Swirling Flow in a Permeable Tube at Slowly Expanding and Contracting Wall

Table 2

Comparison of current analytic solution by HAM with the solution reported by Li et al. [17] for at .

Re	Asymptotic solution by Li et al. [17]	Numerical solution by Li et al. [17]	Current HAM solution
0.592	−2.0841	−2.0694	−2.0694
0.297	−2.0339	−2.0299	−2.0299
0.041	−1.9903	−1.9903	−1.9903
−0.052	1.9745	1.9744	1.9744
−0.141	1.9593	1.9584	1.9584
−0.422	1.9115	1.9015	1.9015