基于细观特征的泡沫混凝土导热系数有限元模拟

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发布时间：2020-01-06 00:00:00

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基于细观特征的泡沫混凝土导热系数有限元模拟

Finite Element Simulation on Thermal Conductivity of Foamed Concrete Based on Mesoscopic Characteristics

2022年第6期

泡沫混凝土；细观特征；有限元；周期性边界条件

Foamed concrete; Mesoscopic characteristic; Finite element; Periodic boundary condition

2022年第6期

10.19761/j.1000-4637.2022.06.066.05

西南科技大学博士基金项目（20zx7102）；环境友好能源材料国家重点实验室开放基金项目（19kfhg16）；四川省科技计划项目（2019ZDZX0024）。

蒋俊1，党文婧1，管小军2，石友安3，徐田圆1，吴艳萍2，刘铁2，李睿智3，金超2，李军1，卢忠远1，张魁宝1

1.西南科技大学环境友好能源材料国家重点实验室，四川绵阳 621010；2.宁波建工工程集团有限公司，浙江宁波 315040；3.中国空气动力研究与发展中心，四川绵阳 621000

蒋俊1，党文婧1，管小军2，石友安3，徐田圆1，吴艳萍2，刘铁2，李睿智3，

金超2，李军1，卢忠远1，张魁宝1

蒋俊,党文婧,管小军,等.基于细观特征的泡沫混凝土导热系数有限元模拟[J].混凝土与水泥制品,2022(6):66-70.

JIANG J,DANG W J,GUAN X J,et al.Finite Element Simulation on Thermal Conductivity of Foamed Concrete Based on Mesoscopic Characteristics[J].China Concrete and Cement Products,2022(6):66-70.

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1000

在泡沫混凝土孔结构实测参数的基础上，基于随机算法构建了泡沫混凝土代表性体积单元（RVE）模型，结合voxel网格技术，在周期性边界条件下模拟了泡沫混凝土的传热。结果表明：基于球体随机产生算法构建的RVE模型与泡沫混凝土的实测孔结构特征高度一致，孔径分布平均偏差最高为-2.0%，孔隙率平均偏差为-0.1%；基于voxel网格技术在周期性边界条件下求解出的泡沫混凝土导热系数模拟值与实测值的平均偏差仅为-3.1%，具有良好的可靠性。 Based on the measured pore structure parameters of foamed concrete, the representative volume element (RVE) model of foamed concrete was established based on randomized algorithm. Combined with voxel grid technology, the heat transfer of foamed concrete was simulated under periodic boundary conditions. The results show that the RVE model based on randomized ball generation algorithm is highly consistent with the measured pore structure characteristics of foamed concrete, the maximum average deviation of pore size distribution is -2.0%, and the average deviation of porosity is -0.1%. The average deviation between the simulated and measured values of thermal conductivity of foamed concrete based on voxel grid technology under periodic boundary conditions is only -3.1%, which has good reliability.

英文名 : Finite Element Simulation on Thermal Conductivity of Foamed Concrete Based on Mesoscopic Characteristics

刊期 : 2022年第6期

关键词 : 泡沫混凝土；细观特征；有限元；周期性边界条件

Key words : Foamed concrete; Mesoscopic characteristic; Finite element; Periodic boundary condition

刊期 : 2022年第6期

DOI : 10.19761/j.1000-4637.2022.06.066.05

文章编号 :

基金项目 : 西南科技大学博士基金项目（20zx7102）；环境友好能源材料国家重点实验室开放基金项目（19kfhg16）；四川省科技计划项目（2019ZDZX0024）。

作者 : 蒋俊1，党文婧1，管小军2，石友安3，徐田圆1，吴艳萍2，刘铁2，李睿智3，金超2，李军1，卢忠远1，张魁宝1

单位 : 1.西南科技大学环境友好能源材料国家重点实验室，四川绵阳 621010；2.宁波建工工程集团有限公司，浙江宁波 315040；3.中国空气动力研究与发展中心，四川绵阳 621000

蒋俊1，党文婧1，管小军2，石友安3，徐田圆1，吴艳萍2，刘铁2，李睿智3，

金超2，李军1，卢忠远1，张魁宝1

蒋俊,党文婧,管小军,等.基于细观特征的泡沫混凝土导热系数有限元模拟[J].混凝土与水泥制品,2022(6):66-70.

JIANG J,DANG W J,GUAN X J,et al.Finite Element Simulation on Thermal Conductivity of Foamed Concrete Based on Mesoscopic Characteristics[J].China Concrete and Cement Products,2022(6):66-70.

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摘要

参数

结论

参考文献

引用本文

Based on the measured pore structure parameters of foamed concrete, the representative volume element (RVE) model of foamed concrete was established based on randomized algorithm. Combined with voxel grid technology, the heat transfer of foamed concrete was simulated under periodic boundary conditions. The results show that the RVE model based on randomized ball generation algorithm is highly consistent with the measured pore structure characteristics of foamed concrete, the maximum average deviation of pore size distribution is -2.0%, and the average deviation of porosity is -0.1%. The average deviation between the simulated and measured values of thermal conductivity of foamed concrete based on voxel grid technology under periodic boundary conditions is only -3.1%, which has good reliability.

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基于细观特征的泡沫混凝土导热系数有限元模拟

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