1·The theoretical analysis and the finite element formulation are based on the assumption that liquid in the tank is an ideal fluid and the liquid flow in the tank is irrotational.
理论分析与形成有限元公式所作的基本假设是罐内液体为理想流体以及它的流动是无旋的。
2·It does not require irrotational conditions and the limitation of the ratio of wave length to water depth.