泵叶片结冰后的特性数值模拟研究  

Numerical simulation study on the characteristics after icing formation on pump blades

作　　者：马飞 张永昇 MA Fei;ZHANG Yongsheng(Beijing Energy Holding Co.,Ltd.,Beijing 100000,China;Hebei Zhuozhou Jingyuan Thermal Power Co.,Ltd.,Zhuozhou 072750,China)

机构地区：[1]北京能源集团有限责任公司,北京100000 [2]河北涿州京源热电有限责任公司,河北涿州072750

出　　处：《区域供热》2024年第5期106-111,共6页District Heating

摘　　要：通过数值模拟探讨了电厂工作环境中泵叶片结冰对其特性的影响。考察了不同来流温度和液态水含量(LWC)下的结冰特性和传热系数(HTC)的变化规律。结果表明,随着来流温度的降低,泵叶片表面逐渐出现结冰现象,导致传热系数增加。同时,增加LWC显著提高了结冰区域的传热系数,表现为局部热传递的尖锐峰值。结合来流温度和LWC的影响,揭示了在寒冷高湿环境下结冰的复杂特性。研究结果为深入理解泵叶片结冰机理和设计防冰系统提供了重要参考。This study investigates the impact of pump blade icing on its characteristics in the working environment of power plants through numerical simulations.The icing characteristics and variations in heat transfer coefficients(HTC)were examined under different inflow temperatures and liquid water content(LWC)conditions.The results indicate a significant increase in surface icing on pump blades with decreasing inflow temperatures,leading to an increase in heat transfer coefficients.Simultaneously,an elevated LWC substantially enhances the heat transfer coefficients in the icing region,manifesting as sharp peaks in local heat transfer.By considering the combined effects of inflow temperature and LWC,the study reveals the intricate characteristics of icing in cold and humid environments.These findings provide crucial insights for a deeper understanding of the pump blade icing mechanism and the design of effective anti-icing systems.

关 键 词：泵叶片 结冰特性 传热系数 液态水含量 来流温度 

分 类 号：TM62[电气工程—电力系统及自动化]