An Exact Solution for a Boundary Value Problem with Application in Fluid Mechanics and Comparison with the Regular Perturbation Solution

Figure 12

Axial velocity versus y at α = 0.05; a = 0.2; b = 0.6; d = 0.8; ϵ = 0.2; λ ₁ = 1; q = −1; x = 𝜋/6; ϕ = 𝜋/2.