Research Article

Estimation of the Shear Stress Parameter of a Power-Law Fluid

Table 2

Comparison between estimated values for and for .

−0.2500.50.75

(numerical) 0.39950.43260.35390.2534
(series) 0.39450.42780.34970.2504

Error −0.005−0.0048−0.0042−0.003

Improved () 0.39850.43180.35370.2544

(series) 3.743.0261.9851.415
Relative error in 4.1%4.8%6.1%6.7%

Improved (error ) 3.6152.9011.861.29