高温涡轮交叉肋冷却通道的流动换热特性研究  

Investigation on Flow and Heat Transfer Characteristics of Matrix Cooling Channel for High Temperature Turbine

作　　者：白超[1] 郭兆元 BAI Chao;GUO Zhao-yuan(The 705 Research Institute, China Shipbuilding Industry Corporation, Xi'an 710077, China;College of Power and Energy Engineering, Harbin Engineering University, Harbin 150001, China)

机构地区：[1]中国船舶重工集团公司第705研究所,陕西西安710077 [2]哈尔滨工程大学动力与能源学院,黑龙江哈尔滨150001

出　　处：《节能技术》2021年第3期225-231,共7页Energy Conservation Technology

摘　　要：本文在给定通道大小的条件下,研究了不同肋倾角、肋宽/子通道宽和不同子通道数7种方案在雷诺数10000~50000范围内的流动和换热情况。研究结果表明,交叉肋对子通道的流动影响十分显著,会产生二次流和纵向涡,能够大幅度地增强冷却通道的换热能力,但同时也会使阻力损失急剧上升。当肋倾角减小或者肋宽/子通道宽增大时,通道的换热能力和阻力损失均会增加,当子通道数增加时,换热能力增强。而对于阻力损失,通道数为14的最大,通道数为6的次之,通道数为10的最小。In a certain space cooling channel,the flow and heat transfer characteristics of seven cases with different rib angle,rib-to-subchannel and subchannel number is investigated in Reynold number range of 10000~50000.The results show that the rib have a great influence on subchannel flow structure,which induces the second flow and longitudinal vortex.Because of this,the heat transfer of cooling channel has a remarkable increase,but the flow resistance is also increased sharply.With the decrease of rib angle or the increase of rib-to-subchannel,the flow resistance and heat transfer of channel are both increased.As the subchannel number increases,the heat transfer is also increased.For the flow resistance,the largest is the fourteen subchannel number.The followed is the six subchannel number and the smallest is the ten subchannel number.

关 键 词：交叉肋通道 涡轮冷却 流动换热 阻力损失 

分 类 号：TJ631.2[兵器科学与技术—武器系统与运用工程]