为二维的不可压缩的流动的海军司烧方程被用来在在液体气体之间的接口的行为上调查雷纳兹数字和威伯数字的效果砍流动。在现在的学习,密度比率在约 10 ~ 0-10 ~ 被修理 3。在二个阶段之间的接口用 level-setapproach 被解决。基于气体,雷纳兹数字和威伯数字分别地作为 400-10000 and40-5000 被选择。在过去,模拟重现接口生长的振幅预言了由粘滞 Orr-Sommerfeld 线性理论,在大量密度和粘性比率上验证数字方法的适用性和精确性;现在,系带的非线性的发展伸长了的模拟表演组织并且导致了更重的液体的随后的决裂进落下。
The Navier-Stokes equations for the two-dimensional incompressible flow are used to investigate the effects of the Reynolds number and the Weber number on the behavior of interface between liquid gas shear flow. In the present study, the density ratios are fixed at approximately 10^0-10^3. The interface between the two phases is resolved using the level-set approach. The Reynolds number and the Weber number, based on the gas, are selected as 400-10000 and 40-5000, respectively. In the past, simulations reappeared the amplitude of interface growth predicted by viscous Orr-Sommerfeld linear theory, verifying the applicability and accuracy of the numerical method over a wide range of density and viscosity ratios; now, the simulations show that the nonlinear development of ligament elongated structures and resulted in the subsequent breakup of the heavier fluid into drops.