Homotopy Perturbation Method for Thin Film Flow and Heat Transfer over an Unsteady Stretching Sheet with Internal Heating and Variable Heat Flux

Table 1

Comparison of values of skin friction coefficient −𝑓′′(0) and 𝛽=𝛾^1/2 using HPM.

𝑆	−𝑓^(0)		𝛽=𝛾^1/2
	Wang [13]	Present work	Wang [13]	Present study
0.4	6.69912	6.699108	5.12249	5.12246
0.6	3.74233	3.742316	3.13125	3.131252
0.8	2.68094	2.680943	2.15199	2.151989
1	1.97238	1.972317	1.54362	1.543622
1.2	1.442631	1.442621	1.12778	1.127779
1.4	1.012784	1.012735	0.821032	0.821033
1.6	0.642397	0.642368	0.576173	0.576171
1.8	0.309137	0.309134	0.356389	0.35639