Flow through curved ducts of decreasing area
Abstract
The problem of laminar flow through curved ducts of 180 deg bend angle with the crosssectional area decreasing along the axial direction is analyzed numerically. The parabolized form of the NavierStokes equations, in the primitive variable form, is solved using a finite difference technique. The results indicate an increase in the cross stream recirculation as well as in the axial pressure drop as the ratio of the outlet area to the inlet area decreases. The effect of Dean number on the flow field is same as in the case of constant area curved ducts.
 Publication:

23rd Joint Propulsion Conference
 Pub Date:
 June 1987
 Bibcode:
 1987jpsd.confU....K
 Keywords:

 Curvature;
 Ducted Flow;
 Finite Difference Theory;
 Flow Distribution;
 Flow Geometry;
 Laminar Flow;
 NavierStokes Equation;
 Parabolic Differential Equations;
 Pressure Distribution;
 Recirculative Fluid Flow;
 Velocity Distribution;
 Fluid Mechanics and Heat Transfer