含悬浮颗粒油液中粘度的影响分析

发布时间：2018-06-29 13:16

本文选题：油液粘度 + 悬浮颗粒　；参考：《应用力学学报》2017年03期

【摘要】：油液中所含颗粒物不利于设备的安全运行。根据油液中颗粒物尺寸较小、较稀的特性,利用悬浮流的理论建立了含悬浮颗粒油液的混合物模型,通过特征线法数值求解,并与SRC实验数据比较,验证了所建模型的有效性;利用该模型对不同油液粘度的悬浮流中各相的动态特征进行了分析。结果表明:油液的速度、压力的跃变幅值随着粘度的增大呈现较微弱的增大,悬浮颗粒的速度和浓度则随着粘度的增大而增大;悬浮流中各相发生跃变的时刻在管路的不同区段而不同,在管路的始端、中段、末端分别为T/4(T为脉动周期)的奇数倍、T/8的奇数倍、T/4的偶数倍时刻;悬浮颗粒对油液具有较好的跟随性,颗粒的速度和浓度分布分别受到油液速度和压力的影响。
[Abstract]:The particulates contained in the oil are not conducive to the safe operation of the equipment. According to the small size and dilute characteristics of particles in oil, the model of mixture containing suspended particles is established by using the theory of suspended flow. The numerical solution is solved by the characteristic line method, and compared with the experimental data of SRC, the validity of the model is verified. The dynamic characteristics of each phase in suspension flow with different oil viscosity were analyzed by using this model. The results show that the oil velocity and pressure amplitude increase weakly with the increase of viscosity, while the velocity and concentration of suspended particles increase with the increase of viscosity. The jumping time of each phase in the suspension flow is different in different sections of the pipeline. In the beginning, middle and end of the pipeline are the odd times of T / 4 (T / 8) and the odd times of T / 8 and the even times of T / 4, respectively, at the beginning, the middle and the end of the pipeline are the odd number times of T / 4 (T / 8) and the time of even number of T / 4, respectively. The suspended particles have good following performance to the oil, and the velocity and concentration distribution of the particles are affected by the oil velocity and pressure, respectively.
【作者单位】：重庆工商大学废油资源化技术与装备工程研究中心;
【基金】：国家自然科学基金(51375516) 重庆基础与前沿研究项目(cstc2016jcyj A0185)
【分类号】：O35

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