两类Lagrangian对流模型的动力学性质

Dynamical Bchaviour on Two Classes of Models of Lagrangian Advection

研究两个静态流体流动的数学模型，通过广义Ｈａｍｉｌｔｏｎ扰动系统理论分析，我们严格地证明了这些系统周期解的存在性与不存在性。为流体动力学的分析与理解提供理论依据。

It is considered that two systems of three-dimensional steady fluid flows.By uing the theoryof perturbed generalized HamiItonian systems, the existence and nonexistence of PeriOdiC solutions forthese systems can be proved.