A classical remark on the compatibility of inlet velocity and pressure singularities: Finite-element visualizationKhalil Ur Rehman, M. S. Alqarni, R. Mahmood, N. Kousar and M. Y. MalikEur. Phys. J. Plus, 134 5 (2019) 230DOI: https://doi.org/10.1140/epjp/i2019-12628-8