东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2010, Vol. 31 ›› Issue (3): 398-401.DOI: -

• 论著 • 上一篇    下一篇

蒸汽喷射器的CFD数值模拟及其性能

张琦;霍杰鹏;王汝武;王园;   

  1. 东北大学材料与冶金学院;华南理工大学化学与化工学院;沈阳飞鸿达节能设备有限公司;
  • 收稿日期:2013-06-20 修回日期:2013-06-20 发布日期:2013-06-20
  • 通讯作者: -
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2008AA042901,2009AA05Z215)

CFD-based numerical simulation of steam ejector and its performance

Zhang, Qi (1); Huo, Jie-Peng (1); Wang, Ru-Wu (3); Wang, Yuan (3)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China; (2) School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China; (3) Shenyang Feihongda Energy Conservation Equipment Technology Development Co., Ltd., Shenyang 110015, China
  • Received:2013-06-20 Revised:2013-06-20 Published:2013-06-20
  • Contact: Zhang, Q.
  • About author:-
  • Supported by:
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摘要： 根据喷射器的结构特点,建立了蒸汽喷射器二维CFD模型,研究了工作参数(工作流体压力、引射流体压力和混合流体压力)和结构参数(混合室收缩段长度、等截面混合室长度和直径、扩压室长度和工作喷嘴结构等)对蒸汽喷射器性能的影响.研究表明:①等截面混合室长度和直径、工作喷嘴喉部直径以及喉管面积比φ存在使喷射系数达到最大的最佳值;②CFD不仅是预测喷射器性能的有力工具,而且使人们更加清晰地了解喷射器内流动和混合过程.

关键词: 蒸汽喷射器, 性能, 数值模拟, CFD, 节能

Abstract: Based on the construction of an ejector, a 2-D CFD model of the steam ejector was developed to investigate the influence of its operating parameters including operating, driving and mixed fluid pressures and constructional parameters including the length of contraction section of mixing chamber, length and diameter of second throat, length of diffusion chamber and construction of primary nozzle on the performance of a steam ejector. Simulation results indicated that the optimal or maximum jet coefficient depends on the length and diameter of second throat, diameter of primary nozzle throat and the area ratio of primary throat to nozzle throat (φ). CFD is thus proved a powerful tool to predict the properties of ejector and, what's more, it can be used to make sure of the flowing/mixing process of the fluid in ejector.

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