Numerical determination of detached internal flow with the example of a radial compression tunnel
Abstract
The frictional, quasi-three-dimensional, stationary steady flow in a return tunnel is calculated by a numerical differential procedure based on Navier-Stokes and laminar and turbulent Reynolds equations. The tunnel boundary is taken to be of arbitrary shape: both curved walls and discontinuously broadened cross-sections are permitted. This calculative method forms the basis for a streamline-eddy procedure which is solved using the method of successive relaxations. The turbulence is evaluated with the help of the k-epsilon model. Various forms of secondary flow for irregular increases in the cross-section and return tunnel are considered. The results are compared with measurements from other authors and with turbulence measurements made during velocity fluctuations.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1984
- Bibcode:
- 1984PhDT........44B
- Keywords:
-
- Channel Flow;
- Compressors;
- Computational Fluid Dynamics;
- Radial Flow;
- Steady Flow;
- Differential Equations;
- Flow Distribution;
- K-Epsilon Turbulence Model;
- Laminar Flow;
- Navier-Stokes Equation;
- Reynolds Equation;
- Secondary Flow;
- Turbulent Flow;
- Fluid Mechanics and Heat Transfer