TY - JOUR
T1 - Vertical upward intermediate scale Taylor flow
T2 - Experiments and kinematic closure
AU - Rattner, Alexander S.
AU - Garimella, Srinivas
N1 - Funding Information:
This project was sponsored by the Krell Institute through U.S. Department of Energy contract DE-FG02-97ER25308. The funding agencies were not materially involved in the research or reporting efforts.
Publisher Copyright:
© 2015 Elsevier Ltd.
PY - 2015/10/1
Y1 - 2015/10/1
N2 - The vertical upward Taylor flow regime has been extensively studied at the capillary and large channel scale limits. However, flow behavior at the intermediate scale (5≲Bo≲40, or 6. mm≲. D≲17. mm for ambient gas-water flows) is comparatively poorly characterized. This regime is fundamentally different because classes of forces conventionally associated with either small or large Bond number flows are all relevant. In this investigation, air-water Taylor-flow experiments are conducted in 6.0, 8.0, and 9.5. mm diameter tubes. High-speed video data are collected, and automated image analysis algorithms are developed to measure flow parameters including: bubble rise velocity, liquid film thickness, void fraction, and Taylor bubble and liquid slug lengths. New correlations and flow models are developed to predict these parameters at the intermediate scale. Results from this study enable kinematic closure of intermediate scale Taylor flows.
AB - The vertical upward Taylor flow regime has been extensively studied at the capillary and large channel scale limits. However, flow behavior at the intermediate scale (5≲Bo≲40, or 6. mm≲. D≲17. mm for ambient gas-water flows) is comparatively poorly characterized. This regime is fundamentally different because classes of forces conventionally associated with either small or large Bond number flows are all relevant. In this investigation, air-water Taylor-flow experiments are conducted in 6.0, 8.0, and 9.5. mm diameter tubes. High-speed video data are collected, and automated image analysis algorithms are developed to measure flow parameters including: bubble rise velocity, liquid film thickness, void fraction, and Taylor bubble and liquid slug lengths. New correlations and flow models are developed to predict these parameters at the intermediate scale. Results from this study enable kinematic closure of intermediate scale Taylor flows.
UR - http://www.scopus.com/inward/record.url?scp=84930676797&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84930676797&partnerID=8YFLogxK
U2 - 10.1016/j.ijmultiphaseflow.2015.04.007
DO - 10.1016/j.ijmultiphaseflow.2015.04.007
M3 - Article
AN - SCOPUS:84930676797
SN - 0301-9322
VL - 75
SP - 107
EP - 123
JO - International Journal of Multiphase Flow
JF - International Journal of Multiphase Flow
ER -