利用数字图像处理技术测量浓度场的实验研究

来源 :水动力学研究与进展(A辑) | 被引量 : 1次 | 上传用户:TDM
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
利用数字图像处理技术是当前研究环境污染物扩散机理的重要手段。该文通过水槽实验,分析了污染物图像的灰度与污染物的浓度、光源的距离以及排放口所在水深的关系,并建立了污染物浓度与图像灰度关系的方程。利用该方程对射流在横流中测量的图像进行了浓度场计算,得到的结果与实际情况吻合较好,因此,该方法能广泛应用于物质扩散机理的研究。
其他文献
Cambial activity is a prerequisite for secondary growth in plants; however, regulatory factors controlling the activity of the secondary meristem in radial growth remain elusive. Here, we identified I
期刊
High-throughput lipidomic profiling provides a sensitive approach for discovering minor lipid species. By using an advance in electrospray ionization tandem mass spectrometry, a large set of phospholi
期刊
The aim of this work is to investigate the soil water budget across China by means of hydrological modeling under current and future climate conditions and to evaluate the sensitivity to soil paramete
期刊
盐沼湿地生态系统中的土壤质地和淤积深度由于受到潮汐和生物的协同作用会发生相应的变化,将对植物个体生长与湿地植被分布产生影响。本文通过智能温室人工模拟控制土壤质地和淤积深度实验,分析了不同土壤质地(粘土和混合土)及淤积深度(无淤积、淤积植株高度1/4、淤积植株高度1/2及淤积植株高度3/4)对外来克隆植物大米草(Spartina anglica)种群的生长繁殖特征及生物量积累的影响。结果表明:粘土促
期刊
Evaluation of active tectonism by means of geomorphic indices has provided crucial semi-quantitative data for evaluating seismic hazards in a fault zone in a semiarid area of the Zagros Mountains of I
期刊
The results of global and regional studies often show significant disagreement between the Moho depths determined using seismic and isostatic models. In this study, we estimate the differences between
期刊
Nepal was hit by a 7.8 magnitude earthquake on 25~(th) April,2015.The main shock and many large aftershocks generated a large number of coseismic landslips in central Nepal.We have developed a landsli
期刊
To study the characteristics of long period microtremor and applicability of microtremor survey,we have made microtremor observations using long period seismometers of the Chinas mainland from coastal
期刊
This study investigates the contrasting sceneries of community-based tourism after the 2008 Wenchuan earthquake and focuses on the potentials of tourism in transformations towards green economies. How
期刊
在现有航拍图像云检测算法研究的基础上,对航拍图像所获云层数据进行大量统计和分析,提出了一种改进的云检测新方法,即逐步细化的云检测方法.首先基于航拍图像的HSI模型构造云区显著图;再根据亮度和色调,设置最优阈值获得初步云检测结果;之后将另外通过滤波获得的细节图像与初步云检测结果相融合;再通过引导滤波获得最终检测结果.对包含薄云、水域、雪域、半透明云的典型图像进行处理,实验结果表明,与传统算法相比,该
期刊