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

Table 4

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	1.418772	1.419039	0.018778
𝑅=−0.5	1.397766	1.399917	0.153681
𝑅=0.5	1.481791	1.491195	0.630644
𝑅=1	1.460785	1.464232	0.235434