摘要
为采用数学模型研究三峡两坝间的通航水流条件,在曲线坐标系与同位网格模式下,利用有限体积法离散水流控制方程,采用S IM PLEC算法与界面动量插值法计算了室内试验与天然河流弯道三维流场,并用实测资料对室内弯道三维水流的计算成果进行了验证分析。结果表明,三维水流数学模型的计算值与实测值基本吻合。计算结果反映了弯道水流特性,弯道环流明显,且表层水流指向凹岸,底层水流指向凸岸。
The flow conditions between the Three Gorges dam and the Gezhouba dam were analyzed by solving the flow equations using a finite volume method in curvilinear coordinates with a collocated grid. The 3-D flow fields in simulated and natural bends were calculated using the SIMPLEC algorithm with momentum interpolation. The 3-D flow field in the simulated bend agrees well with experimental data with the results showing the 3-D flow characteristics in the bend with the secondary flow. The surface velocities point towards the concave bank while the bottom velocities point towards the convex bank.
出处
《清华大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2006年第3期336-340,共5页
Journal of Tsinghua University(Science and Technology)
基金
国家自然科学基金资助项目(50279013
50221903)
关键词
三维水流教学模型
曲线坐标系
同位网格
动量插值
3-D flow numerical modeling
curvilinear coordinates
collocated grid
momentum interpolation
