DSMC numerical simulation of Taylor-Couette flows
-
摘要: 使用圆柱坐标系网格的三维DSMC(Direct Simulation Monte Carlo)模型,对同轴圆柱间Taylor-Couette流中Taylor涡的形成进行了数值模拟,并分析了不同计算域和边界条件下稳定流场中Taylor涡的轴向排列结构.在网格设置和流场参数不变的情况下,使用轴对称DSMC模型对Taylor涡进行数值模拟,所得Taylor涡的稳定过程与三维结果一致,验证了使用三维DSMC方法来解决微尺度低速的稀薄气流问题的可行性.三维模拟结果表明Taylor涡以较大的圆周速度绕轴旋转,二维模拟则无法体现.对不同的内圆柱旋转速度进行数值模拟,确定了能够产生Taylor涡的临界速度值.Abstract: Taylor vortices in Taylor-Couette flow between two coaxial cylinders were simulated numerically using 3D direct simulation Monte Carlo(DSMC) model with grids in cylindrical coordinates. The axial vortices structure in stable flow was investigated for different computation domains under different boundary conditions. Axisymmetric DSMC model was also used to simulate the Taylor vortices with the same grid and the same flow field parameters. The results accord well with the 3D results, validating that it-s feasible to simulate micro-scale and low-speed rarefied gas flows by 3D DSMC method. The 3D results show that Taylor vortices rotate around the axis in a great circumferential speed, which could not be acquired in axisymmetric results. The critical value of rotational speed of inner cylinder at which Taylor vortices could be generated was figured out by several simulations.
-
Key words:
- Taylor vortices /
- direct simulation Monte Carlo(DSMC) /
- 3D /
- axial vortices structure
-
[1] 袁艳平.Taylor-Couette流与旋转圆柱轴间流体膜润滑与密封[J].润滑与密封,2006,9:192-196 Yuan Yanping.Taylor-Couette flow and lubrication or seal by hydro-membrane between the rotating cylinders[J].Lubrication Engineering,2006,9:192-196 (in Chinese) [2] Bird G A.Molecular gas dynamics and the direct simulation of gas flows[M].New York: Oxford Science Publications,1994 [3] Riechelmann D,Nanbu K.Monte Carlo direct simulation of the Taylor instability in rarefied gas[J].Phys Fluids A,1993,5: 2585-2587 [4] Stefanov S,Cercignani C.Monte Carlo simulation of the Taylor-Couette flow of a rarefied gas[J].J Fluid Mech,1993,256:199-211 [5] Kuhlthau A R .Recent low-density experiments using rotating cylinder techniques // In Proceedings of the First International Symposium on Rarified Gas Dynamics.Pergamon,London: ,1960:192-200 [6] William W L.DSMC simulations of forced chaotic flows .AIAA-2003-3595,2003 [7] William W L.Navier-Stokes and DSMC simulations of forced chaotic microflows .2003-3583,2003 [8] Bird G A.Molecular gas dynamics[M].New York:Oxford Science Publications,1976 [9] Nanbu K,Watanabe Y,Igarashi S.Conservation of angular momentum in the direct simulation Monte Carlo method[J].J Phys Soc of Japan,1988,57:2877-2880 [10] Bird G A.Direct simulation of high-vorticity gas flows[J].Phys Fluids,1987,30:364-366 [11] 尹协远,孙德军.旋涡流动的稳定性[M].北京:国防工业出版社,2003 Yin Xieyuan,Sun Dejun.Stability of vortices flow[M].Beijing: National Defence Industry Press,2003 (in Chinese) 期刊类型引用(8)
1. 陈山，吴丽莎，张凯，程轶红，程亚萍，冯驰. 基于LoRa通信的大规模用电信息采集与传输系统设计. 自动化技术与应用. 2024(10): 153-157 . 
百度学术2. 肖萍，刘荆欣，王妍，臧洁. 一种视频多模态数据自适应采集策略. 小型微型计算机系统. 2023(02): 383-391 . 百度学术3. 刘烈君. 基于模糊自适应算法的无线视频多路径同步传输方法. 哈尔滨商业大学学报(自然科学版). 2022(01): 35-41 . 百度学术4. 孙璇. VR全景视频渲染输出安全性自动评价模型. 自动化技术与应用. 2022(06): 86-90 . 百度学术5. 徐积文，张永棠. 实时游戏中网络延迟对体验质量的影响. 中国测试. 2021(03): 150-158 . 百度学术6. 张帅，厉向东，卢国英. 基于三维虚拟VR技术的产品设计系统研究. 现代电子技术. 2021(14): 119-123 . 百度学术7. 李敏. 基于TCP协议的音频流媒体QoE的定量研究. 电声技术. 2020(05): 72-73 . 百度学术8. 赵雪彤. 多媒体网络中差异化视频信息分类传递技术. 计算机仿真. 2020(11): 189-193 . 百度学术其他类型引用(7)
-
百度学术
点击查看大图
计量
- 文章访问数: 3554
- HTML全文浏览量: 129
- PDF下载量: 1619
- 被引次数: 15
下载:
