Twodimensional and threedimensional secondary flows in a plane channel, and their relationship and comparison with turbulent flows
Abstract
An effort is made to find a class of unsteady flows with steadystate integral characteristics in the case of constant external conditions, the investigation being conducted only on the basis of the NavierStokes equations for a viscous incompressible fluid without the aid of additional assumptions. These socalled secondary flows are examined for the case of a plane channel on the basis of the numerical integration of the NavierStokes equations using effective sufficiently precise algorithms. A class of two and threedimensional secondary flows is obtained whose quantitative and qualitative characteristics resemble those for turbulent flows as measured in physical experiments. An important finding is the good agreement between values of drag coefficient and mean velocity profile measured in turbulent flows and corresponding values for threedimensional secondary flows.
 Publication:

Akademiia Nauk SSSR Doklady
 Pub Date:
 1983
 Bibcode:
 1983DoSSR.273..553R
 Keywords:

 Channel Flow;
 NavierStokes Equation;
 Oscillating Flow;
 Secondary Flow;
 Turbulent Flow;
 Computational Fluid Dynamics;
 Drag;
 Flow Velocity;
 High Reynolds Number;
 Three Dimensional Flow;
 Two Dimensional Flow;
 Fluid Mechanics and Heat Transfer