椭圆管矩形翅片清洗影响因素的数值分析与优化  

Numerical Analysis and Optimization of Factors Affecting Rectangular Fins Elliptical Tube Cleaning

作　　者：王升龙[1] 王建江[1] 陈东伟 徐志明[1] 杨善让[1] 

机构地区：[1]东北电力大学能源与动力工程学院,吉林132012 [2]淄博伟创石油化工设计有限公司,淄博255400

出　　处：《汽轮机技术》2015年第1期53-56,共4页Turbine Technology

基　　金：国家自然科学基金(51076025)

摘　　要：对电站空冷凝汽器椭圆管矩形翅片空气侧进行了液固两相流清洗的数值模拟,分析了清洗流速、固相颗粒粒径、固相体积分数对壁面平均剪切应力及流动阻力的影响。确定最优清洗流速、固相颗粒粒径、固相体积分数的组合形式。结果表明:随着清洗流速、固相颗粒粒径、固相体积分数的增加,壁面平均剪切应力和流动阻力均持续增大并呈单调增加趋势;综合考虑清洗效果和节水节能,采用正交试验法分析确定清洗椭圆管矩形翅片的最优组合为入口流速14m/s,固相颗粒粒径0.4mm,固相体积分数0.06。结果为椭圆管矩形翅片的优化清洗提供理论基础。Numerical calculations were performed to analyze the liquid-solid two-phase cleaning inside the rectangular fins elliptical tube air side of air cooler used in power stations ,and the effects of the cleaning velocity ,solid particle size,solid volume fraction on the average wall shear stress and the flow resistance were discussed .Determine the combination form of optimal cleaning velocity ,solid phase particle size and solid phase volume fraction .The results showed that both the average wall shear stress and the flow resistance increased with the continue increase of cleaning velocity ,solid particle size,solid volume fraction appear monotonically increasing trend .Incorporating the cleaning effect and saving water and energy ,using the orthogonal experiment method to analysis and determine the cleaning elliptical tube of rectangular fins optimal combination of inlet velocity 14m/s, the solid particle size 0.4 mm, solid volume fraction 0.06.The results provide a theoretical basis for the optimization of cleaning rectangular fins elliptical tube .

关 键 词：椭圆管 清洗流速 流动阻力 数值模拟 

分 类 号：TK268.2[动力工程及工程热物理—动力机械及工程]