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Applied Mathematics and Mechanics (English Edition) ›› 2009, Vol. 30 ›› Issue (8): 957-968.

• Articles • 上一篇    下一篇

Prediction of nanoparticle transport and deposition in bends

林培锋1 林建忠1,2   

  1. 1. State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University,Hangzhou 310027, P. R. China;
    2. China Jiliang University, Hangzhou 310018, P. R. China
  • 收稿日期:2009-02-24 修回日期:2009-06-15 出版日期:2009-08-01 发布日期:2009-08-01

Prediction of nanoparticle transport and deposition in bends

 LIN Pei-Feng1, LIN Jian-Zhong1,2   

  1. 1. State Key Laboratory of Fluid Power Transmission and Control, Zhejiang University,Hangzhou 310027, P. R. China;
    2. China Jiliang University, Hangzhou 310018, P. R. China
  • Received:2009-02-24 Revised:2009-06-15 Online:2009-08-01 Published:2009-08-01

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摘要： Nanoparticle transport and deposition in bends with circular cross-section are solved for different Reynolds numbers and Schmidt numbers. The perturbation method is used in solving the equations. The results show that the particle transport patterns are similar and independent of the particle size and other parameters when suspended nanoparticles flow in a straight tube. At the outside edge, particle deposition is the most intensive, while deposition at the inside edge is the weakest. In the upper and lower parts of the tube, depositions are approximately the same for different Schmidt numbers. Curvatures of tube, Reynolds number, and Schmidt number have second-order, forthorder, and first-order effects on the relative deposition efficiency, respectively.

关键词: nanoparticles, transport, deposition, perturbation method, bends

Abstract: Nanoparticle transport and deposition in bends with circular cross-section are solved for different Reynolds numbers and Schmidt numbers. The perturbation method is used in solving the equations. The results show that the particle transport patterns are similar and independent of the particle size and other parameters when suspended nanoparticles flow in a straight tube. At the outside edge, particle deposition is the most intensive, while deposition at the inside edge is the weakest. In the upper and lower parts of the tube, depositions are approximately the same for different Schmidt numbers. Curvatures of tube, Reynolds number, and Schmidt number have second-order, forthorder, and first-order effects on the relative deposition efficiency, respectively.

Key words: nanoparticles, transport, deposition, perturbation method, bends

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