电场驱动直射流的动量方程

张若京; 候瑞鸿; 陈昌麒

doi:10.3879/j.issn.1000-0887.2011.12.003

电场驱动直射流的动量方程

doi: 10.3879/j.issn.1000-0887.2011.12.003

同济大学航空航天与力学学院,上海 200092;

基金项目: 国家自然科学基金资助项目(10772136);香港理工大学研究委员会(项目编号G-YE70)的资助

详细信息

作者简介:
张若京(1946- ),男,北京人,教授,博士(E-mail:zhangrj@tongji.edu.cn);陈昌麒,教授,博士(联系人.Tel:852-2766-6919;Fax:852-2334-4377;E-mail:ck.chan@polyu.edu.hk).

中图分类号: O358; O361.6; O361.3
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- 被引次数: 0
出版历程
- 收稿日期: 2011-01-19
- 修回日期: 2011-11-05
- 刊出日期: 2011-12-15

Momentum Equation for a Straight Electrically Charged Jet

School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, P. R. China;
Department of Applied Mathematics, Hong Kong Polytechnic University, Hong Kong, P. R. China

摘要

摘要: 给出了电场驱动直射流的一维动量守恒方程．该方程是用应力分量表示的，适用于任何流体本构关系，只要流体是不可压缩的．结果显示，为了使方程封闭，需要沿轴向和径向两个方向的本构关系．然而，当附加应力张量的迹为0时，只需要沿轴向的一个本构关系就足够了．还发现，射流的第二主应力差的零阶近似总为0．与其他类型的动量方程做了比较．
- 带电射流 /
- 稳定性 /
- 电纺
Abstract: A one-dimensional momentum conservation equation for a straight jet driven by an electrical field was developed. It was presented in terms of the stress component, which could be applied to any constitutive relation of fluids, and the only assumption was that the fluid was incompressible. Our results indicated that both the axial and the radial constitutive relations were required to close the governing equations of the straight charged jet. However, when the trace of the extra stress tensor was zero, only the axial constitutive relation was required. It was also found that the second normal stress difference for the charged jet was always zero. A comparison with other developed momentum equations was made.
- electrically charged jet /
- stability /
- electrospinning

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参考文献(16)

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