Start-up shear flow of a shear-thinning fluid that approximates the response of viscoplastic fluids
作者：
Highlights：
• A shear-thinning fluid is studied for a variant of Stokes’ first problem.
• An analytical solution for velocity is obtained for a perturbation approximation.
• Numerical scheme is validated using analytical solution.
• Full equations are solved numerically, and effect of material moduli is assessed.
• Results are consistent with expectation for a viscoplastic fluid approximation.
摘要
•A shear-thinning fluid is studied for a variant of Stokes’ first problem.•An analytical solution for velocity is obtained for a perturbation approximation.•Numerical scheme is validated using analytical solution.•Full equations are solved numerically, and effect of material moduli is assessed.•Results are consistent with expectation for a viscoplastic fluid approximation.
论文关键词：Shear-thinning fluid,Viscoplastic model,Unsteady flow,Semi-inverse approach
论文评审过程：Received 2 April 2021, Revised 21 June 2021, Accepted 31 July 2021, Available online 16 August 2021, Version of Record 16 August 2021.
论文官网地址：https://doi.org/10.1016/j.amc.2021.126571
