粘弹性流体作用下的船舶水动力特性研究

Research on hydrodynamic characteristics of ships under viscoelastic fluid

为了提高船舶、潜艇的航运性能,降低高速行进过程中的海水阻力,国内外对船舶的水动力特性研究和船型设计投入了大量的精力。粘弹性流体是一种介于粘性流体和弹性固体之间的流体,具有粘性和弹性2种特征,研究粘弹性流体下的船舶水动力特性可以模拟船舶在极端海洋气象条件下的水动力特性,对改善船型设计、提高船舶水动力性能有重要的作用。本文利用计算流体力学CFD技术和数值模拟软件Fluent,完成了船舶在粘弹性流体作用下的水动力仿真,并结合CFD计算软件Open FOAM对船舶在粘弹性流体的动力学特性进行分析,并完成基于Fluent的船舶水动力仿真。

In order to improve the shipping performance of ships and submarines and to reduce the resistance of sea water during high speed travel, a great deal of effort has been devoted to the study of ship hydrodynamic characteristics and ship design at home and abroad. Viscoelastic fluid is a fluid between viscous fluid and elastic solid, with viscous and elastic characteristics of two kinds of ships, the study on hydrodynamic characteristics of viscoelastic fluid can simulate ship hydrodynamic characteristics in extreme marine meteorological conditions, to improve the ship design, has an important role to improve ship hydrodynamic performance. This paper makes full use of Fluent software CFD technology and numerical simulation of fluid mechanics, the hydrodynamic simulation of ship in viscoelastic fluid under the action of combined with CFD software Open FOAM on the ship were analyzed in the dynamic characteristics of viscoelastic fluid, and completed the ship hydrodynamic simulation based on Fluent.