| 沥青路面微波现场热再生传热模型 |
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| 引用本文： | 孙铜生,史金飞,朱松青.沥青路面微波现场热再生传热模型[J].东南大学学报,2008,24(1):59-63. |
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| 作者姓名： | 孙铜生 史金飞 朱松青 |
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| 作者单位： | 东南大学机械工程学院，东南大学机械工程学院，东南大学机械工程学院 南京211189，南京211189，南京211189徐州师范大学电气工程学院，徐州221008 |
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| 基金项目： | The Key Project of Science and Technology of Ministry of Education (No.105085),the Specialized Research Fund of Science and Technology Production Translation of Jiangsu Province (No.BA2006068). |
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| 摘 要： | 为了获得沥青路面微波热再生过程的温度分布规律,根据非稳态导热理论建立了加热区域内的二维传热模型,将加热区域外沥青料简化成4个半无限大固体分别建立了一维传热模型.通过加热水负载实验求解了加热沥青料的辐射电场强度.理论推导出了传热边界条件数学模型,并提出了采用实验数据拟合反求边界条件的方法.通过加热实验测出了沥青混合料的温度并拟合出温度场分布,利用Matlab中的偏微分工具箱对传热模型仿真求解,求得的温度场分布和实验结果相当吻合.研究结果证实了该传热模型具有较高的精度,可以直接计算沥青路面热再生过程中的温度分布.
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| 关 键 词： | 沥青路面 微波现场热再生 传热模型 边界条件 辐射电场强度 微波加热实验 |
| 修稿时间： | 2007年9月10日 |
Heat transfer model for microwave hot in-place recycling of asphalt pavements |
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| Sun Tongsheng,Shi Jinfei,Zhu Songqing.Heat transfer model for microwave hot in-place recycling of asphalt pavements[J].Journal of Southeast University(English Edition),2008,24(1):59-63. |
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| Authors: | Sun Tongsheng Shi Jinfei Zhu Songqing |
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| Abstract: | In order to solve for temperature fields in microwave heating for recycling asphalt mixtures,a two-dimensional heat transfer model for the asphalt mixtures within the heating range is built based on the theory of unsteady heat conduction.Four one-dimensional heat transfer models are established for the asphalt mixtures outside the heating range,which are simplified into four half-infinite solids.The intensity of the radiation electric field is calculated through experiment by using heating water loads.It is suggested that the mathematical model of boundary conditions can be established in two ways,which are theoretical deduction and experimental reverse.The actual temperature field is achieved by fitting temperatures of different positions collected in the heating experiment.The simulant temperature field,which is solved with the Matlab PDE toolbox,is in good agreement with the actual temperature field.The results indicate that the proposed models have high precision and can be directly used to calculate the temperature distribution of asphalt pavements. |
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| Keywords: | asphalt pavements microwave hot in-place recycling heat transfer model boundary condition intensity of radiation electric field microwave heating experiment |
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