Experimental and numerical investigation on particulate deposition phenomena due to solid particle ingestion in high pressure turbine

2019 Fiscal Year Final Research Report

• Project/Area Number: 16H06067
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Fluid engineering
• Research Institution: Japan Aerospace EXploration Agency
• Principal Investigator: Suzuki Masaya 国立研究開発法人宇宙航空研究開発機構, 航空技術部門, 主任研究開発員 (40548161)
• Project Period (FY): 2016-04-01 – 2020-03-31
• Keywords: デポジション / エロージョン / マルチフィジックス / 固気二相流 / ジェットエンジン / タービン / 実験流体力学 / 数値流体力学

Outline of Final Research Achievements

Experimental and numerical methods for particle deposition in high-pressure turbines were developed. Using these methods, the deposition phenomena due to high-temperature and high-speed impingements were clarified.
In the experiments, a burner rig with kerosene as a fuel and compressed air as an oxidant was applied to make the particles collide with materials. The influences on the deposition and erosion phenomena of the velocity, angle, and temperature, which are dominant parameters, were investigated.
The deposition models were implemented in a computational fluid dynamics solver, UPACS, developed by JAXA. The numerical simulations of deposition on the stator vane in the first stage of the high-pressure turbine were conducted. The deposition pattern on the turbine vane was revealed. The effects of the particle diameter and vane surface temperature on the deposition were focused, and the surface temperature distribution, which is adequate for anti-deposition, was investigated.

Free Research Field

流体工学

Academic Significance and Societal Importance of the Research Achievements

これまでほとんど明らかにされてこなかった高温高速条件における粒子付着の物理現象の解明，それを再現する試験・解析手法の構築がなされた．これにより，高圧タービンの設計・開発・メンテナンスに多大な貢献ができると考える．