实现环流速度场的推流器布置  

Impellers layout for achieving circumfluent velocity field

作　　者：陈云峰[1] 胡林[2] 张彦辉[1] 胡洪平[2] 

机构地区：[1]安徽省环境科学研究院,合肥230000 [2]华中科技大学力学系,武汉430074

出　　处：《应用力学学报》2011年第6期654-657,678,共4页Chinese Journal of Applied Mechanics

基　　金：国家重大科技专项"水专项"子课题(2008ZX07103-004);中央高校基本科研业务费专项资金(2011QN184)

摘　　要：湖泊蓝藻控制的岸上实验,需要形成类似湖泊的风生流流场。本文通过方案比较,提出了经济可行的物理模拟方法,并利用Fluent对推流器形成的流场进行了三维数值模拟。数值结果表明:标准k-ε双方程湍流模型的计算结果与实验测试结果相符;通过比较多种布置方式下推流器形成速度场的数值结果,选用较为合理的三维推流器方案;通过加设导流板和调节推流器倾角,对该方案进行优化,得到了较为理想的上下环流速度场。It is necessary to make a flow field similar to wind-driven current for shore experiments of cyanobacteria bloom control.An economical physical simulation method is put forwarded to compare some schemes.A commercial software Fluent is used to simulate the three dimensional flow field formed by some impellers.Numerical results indicate that the results of standard k-ε turbulent model with 2 equations can be agreed with those from experiment rather than those from laminar flow model.A scheme with 3 impellers is chosen by comparing velocity fields formed by some kind of installation types of impellers.This scheme can be optimized by introducing deflector and modulating inclination of impeller.A more ideal velocity field is obtained with an upper and lower back loop cycle.

关 键 词：推流器 滑移网格 风生流 推流距离 

分 类 号：O368[理学—流体力学]