地下滴灌田间管网水力计算数值模拟  

Study on numerical simulation of hydraulic calculation of field pipe network in subsurface drip irrigation

作　　者：李刚[1] 王晓愚[1] 白丹[2] 

机构地区：[1]塔里木大学水利与建筑工程学院,新疆阿拉尔843300 [2]西安理工大学西北水资源与环境生态教育部重点实验室,西安710048

出　　处：《中国农业大学学报》2011年第2期148-154,共7页Journal of China Agricultural University

基　　金：国家自然科学基金资助项目(50979089;50549018);塔里木大学校长基金自然科学项目(TDZKBS1001)

摘　　要：针对目前我国地下滴灌田间管网水力计算和水力特性研究较少,不能满足实际工程计算要求的问题,在前期试验和地下滴灌毛管水力计算数学模型的基础上,采用数值模拟方法,建立了地下滴灌田间管网水力计算数学模型。利用该模型可求解均匀坡、均匀土质、支管与毛管管径不变及均匀出流条件下的地下滴灌田间管网水力特征值。实例计算结果表明,该模型计算偏差小于1/1 000,精度满足实际工程计算要求。At present,few research reports on hydraulic calculation and hydraulic characteristics of field pipe network in subsurface drip irrigation（SDI） can be found in China.While these limited studies could not meet the requirements of engineering design.The mathematical model for hydraulic calculation in SDI filed pipe network was established based on former experiments and mathematical model of hydraulic calculation in SDI laterals.Using the model the hydraulic characteristics values in SDI field pipe network can be numerically solved under various conditions of uniformity slope,homogeneous soil,constant capillary diameter and constant space of submain pipes and laterals.Calculating results of the examples showed that the error s was less than 1/1 000,which is accurate enough to meet the needs of practice.

关 键 词：滴灌 田间管网 水力计算 数值模拟 

分 类 号：S275.4[农业科学—农业水土工程] S275.6[农业科学—农业工程]