三周期极小曲面多孔材料渗透率尺度特性研究  

Study on the Scale Characteristics of Permeability of TPMS Porous Materials

作　　者：吴桐 王清辉[1] 徐志佳[1] Wu Tong;Wang Qinghui;Xu Zhijia(School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学机械与汽车工程学院,广东广州510640

出　　处：《系统仿真学报》2022年第5期1015-1024,共10页Journal of System Simulation

基　　金：国家自然科学基金(51775192,51875210);广东省自然科学基金(2018B030311032);广州市科技计划(201804010420);聚合物成型加工工程教育部重点实验室开放课题(KFKT1804);中央高校基本业务费(2019ZD25)。

摘　　要：三周期极小曲面(triply periodic minimal surface,TPMS)在多孔材料设计中的应用日益广泛,但其渗透性能的尺度特性缺乏研究。以4种常用的TPMS单元作为研究对象,在介绍其数学模型及孔隙率控制方法的基础上,建立基于CFD(computational fluid dynamics)的仿真分析模型;对不同孔隙率的TPMS单元和立方多孔结构进行数值仿真分析,明确了其尺度和渗透率之间定量关联规律,即在所选的尺度范围内,各类TPMS单元和立方多孔结构的渗透率是尺度的二次函数。对于TPMS多孔材料渗透性的设计,研究成果可以为TPMS单元类型和尺度的选择提供仿真方法支撑。Triply Periodic Minimal Surface(TPMS)has been widely used in the design of porous materials,however,there is insufficient research on the scale characteristics of permeability.Four commonly used TPMS units are chosen as the research object,based on the introduction of their mathematical models and porosity control methods,a numerical simulation model based on CFD(computational fluid dynamics)is established;TPMS units and cubic porous structures with different porosities are analyzed,the quantitative correlation between their scales and permeability is clarified,i.e.,within the selected scale range,the permeability of various TPMS units and cubic porous structures is the quadratic function of scaled.For the design of the permeability of TPMS porous materials,the research results can provide simulation method to support the selection of TPMS unit type and size.

关 键 词：三周期极小曲面 渗透率 尺度特性 CFD 多孔材料 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]