A Finite Difference Method for Solving Unsteady Fractional Oldroyd-B Viscoelastic Flow Based on Caputo Derivative

Table 1

The relative error of the velocity on the centerline with time for three group coefficients.

Time (s)	Error 1	Error 2	Error 3
0.006	0.05384	0.04027	0.02548
0.012	0.05767	0.05164	0.02863
0.018	0.05973	0.06123	0.03205
0.024	0.03959	0.05671	0.03534
0.030	0.02836	0.05110	0.03863
0.036	0.01603	0.04329	0.04151
0.042	0.00959	0.03548	0.04356
0.048	0.00589	0.03178	0.04192
0.054	0.00890	0.02288	0.03986
0.060	0.01164	0.01836	0.03836
0.066	0.01397	0.01397	0.03740
0.072	0.01644	0.01014	0.03630
0.078	0.01932	0.00685	0.03534
0.084	0.02247	0.00329	0.03247
0.090	0.02493	0.00027	0.02562
0.096	0.02740	0.00301	0.01849
0.102	0.02959	0.00507	0.01521
0.108	0.03178	0.00699	0.01247
0.114	0.03384	0.00904	0.01411
0.120	0.03534	0.01137	0.01562