带盖板预旋系统流动与温降特性的数值模拟
DOI:
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

V232.3;

基金项目:

上海航天科技创新基金


Numerical Studies of Flow and Temperature Reduction Characteristics a Cover-Plate Pre-Swirl System
Author:
Affiliation:

Fund Project:

SAST2018-017

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    为了研究带盖板预旋系统的流动与温降特性,对不同喷嘴角度和不同转速(工况)下的预旋结构模型进行了数值模拟。在相同进气条件下,研究了有无预旋结构和不同喷嘴角度下的盘腔流动与温降特性,分析了旋转雷诺数对系统流动情况和温降效果的影响。结果表明:预旋结构在盖板腔内产生的漩涡增强了盘腔的流动,相比于无预旋结构,其盖板腔压力和系统出口总温明显降低;随着喷嘴角度的增大,盘腔总温和静压均增大,温降效果变差;随着旋转雷系诺数的增大,无量纲质量流量增大,无量纲温降和总压损失系数均减小;预旋角由50°减少到30°时,系统无量纲温降增加了23.7%。

    Abstract:

    To investigate the flow and temperature reduction characteristics in a cover-plate pre-swirl system, a numerical simulation of the modle with different nozzle angles and different rotational speeds pre-swirl structure. Under the same intake conditions,the disk cavity flow and temperature reduction characteristics of pre-swirl system and vertical intake structure and different pre-swirl angles were studied, the influence of system flow and temperature reduction effect was carried out by rotational Reynolds number. The results show that the vortex generated by the pre-swirl structure in the cover cavity enhances the flow of the disk cavity, compared with the non-pre-swirl structure, the cover cavity pressure and the total outlet temperature are significantly reduced. As the nozzle angles increase,the total temperature and static pressure of the disk cavity increase, and the temperature reduction effect is reduced. With the increase of the rotational Reynolds number,the dimensionless mass flow rate increase, and the dimensionless temperature drop and total pressure loss coefficient decrease. When the pre-swirl angle is reduced from 50°to 30°, the dimensionless temperature drop increase by 23.7%.

    参考文献
    相似文献
    引证文献
引用本文

彭鸿博,刘志宏,刘聪,等. 带盖板预旋系统流动与温降特性的数值模拟[J]. 科学技术与工程, 2020, 20(35): 14723-14729.
penghongbo. Numerical Studies of Flow and Temperature Reduction Characteristics a Cover-Plate Pre-Swirl System[J]. Science Technology and Engineering,2020,20(35):14723-14729.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2019-11-02
  • 最后修改日期:2020-08-14
  • 录用日期:2020-06-13
  • 在线发布日期: 2021-01-06
  • 出版日期:
×
律回春渐,新元肇启|《科学技术与工程》编辑部恭祝新岁!
亟待确认版面费归属稿件,敬请作者关注