Development of a Numerical Method to Predict Hydrodynamic Cavitation Induced Erosion

预测水动力空化引起的侵蚀的数值方法的开发

• 批准号: 290858502
• 负责人: Professor Dr.-Ing. Bettar Ould El Moctar
• 金额: --
• 依托单位: Institut für Schiffstechnik, Meerestechnik und Transportsysteme (ISMT)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2020-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/290858502?language=en
• 关键词: Development; Numerical; Method; Predict; Hydrodynamic

The aim of this project is the development of a reliable numerical method for the assessment of hydrodynamic cavitation induced erosion. An Euler-Euler method, as well as an Euler-Lagrange method will be extended by additional terms and equations for bubble dynamics. These methods will be strongly coupled. To reduce the computational effort the coupling algorithm will be applied to a limited part of the computational domain considered as relevant for cavitation induced erosion. An approach to qualitatively predict cavitation erosion has been developed by the authors. The extended erosion model will be improved based on additional flow details, bubble dynamics and bubble transport to better predict the erosion sensitive areas and to estimate erosion rates of different materials. The developed numerical method will be validated based on experimental data from former research projects and from literature. The coupled method will be applied to predict cavitation induced erosion in the maritime field.

该项目的目的是发展一种可靠的数值方法来评估水动力空化引起的侵蚀。欧拉-欧拉方法以及欧拉-拉格朗日方法将通过气泡动力学的附加项和方程进行扩展。这些方法将是强耦合的。为了减少计算量，耦合算法将被应用于与空化侵蚀相关的计算域的有限部分。作者提出了一种定性预测空化侵蚀的方法。扩展的侵蚀模型将基于额外的流动细节、气泡动力学和气泡输运来改进，以更好地预测侵蚀敏感区域和估计不同材料的侵蚀速率。本文将根据以往研究项目的实验数据和文献资料对所开发的数值方法进行验证。该耦合方法将应用于海洋领域的空化侵蚀预测。

项目成果

Simulation of an Internal Nozzle Flow Using an Euler-Lagrange Method

使用欧拉-拉格朗日方法模拟内部喷嘴流动

• DOI: 10.1115/1.861851_ch176
• 发表时间: 2018
• 作者: Andreas Peters;Udo Lantermann;Ould el Moctar
• 通讯作者: Ould el Moctar

Numerical prediction of cavitation erosion on a ship propeller in model- and full-scale

• DOI: 10.1016/j.wear.2018.04.012
• 发表时间: 2018-08-15
• 期刊: WEAR
• 影响因子: 5
• 作者: Peters, Andreas;Lantermann, Udo;el Moctar, Ould
• 通讯作者: el Moctar, Ould