Numerical simulation of three dimensional flows in duct
Abstract
The validity of various simplifying assumptions for reducing the number of variables in the NavierStokes equations for numerical computations of incompressible viscous flows is examined. Attention is focused on flows in a channel with a square crosssection. Two simplification methods are investigated for parabolization of the equations, and one multigrid technique is explored. The schemes are applied to flows at the entrance of a rectangular duct with Re between 10 and 1000. Error parameters are defined for comparing the accuracy of the two methods involving a parabolization of the equations. It is found that errors due to simplifying assumptions can be avoided by using a multigrid technique, which will be accompanied by only a small increase in computing time.
 Publication:

Numerical Methods in Laminar and Turbulent Flow
 Pub Date:
 1981
 Bibcode:
 1981nmlt.proc..167F
 Keywords:

 Computational Fluid Dynamics;
 Ducted Flow;
 Incompressible Flow;
 Three Dimensional Flow;
 Viscous Flow;
 Flow Distribution;
 NavierStokes Equation;
 Parabolas;
 Fluid Mechanics and Heat Transfer