2020/11/27 by Ajaib S. Banyal, BANYAL, Ajaib S.
Computer Science · Engineering · #Fluid Dynamics and Thin Films #Fluid Dynamics and Turbulent Flows #Nonlinear Dynamics and Pattern Formation
paper · doi:10.24423/engtrans.105.2012
openalex publication_date 2020/11/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/01
A layer of Rivlin-Ericksen viscoelastic fluid heated from below is considered in the presence of an uniform vertical magnetic field and rotation. Following the linearized stability theory and normal mode analysis, this paper mathematically establishes the condition for characterizing oscillatory motion, which may be neutral or unstable, for rigid boundaries at the top and bottom of the fluid. It is established that all non-decaying slow motions starting from rest, in the configurations, are necessarily non-oscillatory in the regime TAF 2 + TA 4 + Qp2 2 1; where TA is the Taylor number, Q is the Chandrasekhar number, p2 is the magnetic Prandtl number, and F is the viscoelasticity parameter. This result is important, since it holds for all wave numbers for rigid boundaries of infinite horizontal extension at the top and bottom of the fluid, and the exact solutions of the problem investigated in closed form are not obtainable.