中进行,通过吊杆将装有电磁激活板的圆柱插在槽内液体中.吊杆上的应变片用于测试圆柱的阻力,注入适当的染料用来显示流场.数值模拟时,流场的基本方程为指数极坐标中考虑场力的Navier-Stokes方程,计算采用ADI格式和FFT格式.结果表明,实验与计算所描述的流场具有相同的变化趋势.在开环控制时,即Lorentz力为常数时,旋涡脱体可被有效抑制,涡街消除,阻力减少.另外,基于上述Navier-Stokes方程,推导了优化控制所需的伴随方程,并利用同样的数值方法对此进行数值求解.根据伴随优化理论得到实时变化的优化控制参数,对优化控制过程中的流场变化进行了讨论.
作者 张辉 范宝春 陈志华 董刚 周本谋
机构地区 南京理工大学瞬态物理实验室
出处 《科学通报》 EI CAS CSCD 北大核心 2008年第9期1026-1031,共6页 Chinese Science Bulletin
关键词 圆柱绕流 电磁流体力学 流体控制 优化控制
分类号 O361 [理学—流体力学]
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参考文献20

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共引文献42

同被引文献21

  • 1周本谋,范宝春,陈志华,叶经方,丁汉新,靳建明.流体边界层上电磁力的控制效应研究[J].力学学报,2004,36(4):472-478. 被引量：22
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  • 10Henoch C, Stace J. Experimental investigation of a salt water turbulent boundary layer modified by an applied streamwise magnetohydrodynamic body force. Phys Fluids, 1995, 7(6): 1371 -1383.

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科学通报
2008年 第9期

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