| 沥青路面微波现场热再生传热模型研究 |
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| 引用本文： | 朱松青,史金飞,姜来东,伍斌.沥青路面微波现场热再生传热模型研究[J].公路交通科技,2009,26(2). |
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| 作者姓名： | 朱松青 史金飞 姜来东 伍斌 |
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| 作者单位： | 1. 徐州师范大学,电气工程及自动化学院,江苏,徐州,221116
2. 东南大学,机械工程学院,江苏,南京,211189 |
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| 基金项目： | 江苏省科技成果转化资金资助项目 |
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| 摘 要： | 为了研究沥青路面微波加热再生过程中的温度场分布，根据傅里叶传热学理论建立了二维微波热再生传热数学模型；用角锥喇叭口面场近似辐射场，研究了微波内热源；建立边界条件并进行了归一化处理。基于控制容积的有限差分法（CV-BDM）建立了微分方程的隐式离散格式并进行了数值模拟；选用了工业频率2．45GHz的微波试验系统，采用连续加热工艺和间歇加热工艺，研究在沥青路面内二维温度场中温度随加热时间的变化特性。结果表明微波加热时温度上升是非线性的，在加热初期升温较慢，后期升温较快；沥青混合料内温度分布是不均匀的，其口面中心区域附近温度较高，而边缘处温度较低。当采用间歇加热工艺时，可有效提高沥青混合料受热均匀性。必须合理选择加热时间。数值模拟和试验取得了较好的一致性。
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| 关 键 词： | 道路工程 沥青路面 微波热再生 传热模型 数值模拟 |
Research on Heat Transfer Model of Asphalt Pavements Subjected to Microwave Heating Recycling |
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| ZHU Songqing,SHI Jinfei,JIANG Laidong,WU Bin.Research on Heat Transfer Model of Asphalt Pavements Subjected to Microwave Heating Recycling[J].Journal of Highway and Transportation Research and Development,2009,26(2). |
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| Authors: | ZHU Songqing SHI Jinfei JIANG Laidong WU Bin |
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| Institution: | 1.School of Electrical Engineering & Automation;Xuzhou Normal University;Xuzhou Jiangsu 221116;China;2.School of Mechanical Engineering;Southeast University;Nanjing Jiangsu 211189;China |
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| Abstract: | In order to assess temperature field in microwave heating for recycling asphalt pavements,a 2D mathematic heat transfer model was developed based on Fourier heat transfer theory.The microwave internal heat-generation was researched by using surface field of pyramidal horn replacing approximate radiation field.In addition,the boundary conditions were built and normalization processing was implemented.The control volume based finite differential method(CV-BDM) was used to establish the implicit discrete schem... |
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| Keywords: | road engineering asphalt pavement microwave heating recycling heat transfer model numerical simulation |
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