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| Numerical study on MHD flow of a nanofluid over a stretching/shrinking wedge |
| Received:March 15, 2019 Revised:May 11, 2019 |
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| DOI：10.7511/jslx20190315001 |
| KeyWord:nanofluid stretching/shrinking wedge numerical study dual solutions boundary layer separation |
| Author | Institution |
| 许晓勤 |
福建船政交通职业学院 汽车运用工程系, 福州 ;福州大学 机械工程及自动化学院, 福州 |
| 陈淑梅 |
福州大学 机械工程及自动化学院, 福州 |
| 林绍义 |
福建船政交通职业学院 汽车运用工程系, 福州 |
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| Abstract: |
| Numerical study on Magneto-Hydro Dynamics (MHD) flow of a nanofluid over a stretching/shrinking wedge is carried out in this paper.The governing partial differential equations are first converted into a set of non-linear ordinary differential equations by similarity transformations,and then solved numerically using a shooting method coupled with the fourth-fifth-order Runge-Kutta integration technique.The whole calculation process is completed by the program code written in MATLAB language.The effects of the governing parameters on the dimensionless velocity,temperature,concentration,skin friction coefficient,local Nusselt number and local Sherwood number are graphically presented and discussed in detail.The results show that in the stretching case,the solution is unique and theoretically there is no separation in the boundary layer flow.While dual solutions exist for a certain range of shrinking strength and separation may occur in the boundary layer flow on the wall.The outcomes indicate that suction delays the separation.The paper also concludes that the effect of the magnetic parameter on the skin friction coefficient is greater than that of the local Nusselt number and local Sherwood number in the stretching case. |
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