Unsteady three dimensional flow of Casson liquid film over a porous stretching sheet in the presence of uniform transverse magnetic field and suction/injection

详细信息    查看全文

• 作者：S. Maity^a ; ^{susantamaiti@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; S.K. Singh^b ; A.V. Kumar^a
• 关键词：Stretching surface ; Thin film ; Casson liquid ; Porous sheet ; Transverse magnetic field ; Asymptotic solutions
• 刊名：Journal of Magnetism and Magnetic Materials
• 出版年：2016
• 出版时间：1 December 2016
• 年：2016
• 卷：419
• 期：Complete
• 页码：292-300
• 全文大小：1036 K

文摘

Three dimensional flow of thin Casson liquid film over a porous unsteady stretching sheet is investigated under assumption of initial uniform film thickness. The effects of the uniform transverse magnetic field, suction and injection are also considered for investigation. The nonlinear governing set of equations and film evolution equation are solved analytically by using singular perturbation technique. It is found that the film thickness decreases with the increasing values of the Casson parameter. The Hartmann number and porosity parameter resist the film thinning process. It is also observed that the film thickness increases with the increasing values of the suction velocity whereas it decreases for increasing values of the injection velocity at the stretching surface.