by means of he's homotopy perturbation method (hpm) an approximate solution of velocity eld is derived for the ow in straight pipes of non-newtonian uid obeying the sisko model. the nonlinear equations governing the ow in pipe are for- mulated and analyzed, using homotopy perturbation method due to he. furthermore, the obtained solutions for velocity eld is graphically sketched and compared w...

In this work, we investigate the anisotropic Bianchi type I cosmological model in chiral set-up a twofold manner. Firstly, consider quintessence plus [Formula: see text]-essence-like model, where two scalar fields but only one potential term is considered. Secondly, look at addition to terms are taken into account as well standard kinetic energy and mixed term. Regarding second it shown that po...