Transient Heat and Fluid Flow through a Rotating Curved Rectangular Duct: The Case of Positive and Negative Rotation

摘要: Abstract A comprehensive numerical study is presented for the fully developed two-dimensional thermal flow of viscous incompressible fluid through a rotating curved rectangular duct constant curvature δ=0.1 Numerical calculations are carried out by using spectral method, and covering wide range Taylor number -1000 ≤ Tr 3000 Dean 100≤ Dn ≤1000 Grashof Gr 100. The outer wall heated while inner cooled. Flow characteristics investigated two cases rotation, Case I : Positive rotation II Negative rotation. For positive we investigate unsteady 0≤ ≤3000 it found that undergoes in scenario ‘ Chaotic→multi-periodic → periodic steady-state’ , if increased direction. negative however, behavior 1000≤ ≤100, various instabilities, Contours secondary patterns temperature profiles also obtained at several values there exist two- multi-vortex solutions involved both directions.