Numerical Investigation of Non-Newtonian Laminar Flow in a Curved Tube with Insert

A. Kadyyrov[1]
[1]Research Center for Power Engineering Problems, KSC, RAS, Russia

Non-Newtonian laminar flows in curved circular tubes with inserts are investigated by computer simulations. 0.65% solution of NaCMC is considered. Three-dimensional incompressible Navier-Stokes equations are solved using COMSOL Multiphysics. Placements of inserts inside the curved tubes and their effects on the hydrodynamics of the flow are studied. Computations are carried out with various values of Reynolds number ranging from 10 to 1000. For elbow #2 the most part of high velocity area is located in the center of the channel throughout its length. The twisted tape before the curved channel considered for elbow#2 reduces the pressure on the outer wall and consequently reduces the force on the pipe wall and increases its longevity.