| 沉积物-水界面通量测定中热脉冲信号分析(英文) |
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| 引用本文： | 朱腾义,RajendraPrasadSingh,傅大放.沉积物-水界面通量测定中热脉冲信号分析(英文)[J].东南大学学报,2014(2):192-196. |
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| 作者姓名： | 朱腾义 RajendraPrasadSingh 傅大放 |
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| 作者单位： | 东南大学土木工程学院,南京210096 |
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| 基金项目： | The Priority Academic Program Development of Jiangsu Higher Education Institutions. |
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| 摘 要： | 分析了热脉冲传感器脉冲信号与沉积物-水界面通量之间的传热问题,并通过优化程序,提出了用热脉冲测定计算界面通量J的新方法.此分析方法只需3个实验参数,即x0,λ和(pc)l就可利用热脉冲测定数据计算出沉积物-水界面通量J.数据分析结果表明:热脉冲顶点温度到达时间与水流速度呈曲线关系;沉积物-水界面通量和热源上下游温升比值的自然对数之间存在一种简单的线性关系.这种简单的线性关系,有利于热脉冲型传感器在土壤-水界面通量测定中的广泛应用.
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| 关 键 词： | 沉积物-水界面通量 渗流仪 热脉冲 顶点温度到达时间 |
Analysis of heat pulse signals determination for sediment-water interface fluxes |
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| Zhu Tengyi,Rajendra Prasad,Singh Fu Dafang.Analysis of heat pulse signals determination for sediment-water interface fluxes[J].Journal of Southeast University(English Edition),2014(2):192-196. |
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| Authors: | Zhu Tengyi Rajendra Prasad Singh Fu Dafang |
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| Institution: | (School of Civil Engineering, Southeast University, Nanjing 210096, China) |
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| Abstract: | The heat pulse signal is analyzed in a new way with the goals of clarifying the relationships between the variables in the heat transfer problem and simplifying the procedure for calculating sediment-water interface fluxes J. Only three parameters x0 λand pc l are needed to calculate J by the heat pulse data for this analysis method.The results show that there is a curvilinear relationship between the peak temperature arrival time and sediment-water interface fluxes and there exists a simple linear relationship between sediment-water interface fluxes and the natural log of the ratio of the temperature increase downstream from the line heat source to the temperature increase upstream from the heat source.The simplicity of this relationship makes the heat pulse sensors an attractive option for measuring soil water fluxes. |
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| Keywords: | sediment-water interface flux seepage meter heat pulse peak arrival time |
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