摘要
鉴于糙率的选取是河网数值模拟结果准确与否的关键,以清河某河段为例,采用MIKE 11软件进行一维河网水力计算,对比分析了河道水位实测值与计算值,确定了合理的模型参数及边界条件,进而在保持其他条件不变的情况下,通过改变主河槽糙率值,采用摩尔斯分类筛选法进行糙率局部灵敏度分析,计算得出灵敏度判断因子为1.14,表明糙率在数值模型计算中为高灵敏参数。
Roughness is a key parameter for numerical simulation of river network.Taking river reach of Qinghe River for an example,one-dimensional hydraulic computing of river network is implemented with MIKE 11.The observed water level and simulated level were compared to testify the model parameters and boundary conditions.The sensitivity of Manning＇s nis calculated by Morris qualitative screening method,and the calculated sensitivity factor is 1.14.The result shows that roughness is the high sensitivity parameter in the hydraulic numerical simulation.
出处
《水电能源科学》
北大核心
2014年第11期101-103,共3页
Water Resources and Power
基金
辽宁省科学技术计划项目(2008402027)
关键词
MIKE
11
河道
糙率
灵敏度
MIKE 11
river channel
roughness
sensitivity
