Predicting the material loss around a hole due to sand erosion
Predicting the material loss around a hole due to sand erosion
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预测由于沙子侵蚀而导致孔周围的材料损失
DOI：
10.1016/j.wear.2011.11.005
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Jie Wu
中科院分区：
文献类型：
--
作者：
C. Wong;C. Solnordal;A. Swallow;Steven Wang;L. Graham;Jie Wu
在石油和天然气以及其他加工工业中，需要有确定表面侵蚀速率的准确和通用的方法，并使用它们来预测表面随时间的侵蚀。在这项工作中，结合实验和计算研究已经进行了检查和预测的侵蚀特性上一个简单的平板铝板，与中心孔，这是与硅砂的影响。现有的技术被用来生成非常准确的实验数据，用于计算侵蚀子模型的校准。然后将该子模型纳入计算流体动力学环境中，以预测平板上的侵蚀。有人发现，轮廓发展的海崖表面上可以预测的精度一般远小于30%的标称最大偏差。对更复杂的几何形状的侵蚀只是定性地预测。在计算中考虑腐蚀孕育期的重要性得到了证明，并讨论了改进复杂几何形状腐蚀预测的方法。
In the oil and gas and other process industries it is necessary to have accurate and versatile methods of determining surface erosion rates, and to use them to predict the erosion of surfaces over time. In this work a combined experimental and computational study has been performed to examine and predict the erosion characteristics on a simple flat aluminium plate, with a central hole, that is impacted with silica sand. Existing techniques were employed to generate very accurate experimental data for calibration of a computational erosion sub-model. This sub-model was then incorporated into a computational fluid dynamics environment to predict erosion on the flat plate. It was found that profile development on bluff surfaces could be predicted with accuracy generally much less than a nominal maximum deviation of 30%. Erosion of the more complex aspects of the geometry was only qualitatively predicted. The importance of allowing for the erosion incubation period in calculations is demonstrated, and methods for improving erosion prediction of complex geometries are discussed.