一维流三维水动力弥散测定仪的研制  

Measurement Instrument Development of 3-D Dynamical Dispersion of 1-D Flow

作　　者：彭浩[1] 马传明[1] 王志强[1] 鲁涛涛[1] 和泽康[1] 

机构地区：[1]中国地质大学环境学院,武汉430074

出　　处：《安全与环境工程》2013年第1期85-88,共4页Safety and Environmental Engineering

基　　金：国家自然科学基金项目(40802057);2009年中国地质大学(武汉)实验技术研究项目(SJ-200914)

摘　　要：针对目前传统的室内一维、二维测定装置不能完全反映污染物运移过程中的空间特征,设计了一种能测定三维水动力弥散的试验装置。该装置结合平面二维和剖面二维的测定,可以综合反映水动力弥散系数在三维空间的变化规律。通过试验数据显示:平面和剖面上的纵向水动力弥散系数都在0.02左右,平面上的横向水动力弥散系数小于纵向水动力弥散系数3倍左右,而剖面上的横向水动力弥散系数小于纵向水动力弥散系数数十倍;另外,通过分析一维流三维水动力弥散的特征,对试验的效果进行了评价,结果表明该试验装置具有较高的准确性和精度。As the traditional one or two dimensional measuring device, which is commonly used in indoor experiments at present, cannot completely reflect the spatial distribution characteristics of solute transport, a device which is able to measure three-dimensional dynamical dispersion is designed. The new device can comprehensively reflect the change regularity of dispersion coefficient in three dimensions in combination with flat two-dimensional determination and section two dimensional determination. The experiment data indicate that the longitudinal dispersion coefficient in section and flat is about 0.02, the lateral dispersion coefficient is three times less than the longitudinal dispersion coefficient in flat, while the lateral dispersion coefficient is dozens of times less than the longitudinal dispersion coefficient in section. The characteristics analysis of the three-dimensional dynamical dispersion and the effect evaluation of the experiment show that the device has high accuracy and precision.

关 键 词：三维水动力弥散 水动力弥散系数 仪器设计 

分 类 号：X853[环境科学与工程—环境工程] P64[天文地球—地质矿产勘探]