A two-fluid model of turbulence and its application to heated plane jets and wakes
Abstract
A two-fluid model of turbulence is here employed for predicting velocity and temperature distributions in the turbulent and nonturbulent zones of free turbulent shear layers. The conservation equations of continuity, momentum, and temperature are solved numerically for the turbulent and nonturbulent fluids: and the Reynolds stress in the turbulent zone is computed from an eddy viscosity model by way of a modified form of the two-equation K-epsilon turbulence model. The model results in the prediction of the intermittency and of the velocity and temperature characteristics for both the turbulent and nonturbulent fluids. Comparison is made with experimental results for the self-preserving heated plane jet and for the self-preserving plane wake behind a heated circular cylinder. The results are shown to be in reasonable agreement with the experimental data; however, reasons are advanced for believing that a more symmetrical form of the interfluid mass-transfer law should be adopted.
- Publication:
-
PhysicoChemical Hydrodynamics
- Pub Date:
- 1984
- Bibcode:
- 1984PhChH...5..339S
- Keywords:
-
- Computational Fluid Dynamics;
- Shear Flow;
- Turbulence Models;
- Turbulent Jets;
- Turbulent Wakes;
- Two Fluid Models;
- Circular Cylinders;
- Conservation Equations;
- Eddy Viscosity;
- Entrainment;
- K-Epsilon Turbulence Model;
- Momentum Transfer;
- Reynolds Stress;
- Shear Layers;
- Fluid Mechanics and Heat Transfer