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Flow of Non-Newtonian Fluid in Curved Duct with Varying Aspect Ratio | ||
| Iraqi Journal of Science | ||
| Article 1, Volume 46, Issue 1, 2005, Pages 238-249 | ||
| Authors | ||
| Fathi S.A; Hadi A.M; Zainy A | ||
| Abstract | ||
| In this study consideration is given to viscous, incompressible, second order fluid flowing in a rectangular duct, with varying aspect ratio, under the action of the pressure gradient. In particular consideration is given to visco-inelastic liquid. An orthogonal coordinates system has been framed to describe the fluid motion and it is found that the motion equations are controlled by two parameters namely; Dean number and the Non-Newtonian parameter. Solutions for the secondary flow and the axial velocity are derived as perturbations over straight pipe appearing through the dean number. The finite-difference method is employed to find a perturbation solution. These solutions have been developed in certain coordinates for harmonic and biharmonic equations. This study ended with the effect of the non-dimensional and aspect ratio parameters mentioned above on the secondary motion. | ||
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