Numerical Modeling of Liquid Droplet Impingement Erosion Considering of Condensation/Liquid Film/Splash and Application for Low Pressure Turbine

考虑凝结/液膜/飞溅的液滴冲击侵蚀数值模拟及其在低压汽轮机上的应用

• 批准号: 24760142
• 负责人: SUZUKI Masaya
• 金额: $ 2.83万
• 依托单位: Japan Aerospace Exploration Agency
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2012
• 资助国家: 日本
• 起止时间: 2012-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-24760142/
• 关键词: エロージョン; 数値シミュレーション; 流体工学; 数値流体力学; 連成問題; 混相流; 流体機械; タービン; 気液二相流

A Model of liquid droplet impingement erosion (LDIE) was developed based on previous model of erosion. The developed model was implemented. If the erosion phenomenon requires a long time, and the time scale is much longer than that of the two-phase flow, the changes in the two-phase flow and the wall shape can be treated by weak coupling. LDIE simulation required droplet impingement velocity and position, and so Euler-Lagrange coupling was selected.Condensation was considered to obtain position and diameter of droplets. Liquid film and splash are important for LDI erosion process, the modeling becomes complex. The present model was developed considering not only velocity, angle, and material parameter but also liquid film and splash.The developed procedure was validated by comparing experimental data of bend. Based on the validation, LDIE in a low pressure turbine was simulated, and the present results showed good agreement with experimental data.

液滴撞击侵蚀（LDIE）模型是在之前的侵蚀模型的基础上开发的。开发的模型已得到实施。如果侵蚀现象需要较长时间，且时间尺度比两相流长得多，则可以采用弱耦合来处理两相流和壁面形状的变化。 LDIE模拟需要液滴撞击速度和位置，因此选择Euler-Lagrange耦合。考虑凝聚来获得液滴的位置和直径。液膜和飞溅对于LDI侵蚀过程很重要，建模变得复杂。本模型的开发不仅考虑了速度、角度和材料参数，还考虑了液膜和飞溅。通过比较弯曲的实验数据对开发的程序进行了验证。在此基础上，对低压汽轮机中的LDIE进行了仿真，结果与实验数据吻合良好。

项目成果

Otsuka, H. and Murooka, T. : Numerical Simulation of Ice Accretion Phenomena on Spinner of Jet Engine

Otsuka, H. 和 Murooka, T.：喷气发动机旋转器积冰现象的数值模拟

• 发表时间: 2012
• 作者: Matsuura;T.;Suzuki;M.;Yamamoto;M.;Mizuta;I.
• 通讯作者: I.

スプラッシュ・バウンドを考慮した着氷現象計算法の開発

考虑飞溅弹跳的结冰现象计算方法的开发

• 发表时间: 2012
• 作者: Fujita;K.;Suzuki;M. and Yamamoto;M.;磯部敬介,鈴木正也,山本誠
• 通讯作者: 磯部敬介,鈴木正也,山本誠

Numerical Simulation of Particulate Erosion in Two-Stage Compressor

两级压气机颗粒侵蚀的数值模拟

• 发表时间: 2012
• 作者: Suzuki;M. and Yamamoto;M.
• 通讯作者: M.

Development of Numerical Procedure on Ice Accretion Phenomena Considering Splash and Bound

考虑飞溅和束缚的积冰现象数值程序的发展

• 发表时间: 2012
• 作者: Isobe;K.;Suzuki;M. and Yamamoto;M.
• 通讯作者: M.

Multi Physics Simulation of Liquid Droplet Impingement Erosion

液滴冲击侵蚀的多物理场模拟

• 发表时间: 2012
• 作者: Fujita;K.;Suzuki;M. and Yamamoto;M.
• 通讯作者: M.