Using the method of the parameter expansion up to the third order, explicitly investigates surface tension effect on harmonics at weakly nonlinear stage in Rayleigh-Taylor instability （RTI） for arbitrary Atwood numbers and compares the results with those of classical RTI within the framework of the third-order weakly nonlinear theory. It is found that surface tension strongly reduces the linear growth rate of time, resulting in mild growth of the amplitude of the fundamental mode, and changes amplitudes of the second and third har- monics, as is expressed as a tension factor coupling in amplitudes of the harmonics. On the one hand, surface tension can either decrease or increase the space amplitude; on the other hand, surface tension can also change their phases for some conditions which are explicitly determined.
本科毕业论文是高校教学工作的重要组成部分,体现高校的教学质量和水平.绵阳师范学院毕业论文通常在Word下编辑并完成.由于Word软件自身的缺陷,论文格式部分花费了指导教师和毕业生大量的时间和精力,从而严重影响了本科生毕业论文的质量. La Te X排版系统在论文格式等方面拥有明显优势,不仅可以节约排版时间而且可以提高论文规范化管理的质量.国外大部分高校以及国内部分高校已经开始使用La Te X排版软件.本文结合La Te X的特点对绵阳师范学院理科毕业论文Ctex模板进行了设计(模板代码见附件)并指出应用中应注意的几个方面.
