Numerical Simulation of Heat Transfer Characteristics in Jet-based Cooling Channel for the First Wall of Nuclear Fusion

WANG Yinan; ZENG Tianbao; ZHENG Zhiying; CAI Weihua; LI Fengchen

doi:10.19805/j.cnki.jcspe.2025.240567

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Numerical Simulation of Heat Transfer Characteristics in Jet-based Cooling Channel for the First Wall of Nuclear Fusion

更新时间：2026-10-10

- Numerical Simulation of Heat Transfer Characteristics in Jet-based Cooling Channel for the First Wall of Nuclear Fusion
- Chinese Journal of Power Engineering Vol. 45, Issue 11, Pages: 1824-1832(2025)
- 作者机构：
  
  1. 哈尔滨工业大学能源科学与工程学院,黑龙江,哈尔滨,150001
  2. 东北电力大学能源与动力工程学院,吉林,吉林,132012
  3. 天津大学机械工程学院,天津,300350
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2025.240567
  CLC：
- Online First：17 November 2025，
  
  Published：17 November 2025
- 稿件说明：
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王忆楠,曾添宝,郑智颖,蔡伟华,李凤臣. 核聚变第一壁射流冷却通道换热特性数值模拟动力工程学报, 2025, 45(11): 1824-1832 https://doi.

org/10.19805/j.cnki.jcspe.2025.240567
王忆楠,曾添宝,郑智颖,蔡伟华,李凤臣. 核聚变第一壁射流冷却通道换热特性数值模拟动力工程学报, 2025, 45(11): 1824-1832 https://doi. DOI： 10.19805/j.cnki.jcspe.2025.240567.

org/10.19805/j.cnki.jcspe.2025.240567 DOI：

摘要

设计了一种基于射流的新型核聚变第一壁内部冷却通道

初步探究了运行参数和结构参数对射流冷却通道流动和换热特性的影响

并在相同运行参数下将射流冷却通道的换热特性与原型直通道进行了对比

通过分析努塞尔数

、流动阻力系数

以及综合性能评价指标(

PEC

)衡量了射流冷却通道的冷却性能。结果表明:相比于原型直通道

在相同的运行参数下采用射流冷却通道时第一壁受热面的平均温度降低了182 K

提升了132%;冷却剂的质量流量增大

射流冷却通道的

Nu和f

均增大

冷却性能增强

改变受热面的热流密度不会影响其换热特性和

;在所考虑的结构参数范围内

增大射流通道直径和横向间距、减小射流通道渐缩比和纵向间距以及射流通道采用平行排布可使射流冷却通道具有最佳的冷却性能。

Abstract

A new type of internal cooling channel for the first wall of nuclear fusion based on jet flow was designed. The effects of operating and structural parameters on the flow and heat transfer characteristics of the jet cooling channel were preliminarily explored. The heat transfer characteristics of the jet cooling channel were compared with the prototype straight channel under the same operating parameters. The cooling performance of the jet cooling channel was measured by analyzing the Nusselt number

flow resistance coefficient

and comprehensive performance evaluation index

PEC

. Results show that compared to the prototype straight channel

the

average temperature of the first wall heating surface is reduced by 182 K

and

is improved by 132% using a jet cooling channel under the same operating parameters. As the mass flow rate of the coolant increases

and

of the jet cooling channel both increase

enhancing the cooling performance. Changing the heat flux density of the heating surface will not affect its heat transfer characteristics and

. Within the considered structural parameter range

increasing the diameter and lateral spacing of the jet channel

reducing the taper ratio and longitudinal spacing of the jet channel

and using parallel arrangement of the jet channel can make the jet cooling channel have the best cooling performance.

关键词

Keywords

references

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