王治国,屈航,窦益华,王文娟,曹锴.清水与非牛顿胍胶溶液中磨料射流冲蚀行为对比[J].表面技术,2021,50(5):160-167.
WANG Zhi-guo,QU Hang,DOU Yi-hua,WANG Wen-juan,CAO Kai.Comparison of Abrasive Jet Erosion Behavior in Water and Non-Newtonian Hydroxypropylguar Gum Solution[J].Surface Technology,2021,50(5):160-167 |
| 清水与非牛顿胍胶溶液中磨料射流冲蚀行为对比 |
| Comparison of Abrasive Jet Erosion Behavior in Water and Non-Newtonian Hydroxypropylguar Gum Solution |
| 投稿时间：2020-03-16 修订日期：2020-06-15 |
| DOI：10.16490/j.cnki.issn.1001-3660.2021.05.017 |
| 中文关键词: 非牛顿胍胶流体 磨料射流 CFD 喷射式冲蚀实验 冲蚀模型 |
| 英文关键词:non-newtonian hydroxypropylguar gum fluid abrasive jet CFD jet erosion test erosion model |
| 基金项目:国家自然科学基金(52074220);陕西省自然科学基础研究计划(2019JM-268);西安石油大学研究生创新与实践能力培养计划(YCS19213114) |
|
|
| Author | Institution |
| WANG Zhi-guo | School of Mechanical Engineering, Xi'an Shiyou University, Xi'an 710065, China |
| QU Hang | School of Mechanical Engineering, Xi'an Shiyou University, Xi'an 710065, China |
| DOU Yi-hua | School of Mechanical Engineering, Xi'an Shiyou University, Xi'an 710065, China |
| WANG Wen-juan | School of Mechanical Engineering, Xi'an Shiyou University, Xi'an 710065, China |
| CAO Kai | School of Mechanical Engineering, Xi'an Shiyou University, Xi'an 710065, China |
|
| 摘要点击次数: |
| 全文下载次数: |
| 中文摘要: |
| 目的 分析磨料射流在清水和非牛顿胍胶溶液中颗粒运动特性的差异，揭示非牛顿流体中磨料射流颗粒在近壁面的冲蚀行为，为在非牛顿流体中建立磨料射流冲蚀模型提供依据。方法 运用计算流体动力学(CFD)的方法，研究射流过程中清水和胍胶溶液的流场特性，分析流场对高速淹没射流过程中磨料颗粒运动特性的影响，包括撞击壁面的数目、速度和角度的区别。结合喷射式冲蚀实验，将实验结果与不同冲蚀模型预测的结果进行对比，优选出最佳预测模型。结果 胍胶溶液的近壁面(150 μm)湍流动能高于清水，流速小于清水。在近壁面处的高剪切速率区，由于胍胶溶液的剪切稀释性，导致近壁面黏度下降到3.54 mPa.s，而在远离射流冲击中心的区域，最大黏度值可达25.4 mPa.s。在射流冲击中心区域，与清水相比，胍胶溶液中颗粒撞击靶材壁面的数目更少，撞击速度与撞击角度更小。将DNV、Oka和E/CRC Zhang模型的冲蚀预测结果与颗粒在胍胶溶液中的冲蚀实验结果进行了比较，发现DNV模型对冲蚀的预测不足，Oka和E/CRC Zhang模型预测值超过了实验值，而E/CRC Zhang模型的预测结果与实验值最为接近。结论 流体的剪切稀释非牛顿流变性会对射流过程中颗粒的运动产生影响，从而使材料表面出现不同的冲蚀形貌。通过对比不同冲蚀模型的预测值，发现在所涉及的实验工况以及所选择的冲蚀模型范围内，E/CRC Zhang模型是目前研究非牛顿胍胶溶液中固体颗粒冲蚀的首选模型。 |
| 英文摘要: |
| This paper aims to analyze the difference between the particle motion in water and the non-Newtonian hydroxypropylguar gum solution in abrasive jet, reveals the near-wall erosion behavior of abrasive jet particles in non- Newtonian fluid, and provides the basis for the establishment of erosion model in non-Newtonian fluid. The computational fluid dynamics (CFD) method was utilized to study the flow field characteristics of water and hydroxypropylguar gum solution in the process of abrasive jet, and the differences in particle motion characteristics caused by this were analyzed, including the impact number, impact velocity and impact angle of particles on the wall. Combined with jet erosion tests, the experimental data was compared with the prediction results of different erosion models to select the most suitable prediction model. The results show that the turbulent kinetic energy of hydroxypropylguar gum solution near the wall (150 μm off from the wall) was higher than that of water, and the flow velocity near the wall was lower than that of water. In the high shear rate region near the wall, the viscosity of hydroxypropylguar gum solution dropped to 3.54 mPa.s due to shear dilution, while the maximum viscosity reached to 25.4 mPa.s in the region far away from the jet impact center. Compared with water, in the central area of the jet impact, the number of particles in the hydroxypropylguar gum solution hitting the wall of the material was less, and the impact velocity and angle were smaller. The erosion prediction results of DNV, Oka and E/CRC Zhang models were compared with the results of erosion tests of particles in hydroxypropylguar gum solution. DNV model did not predict the erosion sufficiently, while both the Oka and E/CRC Zhang model over-predicted the erosion. The prediction result of the Zhang model is closest to the experimental data. The shear thinning non-Newtonian rheology of fluid could affect the particle movement in the jet process, resulting in different material surface erosion morphologies. By comparing the predicted values of different erosion models, it is shown that within the range of the experimental conditions and the selected erosion model in this study, E/CRC Zhang model is the preferred erosion prediction model for studying the erosion of solid particles in non-Newtonian Hydroxypropylguar gum solution. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
渝公网安备 50010702501715号