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.

在已有冲蚀模型的基础上，建立了液滴冲蚀模型。所开发的模型已经实施。如果侵蚀现象需要较长的时间，并且时间尺度比两相流的时间尺度长得多，则可以通过弱耦合来处理两相流和壁面形状的变化。LDIE模拟需要计算液滴撞击速度和位置，因此选择欧拉-拉格朗日耦合，考虑凝结作用，得到液滴的位置和直径。液膜和飞溅是LDI冲蚀过程的重要组成部分，建模较为复杂。该模型不仅考虑了速度、角度和材料参数，还考虑了液膜和飞溅的影响，并通过与弯曲试验数据的对比验证了模型的正确性。在验证的基础上，对低压涡轮机的LDIE进行了模拟，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.