排灌机械工程学报2012，Vol.30Issue(2)：225-230,6.DOI:10.3969/j.issn.1674-8530.2012.02.020
荷电黏性液体射流线性不稳定性分析
Linear stability analysis for charged viscid liquid jets
摘要
Abstract
Based on the linear instability theory, the perturbed pressure and electric fields were analyzed and the dispersion equation of charged viscid liquid jet was established by force characteristics a-nalysis. Through numerical computations, the influence of jet velocity, charged voltage and viscosity on the instability of charged jet were obtained. The results show that with increasing jet velocity and charged voltage, the maximum of wave growth rate, corresponding optimal wave number, and the maximum of wave number get larger, and the droplet size gets smaller. Viscosity always makes the jet more stable. When viscosity is higher, the maximum of wave growth rate and corresponding optimal wave number get smaller so that the droplet size is bigger, but the maximum of wave number remains unchanged. For the jet with a velocity in the range of 0 to 1 m/s, the 0-order wave always exists regardless whether the jet is charged or not. The 1 -order wave appears on the surface of uncharged liquid jet only when the jet velocity reaches a certain value and high voltage makes the 1 -order wave occur in a lower jet velocity. The 0-order wave is dominant in jet breakup because the maximum growth rate of 0-order wave is larger than that of 1-order wave.关键词
荷电射流/不稳定性/色散方程/0阶表面波/1阶表面波Key words
charged jet/ instability/ dispersion equation /0-order wave /l-order wave分类
农业科技引用本文复制引用
王晓英,王军锋..荷电黏性液体射流线性不稳定性分析[J].排灌机械工程学报,2012,30(2):225-230,6.基金项目
国家自然科学基金资助项目(51006047) （51006047）
江苏省科技厅自然科学基金企业博士资助项目(BK2009705) （BK2009705）
江苏大学高级专业人才科研启动基金资助项目(09JDG068) （09JDG068）
