20.500.12556/DKUM-26254 Symmetry breaking phenomena of purely viscous shear-thinning fluid flow in a locally constricted channel The goal of a present study is to investigate the effects of generalized Newtonian fluids on the threshold of the transition from flow symmetry to its asymmetry for the flow through a locally constricted channel. We consider purely viscous shear-thinning fluid and compare it with the Newtonian fluid. Fluid flow is studied numerically by solving the two dimensional momentum equations along with the continuity equation and the Carreau-Yasuda rheological model. We report systematic results in a range of generalized Reynolds number 250▫$leq$▫Re▫$leq$▫150 with a focus on its critical value. Results indicate that the shear-thinning viscous behaviour decreases the onset of bifurcation phenomena and the critical value of Reynolds number. Last but not least, a systematic grid refinement analysis and numerical accuracy study is performed and present numerical results may be treated as the benchmark. bifurcation inelastic shear-thinning fluid Carreau-Yasuda model numerical modelling true false false Angleški jezik Angleški jezik Neznano 2012-05-31 12:18:06 2012-05-31 12:18:06 2022-04-15 03:41:12 2024-01-03 03:23:03 2008 0 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 532.57:621.5 12570902 1726-4529 URN:SI:UM:DK:V5SEILRA http://dx.doi.org/10.2507/IJSIMM07(4)3.107 1 https://dk.um.si/Dokument.php?lang=slv&id=35208 Fakulteta za strojništvo 0 0 0