Special functions-based solutions of unsteady convective flow of a MHD Maxwell fluid for ramped wall temperature and velocity with concentration

Advances in Difference Equations

Jan Awrejcewicz¹  Muhammad Bilal Riaz²  Aziz Ur Rehman³  Muhammad Abbas⁴ 

[1] Department of Automation, Biomechanics and Mechatronics, Lodz University of Technology, 1/15 Stefanowskiego St., 90-924, Lodz, Poland;Department of Automation, Biomechanics and Mechatronics, Lodz University of Technology, 1/15 Stefanowskiego St., 90-924, Lodz, Poland;Department of Mathematics, University of Management and Technology, 54770, C-II Johar Town Lahore, Pakistan;Department of Mathematics, University of Management and Technology, 54770, C-II Johar Town Lahore, Pakistan;Department of Mathematics, University of Sargodha, 40100, Sargodha, Pakistan;

关键词: Special functions;    Laplace transform;    Maxwell fluid;    Ramped conditions;    Velocity field;    Porous material;   

DOI  :  10.1186/s13662-021-03657-6

来源: Springer

【 摘 要 】

In this paper a new approach is taken to find the exact solutions for generalized unsteady magnetohydrodynamic transport of a rate-type fluid near an unbounded upright plate and is analyzed for ramped wall temperature and velocity with constant concentration. The vertical plate is suspended in a porous medium and encounters radiation effects. Solutions based on special functions are obtained using an integral transform for an unsteady MHD Maxwell fluid in the presence of ramped velocity, temperature and constant concentration. The relations for Nusselt number and skin-friction coefficient are efficiently computed to precisely estimate the rate of heat transfer at the boundary and the shear stress. Results are also discussed in detail and demonstrated graphically using software to comprehensively analyze the dynamics of the proposed problem, and the physical impact of several system parameters, such as magnetic field M, Prandtl number Pr, the relaxation time λ, dimensionless time τ, Schmidt number Sc, Mass and Thermal Grashof numbers Gm and Gr, respectively, is studied. Furthermore, solutions for some recently published work are compared with the current study that endorses the authenticity of our derived results and proves that those investigations are limiting or special cases of the current problem.

【 授权许可】

CC BY