单柔性水生植物与明渠水流流固耦合数值模拟研究  

Numerical Simulation of Fluid-structure Interaction between Single Flexible Aquatic Vegetation and Open Channel Water Flow

作　　者：马帅 孙佳豪 常建龙 MA Shuai;SUN Jia-hao;CHANG Jian-long(Intelligent Weapon Research Institute,North University of China,Taiyuan 030051,China)

机构地区：[1]中北大学智能武器研究院,太原030051

出　　处：《价值工程》2024年第34期126-129,共4页Value Engineering

基　　金：山西省水利科学技术研究与推广项目:含茎叶柔性水生植被与明渠水流双向耦合特性数值模拟研究。

摘　　要：为了研究单柔性水生植物与明渠水流之间的相互作用特性,基于Fluent 2022流体力学计算软件,使用Structure模型和动网格技术,建立了单柔性水生植物与明渠水流双向流固耦合数值仿真模型。计算得到了水生植物在明渠水流作用下的运动规律以及植物应力变化规律,并分析水生植物摆动对水流的影响。研究结果表明:水生植物在受到明渠水流作用后,会快速弯曲到最大并逐渐稳定,植物的弯曲形变过程较为明显的改变水流流态,在水生植物附近的明渠水流由平行水流变为旋转涡流。本文计算工况中水生植物最大形变为32mm,最大应力为35.4MPa。In order to study the interaction characteristics between flexible aquatic vegetation and open channel water flow,a Fluid-structure interaction numerical simulation model of single flexible aquatic plants and open channel water flow was established based on Fluent 2022 fluid dynamics calculation software,using structure model and dynamic grid technology.The motion and stress changes of aquatic vegetation under the action of open channel water flow were calculated,and the impact of aquatic vegetation oscillation on water flow was analyzed.The research results indicate that aquatic vegetation quickly bend to their maximum and gradually stabilize under the action of open channel water flow.The swinging process of the vegetation significantly changes the flow state of the water,and the open channel water flow near the plants changes from parallel flow to rotating vortex.This paper calculates that the maximum deformation of aquatic vegetation under working conditions is 32mm,and the maximum stress is 35.4MPa.

关 键 词：柔性水生植物 明渠水流 流固耦合 

分 类 号：TV133[水利工程—水力学及河流动力学]