Analysis of viscoelastic non-Newtonian fluid over a vertical forward-facing step using the Maxwell fractional model

作者：

Highlights：

• Unsteady of the fluid flow and heat transfer of natural convection of viscoelastic non-Newtonian fluid flow over a forward facing step was studied.

• The nonlinear equations are solved using a developed finite difference method mixed with a L-1 algorithm.

• The thermal and velocity boundary layer of the Maxwell fluid is higher than Newtonian fluid.

• The Nusselt number for the ordinary Maxwell fluid flow is greater than the Newtonian fluid flow over a backward facing step and flat plate.

摘要

•Unsteady of the fluid flow and heat transfer of natural convection of viscoelastic non-Newtonian fluid flow over a forward facing step was studied.•The nonlinear equations are solved using a developed finite difference method mixed with a L-1 algorithm.•The thermal and velocity boundary layer of the Maxwell fluid is higher than Newtonian fluid.•The Nusselt number for the ordinary Maxwell fluid flow is greater than the Newtonian fluid flow over a backward facing step and flat plate.

论文关键词：Fractional model,Viscoelastic fluid,Unsteady natural convection,Maxwell,Forward-facing step

论文评审过程：Received 30 January 2020, Revised 29 December 2020, Accepted 16 February 2021, Available online 26 February 2021, Version of Record 26 February 2021.

论文官网地址：https://doi.org/10.1016/j.amc.2021.126119