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气膜孔内颗粒沉积特性的数值模拟研究
ID：304 View Protection：ATTENDEE Updated Time：2024-05-20 09:52:12 Hits：623 Oral Presentation

Start Time：Pending（Asia/Shanghai）

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Abstract
污染物颗粒在燃气涡轮叶片冷却通道内的沉积将影响涡轮叶片的冷却特性和安全役寿命。为了探究气膜冷却通道中微细颗粒的沉积特性，采用EI⁃Batsh沉积模型对气膜孔中微细颗粒沉积情况进行数值仿真，探究了颗粒粒径对气膜孔中的颗粒运动特性及沉积特性的影响。随粒径增大，颗粒在气膜孔中的碰撞反弹增多，小粒径的颗粒随流性好，跟随冷却流沿气膜孔前缘运动，大粒径颗粒的随流性变差，不断碰撞壁面流出气膜孔；随着粒径增加，颗粒的沉积率明显降低，且当粒径大于2.5mm，孔内无沉积；颗粒在单排气膜孔中呈现两端气膜孔沉积较多，中间较少的现象。

 
Keywords
颗粒沉积，EI⁃Batsh沉积模型，斯托克斯数，孔内沉积
Speaker
余江涵
南京航空航天大学

Submission Author
余江涵 南京航空航天大学
孙文静 南京航空航天大学
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Important Date

  • Conference Date

    May 31

    2024

    to

    Jun 03

    2024

  • Jun 03 2024

    Abstract Submission Deadline

  • Jun 03 2024

    Draft paper submission deadline

  • Jun 03 2024

    Registration deadline

Sponsored By
Panel of Computational Mechanics on Granular Materials
Working Party of Computational Mechanics
Chinese Society of Theoretical and Applied Mechanics
Organized By
Hohai University
Dalian University of Technology
Chinese Society of Particuology
Jiangsu Society of Theoretical and Applied Mechanics
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