| Momentum equation for straight electrically charged jet |
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| 作者姓名： | 张若京 |
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| 作者单位： | School of Aerospace Engineering and Applied Mechanics;Tongji University; |
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| 基金项目： | supported by the National Natural Science Foundation of China(No.10772136); the Research Committee of The Hong Kong Polytechnic University(No.G-YE70) |
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| 摘 要： |
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Momentum equation for straight electrically charged jet |
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| Ruo-jing Zhang,S. H. Hou,C. K. Chan.Momentum equation for straight electrically charged jet[J].Applied Mathematics and Mechanics(English Edition),2011,32(12):1515-1524. |
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| Authors: | Ruo-jing Zhang S H Hou C K Chan |
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| Institution: | Ruo-jing ZHANG1,S.H.HOU2,C.K.CHAN2(1.School of Aerospace Engineering and Applied Mechanics,Tongji University,Shanghai 200092,P.R.China,2.Department of Applied Mathematics,The Hong Kong Polytechnic University,Hong Kong,P.R.China) |
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| Abstract: | A one-dimensional momentum conservation equation for a straight jet driven by an electrical field is developed. It is presented
in terms of a stress component, which can be applied to any constitutive relation of fluids. The only assumption is that the
fluid is incompressible. The results indicate that both the axial and radial constitutive relations are required to close
the governing equations of the straight charged jet. However, when the trace of the extra stress tensor is zero, only the
axial constitutive relation is required. It is also found that the second normal stress difference for the charged jet is
always zero. The comparison with other developed momentum equations is made. |
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| Keywords: | electrically charged jet stability electrospinning |
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