Research on coupling calculation method of combustion and hydrodynamics for water walls in ultra-supercritical double-reheat boilers

DONG Jiancong; ZHANG Zhongxiao; FAN Haojie; GE Xueli; ZHANG Jian

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Research on coupling calculation method of combustion and hydrodynamics for water walls in ultra-supercritical double-reheat boilers

Thermal Power Generation Issue 7, (2017)

更新时间：2025-09-28

- Research on coupling calculation method of combustion and hydrodynamics for water walls in ultra-supercritical double-reheat boilers
- 作者机构：
  
  上海交通大学热能工程研究所,上海,200240
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK222
- Published Online：02 August 2017，
  
  Published：2017
- 稿件说明：
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DONG Jiancong, ZHANG Zhongxiao, FAN Haojie, et al. Research on coupling calculation method of combustion and hydrodynamics for water walls in ultra-supercritical double-reheat boilers[J]. Thermal Power Generation, 2017, (7).
DOI：

DONG Jiancong, ZHANG Zhongxiao, FAN Haojie, et al. Research on coupling calculation method of combustion and hydrodynamics for water walls in ultra-supercritical double-reheat boilers[J]. Thermal Power Generation, 2017, (7). DOI：

摘要

以某超超临界二次再热机组锅炉为研究对象，采用区域法对炉内空间和水冷壁面进行二维分区建模。将炉内燃烧放热过程与锅内流动换热过程进行耦合，并对其进行合理简化以便于工程化应用，得到了典型负荷工况下，螺旋管圈水冷壁的总体传热特性及壁温分布规律。结果表明：采用分级配风的炉膛，在沿高度方向上壁面热负荷均呈现出“双峰”分布，热负荷峰值接近400 kW/m2；在炉宽方向上，水冷壁热负荷和壁温均呈现出中间高、两端低的抛物线形分布特征，主燃烧区的分布不均匀性要强于燃尽区，这说明炉内壁面热负荷是影响水冷壁管壁温度分布特性的重要因素；BMCR工况下主燃烧区的热流密度峰值可达到479.5 kW/m2，壁温最高达到530.5 ℃。

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