Flow non-uniformities in packed beds: effect on dispersion
Technical Report
·
OSTI ID:6585949
A general equation is derived for the dispersion coefficient in a packed bed under conditions of non-uniform, one dimensional flow. Predictions of the theory are analyzed for the simple case of two concentric annular regions in a cylindrical packed bed with different void fractions. Small differences in void fraction can lead to significant changes in the dispersion coefficient for the packed bed, both in laminar and turbulent flow regimes. The radial variations of the average residence time and spread of a pulse of non-reactive tracer are investigated.
- Research Organization:
- California Univ., Livermore (USA). Lawrence Livermore Lab.
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 6585949
- Report Number(s):
- UCID-17974
- Country of Publication:
- United States
- Language:
- English
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