The present study investigates the effects of tube roughness and wettability on oil-water flow regimes in mini channels. The tube material examined included borosilicate glass (i.e., e = 0.1 μm) and stainless steel (i.e., e = 5 μm). Flow patterns and pressure drop were measured and presented for different combinations of oil and water superficial velocities, 0.28–3.36 m/s and 0.07–5 m/s, respectively. Stratified, annular, intermittent, and dispersed flow regimes were observed in all tubes and between tubes, many similarities in flow regime emerged. Tube wettability affected flow regime and flow transition from stratified to annular and intermittent flows. Surface roughness had an observable effect overall flow regime and particularly on pressure drop measurements as stainless steel recorded higher pressure drops.
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ASME 2017 15th International Conference on Nanochannels, Microchannels, and Minichannels
August 27–30, 2017
Cambridge, Massachusetts, USA
Conference Sponsors:
- Fluids Engineering Division
ISBN:
978-0-7918-5830-1
PROCEEDINGS PAPER
Influence of Surface Roughness and Wettability on Oil-Water Flow Regimes in Circular Glass and Stainless Steel Mini-Channels
Kevin K. Bultongez,
Kevin K. Bultongez
Kansas State University, Manhattan, KS
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G. A. Riley,
G. A. Riley
Kansas State University, Manhattan, KS
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Melanie M. Derby
Melanie M. Derby
Kansas State University, Manhattan, KS
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Kevin K. Bultongez
Kansas State University, Manhattan, KS
G. A. Riley
Kansas State University, Manhattan, KS
Melanie M. Derby
Kansas State University, Manhattan, KS
Paper No:
ICNMM2017-5541, V001T03A002; 7 pages
Published Online:
November 10, 2017
Citation
Bultongez, KK, Riley, GA, & Derby, MM. "Influence of Surface Roughness and Wettability on Oil-Water Flow Regimes in Circular Glass and Stainless Steel Mini-Channels." Proceedings of the ASME 2017 15th International Conference on Nanochannels, Microchannels, and Minichannels. ASME 2017 15th International Conference on Nanochannels, Microchannels, and Minichannels. Cambridge, Massachusetts, USA. August 27–30, 2017. V001T03A002. ASME. https://doi.org/10.1115/ICNMM2017-5541
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