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

Table 1

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	1.549755	1.549040	0.046138
𝑅=−0.5	1.575774	1.576305	0.033691
𝑅=0.5	1.471699	1.480956	0.625085
𝑅=1	1.497718	1.501653	0.262055