Numerical simulation of microbubble flow around an axisymmetric body
Numerical simulation of microbubble flow around an axisymmetric body
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DOI：
10.1016/s1001-6058(06)60056-5
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发表时间：
2006-07
影响因子：
2.5
通讯作者：
Cheng-sheng Wu;Shu-long He;De-xiang Zhu;Mingzhou Gu
中科院分区：
文献类型：
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作者：
Cheng-sheng Wu;Shu-long He;De-xiang Zhu;Mingzhou Gu
本文对轴对称物体周围的微气泡流动进行了数值模拟。在数学模型中，将含有微气泡的流动处理为混合流，同时考虑了气泡与水之间的运动以及气泡的浮力。计算了不同直径的气泡、不同的气泡速度、不同的气泡喷射率等条件下，微气泡在物体周围的分布和减阻效果。计算结果与已发表的实验研究结论相吻合。对计算结果的分析表明，利用微气泡减阻的关键是产生足够少的气泡，并使它们附着在物体表面，以保持较高的含气率。
Numerical simulation of microbubble flow around an axisymmetric body was carried out in this paper. In the mathematic model, the flow with microbubbles was treated as mixture flow, the motion between bubbles and water together with buoyancy of bubbles were all taken into account. The distribution of microbubbles about the body and the drag reduction of the body were computed under different conditions, such as, using bubbles of different diameters, under different speeds of the body and bubble ejection rates. The computed results agree with the conclusions drawn from the published experimental studies. The analysis of the computed results indicates that the key of drag reduction by using microbubble is to produce bubbles little enough and keep them adhere to the body surface to maintain high void fraction.