Symmetry Methods of Flow and Heat Transfer between Slowly Expanding or Contracting Walls

Table 2

Comparison between analytical and numerical solutions for self-axial velocity 𝑢/𝑥 at 𝑦=0.1. for 𝑅_𝑒=1, 𝛼=−0.5.

	Analytical method	Numerical method	Percentage error (%)
𝑅=−1	1.480690	1.480513	0.012005
𝑅=−0.5	1.501697	1.503207	0.100457
𝑅=0.5	1.417671	1.423694	0.423027
𝑅=1	1.438678	1.440991	0.160530