Effect of turbulence on drag force in gas-particle two-phase flow had been investigated using numerical simulation. In order to select an accurate turbulence model, some promising models, such as standard k-ε model, RNG k-ε model and Realizable k-ε model, had been examined through calculating the flow over a backward-facing step. RNG k-ε model performing better than others had been used to simulate the turbulence flow over a spherical particle. In computation, the turbulence intensity was ranged from 10% to 80%, and the turbulence length scale from 10−5m to 4m. Results show that the turbulence length scale had a small effect on the drag force, except at small length scale. Comparing with the drag on a particle in laminar flow, the turbulence intensity enhances it comparatively, especially at small particle Reynolds numbers, which differs from the previous publications.
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ASME 2002 Joint U.S.-European Fluids Engineering Division Conference
July 14–18, 2002
Montreal, Quebec, Canada
Conference Sponsors:
- Fluids Engineering Division
ISBN:
0-7918-3616-9
PROCEEDINGS PAPER
Effect of Turbulence on Drag Force in Gas-Particle Two-Phase Flow
Changfu You,
Changfu You
Tsinghua University, Beijing, China
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Haiying Qi,
Haiying Qi
Tsinghua University, Beijing, China
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Xuchang Xu
Xuchang Xu
Tsinghua University, Beijing, China
Search for other works by this author on:
Changfu You
Tsinghua University, Beijing, China
Haiying Qi
Tsinghua University, Beijing, China
Xuchang Xu
Tsinghua University, Beijing, China
Paper No:
FEDSM2002-31221, pp. 381-384; 4 pages
Published Online:
February 24, 2009
Citation
You, C, Qi, H, & Xu, X. "Effect of Turbulence on Drag Force in Gas-Particle Two-Phase Flow." Proceedings of the ASME 2002 Joint U.S.-European Fluids Engineering Division Conference. Volume 2: Symposia and General Papers, Parts A and B. Montreal, Quebec, Canada. July 14–18, 2002. pp. 381-384. ASME. https://doi.org/10.1115/FEDSM2002-31221
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