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在不相容、不等密度的双层液体的参数激励下的Faraday实验中,观察到了非传播界面波孤立子和扭结以及稳定的双孤立子等现象.总体上看,界面波现象和已有的表面波现象基本上一致,只是由于上层液体的存在,使得界面波的模式振动频率明显红移、波形变矮变宽、其稳定性也不如表面波.在理论上,对流体力学方程组及其相应的边界和界面条件进行了约化,得到了一个有阻尼、带驱动的非线性Schr(?)dinger方程.从而,令人满意地同时解释了界面孤立子波和扭结波.无论从实验现象上,还是从理论上看,自由表面波只是界面波的一个特例。
In the Faraday experiment under the excitation of incompatible and unequal density bilayers, non-propagating interface wave solitons and kinks and stable double solitons were observed.In general, the phenomena of interface wave and the existing Surface wave phenomenon is basically the same, only because of the presence of the upper liquid, making the mode of interface wave significantly redshift the mode frequency, the waveform becomes shorter and wider, its stability is not as good as the surface wave.In theory, the fluid mechanics equations and The corresponding boundary and interface conditions are reduced, and a damped, driven nonlinear Schrodinger equation is obtained, which makes it possible to satisfactorily explain the interface soliton and kink at the same time. Phenomenon, or in theory, the free surface wave is only a special case of interface wave.