Advance Search
Volume 40 Issue 5
Oct.  2019
Turn off MathJax
Article Contents
Quan Biao, Bian Haozhi, Ding Ming, Luo Hanyu, Zou Zhiqiang, Li Feng, Sun Zhongning. Numerical Analysis on the Characteristics of Steam Condensation in Presence of Air under Vertical Tube Bundle Conditions[J]. Nuclear Power Engineering, 2019, 40(5): 29-34.
Citation: Quan Biao, Bian Haozhi, Ding Ming, Luo Hanyu, Zou Zhiqiang, Li Feng, Sun Zhongning. Numerical Analysis on the Characteristics of Steam Condensation in Presence of Air under Vertical Tube Bundle Conditions[J]. Nuclear Power Engineering, 2019, 40(5): 29-34.

Numerical Analysis on the Characteristics of Steam Condensation in Presence of Air under Vertical Tube Bundle Conditions

  • Publish Date: 2019-10-15
  • Numerical simulations on steam condensation in the presence of air under tube bundle conditions were performed based on the software STAR-CCM+. Calculations were carried out based on a the 3 by 3 tube bundle which has a tube pitch of double diameter, aiming at recognizing local field distributions and thermal-hydraulic characteristics of various tubes. Results indicate that the air layers of various tubes interfere in the tube bundle region, forming a larger high concentration air layer region. On the one hand, this enlarges local velocity and facilitates convective heat transfer; and on the other hand increases the air layer thickness and inhibits condensation heat transfer. On the effect of bundle structure, the concentration, temperature and velocity in the tube bundle region are obviously different from those of the single tube one, sharply decreasing the local heat transfer coefficient by 50% and has a maximum variation of 1.88 times circumferentially. The axial heat transfer property mainly is affected by the development of concentration boundary layer, and circumferential heat transfer property by the adjacent tubes. By analyzing the average heat transfer coefficient, it indicates that compared to the single tube, the maximum reduction of the bundle tube average heat transfer coefficient is 9.06%.
     

     

  • loading
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views (222) PDF downloads(8) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return