Dual Approximate Solutions of the Unsteady Viscous Flow over a Shrinking Cylinder with Optimal Homotopy Asymptotic Method

Table 1

Comparison between the skin friction coefficient 𝑓^′′_OHAM(1) and 𝑓^′′_numerical(1) (error = |𝑓^′′_OHAM(1)−𝑓^′′_numerical(1)|).

𝛾	𝑆	The first expression of the first-order; approximate solution
		𝑓^′′OHAM(1)	𝑓^′′numerical(1)	Error
1	−1	1.0000007544	0.9999999999	7.5⋅10^−7
1	−2	2.6012206647	2.6012206637	9.9⋅10^−10
2	−1	2.5632048369	2.5632048269	9.9⋅10^−9
2	−2	3.7150911381	3.7150910381	9.9⋅10^−8