Numerical simulation on complete evaporation of wet steam

DU Lipeng; ZHANG Wenchao

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Numerical simulation on complete evaporation of wet steam

Thermal Power Generation Vol. 44, Issue 7, Pages: 34-39(2015)

更新时间：2025-09-28

- Numerical simulation on complete evaporation of wet steam
- 作者机构：
  
  东北电力大学能源与动力工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK12
- Published：2015
- 稿件说明：
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DU Lipeng, ZHANG Wenchao. Numerical simulation on complete evaporation of wet steam[J]. Thermal Power Generation, 2015, 44(7): 34-39.
DOI：

DU Lipeng, ZHANG Wenchao. Numerical simulation on complete evaporation of wet steam[J]. Thermal Power Generation, 2015, 44(7): 34-39. DOI：

摘要

为了分析影响湿蒸汽完全汽化的因素及其影响机理

将湿蒸汽中的液滴简化为球形颗粒

采用Schiller Naumann模型对相间作用力进行计算

以标准k-ε模型作为湍流模型

采用加强壁面函数法进行壁面处理

研究分析湿蒸汽完全汽化长度与加热功率、液滴平均直径、蒸汽湿度和蒸汽流速等因素的关系。结果表明:湿蒸汽完全汽化长度与加热功率呈反比线性关系;液滴直径越大

其分布越不均匀

湿蒸汽汽化长度越长

其完全汽化长度与液滴直径呈正比线性关系;蒸汽湿度越大

其汽化长度越长

其完全汽化长度与蒸汽湿度呈正比线性关系;管道入口流速越大

液滴分布越不均匀

汽化段长度越长

其完全汽化长度与管道入口流速呈正比线性关系。

Abstract

To investigate the factors affecting complete evaporation of wet steam and describe the influencing mechanism

the liquid droplets were simplified as spherical particles

and the Schiller Naumann model was applied to calculate the force between phases.Combining with the strengthened wall function

the standard k-ε model was employed as the turbulence model to analyze the relationship between complete vaporization length and factors like the heating power

average droplet diameter

steam humidity

wet steam velocity and others.The result shows that

the complete steam vaporization length is inversely proportional to the heating power

while it increases linearly with other three factors.

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