Two phase turbulent flow measurements in a ninety degree bend using laser doppler anemometry
This report is divided into two main parts. The first part provides detailed measurements of the mean air velocities and the corresponding turbulent stresses in a 90/sup 0/ bend of strong curvature ratio (R/sub r/ = R/D = 1.76) for high Reynolds numbers (2.2 x 10/sup 5/ and 3.74 x 10/sup 5/). To improve the understanding of turbulent high speed air flows in a 90/sup 0/ bend, we have provided as much information as possible about the mean and turbulent quantities of the flow; these have been presented in a form suitable for the evaluation of numerical techniques. The second part provides detailed measurements of the mean velocities and the corresponding turbulent stresses for the solid phase (50 and 100 ..mu..m glass beads), while maintaining the same flow conditions. The detailed observations should help the understanding of the physical phenomena occurring in suspension flows and assist with the development of mathematical models in turbulent two-phase flows.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 5304739
- Report Number(s):
- LBL-17244; ON: DE84007974
- Resource Relation:
- Other Information: Thesis
- Country of Publication:
- United States
- Language:
- English
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