A finite element analysis of a twodimensional asymmetric relaxing channel flow by the kepsilon model
Abstract
Two types of modified boundary condition are presently adopted to improve the standard kepsilon turbulence model: (1) the condition on the kinetic energy in the wall layer, where the kinetic energy equation is used to close the system of equations, and (2) the condition on the streamwise mean velocity component. It is assumed that the Karman constant remains unique in the direction normal to the wall, while varying in the streamwise dimension. Mean velocity profiles were well predicted; when the kinetic energy equation is expressed in the difference form and used as the wall boundary condition, the results show a reasonably gradual kinetic energy decrease.
 Publication:

ISCFD Nagoya 1989  3rd International Symposium on Computational Fluid Dynamics
 Pub Date:
 1989
 Bibcode:
 1989cfd..symp..215W
 Keywords:

 Channel Flow;
 Computational Fluid Dynamics;
 Finite Element Method;
 Flow Distribution;
 Reynolds Stress;
 Two Dimensional Flow;
 Kinetic Energy;
 Relaxation (Mechanics);
 Reynolds Number;
 Fluid Mechanics and Heat Transfer