Szukana fraza: [Abstract = "Numerical calculations are carried out for constant pressure gradient force, the Dean number Dn = 1000 and the Grashof number Gr=100 over a wide range of the Taylor number values \-1500 \? Tr \? 1500 for both positive and negative rotation of the duct. The software Code\:\:Blocks has been employed as the second programming tool to obtain numerical solutions. First, time evolution calculations of the unsteady solutions have been performed for positive rotation."]