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Applied Mathematics and Mechanics (English Edition) ›› 2011, Vol. 32 ›› Issue (10): 1221-1230.doi: https://doi.org/10.1007/s10483-011-1495-9

• Articles •    下一篇

Analytical solution of magnetohydrodynamic sink flow

章骥1 方铁钢1 钟永芳2   

  1. 1. Mechanical and Aerospace Engineering Department, North Carolina State University, Raleigh, NC 27695, USA;
    2. School of Engineering, Penn State Erie, the Behrend College, Erie, PA 16563-1701, USA
  • 收稿日期:2010-06-22 修回日期:2011-06-17 出版日期:2011-10-09 发布日期:2011-10-09

Analytical solution of magnetohydrodynamic sink flow

ZHANG Ji1, FANG Tie-Gang1, ZHONG Yong-Fang2   

  1. 1. Mechanical and Aerospace Engineering Department, North Carolina State University, Raleigh, NC 27695, USA;
    2. School of Engineering, Penn State Erie, the Behrend College, Erie, PA 16563-1701, USA
  • Received:2010-06-22 Revised:2011-06-17 Online:2011-10-09 Published:2011-10-09

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摘要： An analytical solution to the famous Falkner-Skan equation for the magnetohydrodynamic (MHD) flow is obtained for a special case, namely, the sink flow with a velocity power index of –1. The solution is given in a closed form. Multiple solution branches are obtained. The effects of the magnetic parameter and the wall stretching parameter are analyzed. Interesting velocity profiles are observed with reversal flow regions even for a stationary wall. These solutions provide a rare case of the Falkner-Skan MHD flow with an analytical closed form formula. They greatly enrich the analytical solution for the celebrated Falkner-Skan equation and provide better understanding of this equation.

Abstract: An analytical solution to the famous Falkner-Skan equation for the magnetohydrodynamic (MHD) flow is obtained for a special case, namely, the sink flow with a velocity power index of –1. The solution is given in a closed form. Multiple solution branches are obtained. The effects of the magnetic parameter and the wall stretching parameter are analyzed. Interesting velocity profiles are observed with reversal flow regions even for a stationary wall. These solutions provide a rare case of the Falkner-Skan MHD flow with an analytical closed form formula. They greatly enrich the analytical solution for the celebrated Falkner-Skan equation and provide better understanding of this equation.

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