双峰五阶非线性薛定谔方程中的拖曳力
Drag force in bimodal cubic-quintic nonlinear Schrödinger equation
摘要:
本文考虑两个二维五阶非线性薛定谔方程,通过排斥立方项耦合。我们分析的情况下,其中一个模式的探针块被包围的流体的其他一个,并分析它们的相互作用。我们发现一个实现的达朗贝尔悖论的小速度和非平凡的阻力较大的。我们目前的数值分析,包括搜索的静态和旅行形式保持的解决方案,以及在一些有代表性的例子中的动态演化的模拟。
英文摘要:
We consider a system of two cubic-quintic non-linear Schrödinger equations in two dimensions, coupled by repulsive cubic terms. We analyse situations in which a probe lump of one of the modes is surrounded by a fluid of the other one and analyse their interaction. We find a realization of D'Alembert's paradox for small velocities and non-trivial drag forces for larger ones. We present numerical analysis including the search of static and traveling form-preserving solutions along with simulations of the dynamical evolution in some representative examples.
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