摘要
本文介绍的二维非恒定流数值模型,采用无结构不规则网格,充分考虑了分蓄洪区内影响洪水演进的各种主要因素。通过1954年荆江分洪区实测分洪过程的模拟验证,表明模型不仅计算精度显著提高,计算速度也大为加快,达到了为分洪调度指挥服务的要求,具有较强的实用性。
This paper presents a numerical model for 2-D unsteady flow with unstructured and irregu- lar grids.All main factors that influnce flood routing in large detention basin have been taken in- to account.Comparing the numerical simulation results with the observed data in jingjiang re- tarding basin in 1954.it is proved that the model not only has been improved with its accuracy. but also has higher speed,which can satisfy the need for flood forecasting.
出处
《自然灾害学报》
CSCD
1996年第1期34-40,共7页
Journal of Natural Disasters
基金
本文为"八五"国家重点科技攻关课题之一
关键词
洪水
减灾措施
蓄洪区
数值模拟
分洪区
Flood
Disaster mitigation measures
Detention basin
Numerical model
