Heat transfer characteristics of pin fin arrays with different solidity degrees

ZHANG Ling; LI Yingdong; WANG Jianlong; DONG Yuhang

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Heat transfer characteristics of pin fin arrays with different solidity degrees

Thermal Power Generation Issue 6, (2017)

更新时间：2025-09-28

- Heat transfer characteristics of pin fin arrays with different solidity degrees
- 作者机构：
  
  东北电力大学能源与动力工程学院,吉林,吉林,132012
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK474.8+11
- Published Online：30 June 2017，
  
  Published：2017
- 稿件说明：
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ZHANG Ling, LI Yingdong, WANG Jianlong, et al. Heat transfer characteristics of pin fin arrays with different solidity degrees[J]. Thermal Power Generation, 2017, (6).
DOI：

ZHANG Ling, LI Yingdong, WANG Jianlong, et al. Heat transfer characteristics of pin fin arrays with different solidity degrees[J]. Thermal Power Generation, 2017, (6). DOI：

摘要

采用剪切压力传输SST k-.湍流模型对3种不同实度扰流柱阵列的换热效果与流动特性进行数值模拟。根据冷却流体的流场结构，分析扰流柱实度对冷却通道内传热性能及压力损失系数的影响规律。结果表明：随着扰流柱阵列实度等级的增加，冷却气体动能降低，其流向速度呈周期性分布，通道内端壁面积缩小，但低温区域所占面积比重明显增大；扰流柱阵列的平均换热水平随进口雷诺数的增大呈指数上升趋势，高实度的扰流柱换热效果更佳，且在流场上下游分别出现换热峰值；冷却通道的整体压力损失系数随进口雷诺数的增大呈指数下降分布，高实度通道下降速率最大，其整体压力损失系数在高雷诺数阶段达到最低，在流向上沿程压力损失系数呈先降后升趋势。

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