The calculation of turbulent flow in wideangle diffusers
Abstract
The present investigation is concerned with the calculation of flow in conical, wideangle diffusers where axisymmetric separation is common. The investigation has the objective to develop and test a numerical method for calculating the properties of turbulent flows in wideangle diffusers with and without swirl. The method can also be applied to smallangle diffusers. The steady, twodimensional elliptic equations, used to represent the turbulent recirculating flows with and without swirl in the diffuser, are expressed in orthogonal curvilinear coordinates and solved in finitedifference form with computer storage (23k words) and run times (approximately 300 s of CDC 6400) which are acceptable in engineering practice. A comparison of calculated and experimental results indicates that the general features of the flow field are correctly predicted.
 Publication:

Numerical Heat Transfer
 Pub Date:
 June 1982
 Bibcode:
 1982NumHT...5..145H
 Keywords:

 Computational Fluid Dynamics;
 Diffusers;
 Flow Distribution;
 Recirculative Fluid Flow;
 Spherical Coordinates;
 Turbulent Flow;
 Differential Equations;
 Flow Measurement;
 Flow Velocity;
 Kinetic Energy;
 Stress Functions;
 Fluid Mechanics and Heat Transfer