基于ZJU400土工离心机的CFD模拟方法  

CFD Simulation Method Based on ZJU400 Geotechnical Centrifuge

作　　者：郭轶楠 杨毅[1,2] 王亚林 余俊祥[1,2] 丁德 GUO Yi-nan;YANG Yi;WANG Ya-lin;YU Jun-xiang;DING De(Architectural Design&Research Institute of Zhejiang University Co.Ltd.,Hangzhou 310028,China;Center for Balanced Architecture,Zhejiang University Hangzhou 310028,China)

机构地区：[1]浙江大学建筑设计研究院有限公司,杭州310028 [2]浙江大学平衡建筑研究中心,杭州310028

出　　处：《装备环境工程》2020年第11期85-89,共5页Equipment Environmental Engineering

摘　　要：目的给出可靠的CFD模拟方法,用于土工离心机风阻功率估算,得到流场及温度场模拟结果。方法针对ZJU400中高速大型土工离心机,利用结构化网格划分使转臂及内壁面处的y+值<30,使其满足湍流模型边界层厚度要求。利用k-omega SST湍流模型和MRF多参考系方法对ZJU400土工离心机进行数值模拟,对模拟所得风阻功率、流场和温度场进行对比验证。结果模拟所得风阻功率与ZJU400实测数据偏差<10%,模拟所得流场与文献[8]中的结果吻合,温度场与实测数据吻合。结论针对ZJU400中高速大型土工离心机的CFD模拟方法取得了精度较高的模拟结果,通过仿真模拟弥补了大型土工离心机实验数据缺乏问题,减少了对实验数据的依赖,为制造设计和研究大型土工离心机提供了CFD模拟方法。The work aims to provide a reliable CFD simulation method for estimating the wind resistance power of geotechnical centrifuge and obtaining the simulation results of flow field and temperature field.Aiming at ZJU400 medium-to-high speed large geotechnical centrifuge,structured grid division was used to ensure the y+value at the tumbler and the inner wall surface less than 30,thus meeting the boundary layer thickness requirement.The k-omega SST turbulence model and multi-reference frames(MRF)were used to simulate the ZJU400 geotechnical centrifuge and comparatively verify the wind resistance power,flow field and temperature field obtained from the simulation.The deviation between the simulated wind resistance power and the measured data of ZJU400 was less than 10%,the simulated flow field was consistent with the results in the literature[8],and the temperature field was consistent with the measured data.CFD simulation method for ZJU400 medium-to-high speed large geotechnical centrifuge achieves high precision simulation results,which makes up for the lack of large geotechnical centrifuge experimental data through simulation and reduces the dependence on experimental data.The CFD simulation method is provided for manufacturing,designing and studying the large geotechnical centrifuge.

关 键 词：土工离心机 CFD数值模拟 风阻功率 K-omega SST湍流模型 流场 温度场 

分 类 号：TU411[建筑科学—岩土工程]