Experimental study on the drag coefficient of single bubbles rising in static non-Newtonian fluids in wellbore
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- 作者：Baojiang Suna ; sunbj1128@126.com" class="auth_mail" title="E-mail the corresponding author ; Yanli Guoa ; Zhiyuan Wanga ; Xiaogang Yangb ; Peibin Gongc ; Jintang Wanga ; Ning Wanga
- 关键词：Offshore drilling ; Bubble ; Drag coefficient ; Reynolds number ; Eö ; tvö ; s number
- 刊名：Journal of Natural Gas Science and Engineering
- 出版年：2015
- 出版时间：September 2015
- 年：2015
- 卷：26
- 期：Complete
- 页码：867-872
- 全文大小：1603 K
文摘
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We adopt a vertical, cylindrical wellbore mimic in the experiment.
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Drag coefficient increases with increased fluids viscosity, surface tension.
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Drag coefficient increases with increased bubble diameters.
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A new drag coefficient model for bubbles rising in wellbore was proposed.