Hydrodynamics of Power-Law Fluids Over a Pair of Side-by-Side Rotating Circular Cylinders

The non-Newtonian power-law fluid flow over the two counter-rotating circular cylinders arranged side-by-side is investigated numerically using the finite element method. The numerical simulations are carried out in for a wide range of parameters: 0.2 ≤ n ≤ 1.8; 1 ≤ Re ≤ 40; 0.4 ≤ G ≤ 1; and 0 ≤ α ≤ 1.5. The impact of aforementioned factors on flow characteristics, including streamlines, center-line velocity, pressure coefficient (Cp) at the surface of cylinders, total drag ( \({C}_{D}\) ) and lift ( \({C}_{L}\) ) coefficients have been investigated. The \({C}_{p}\) increases with increasing \(\alpha\) whereas decreases with increasing \(G\) . The value of \({C}_{D}\) decreases with the increasing G and α.