摘要
高寒地区弯道河流常受到上游流凌的碰撞破坏和冲刷磨损,因此选择合适的护岸建筑物布置形式至关重要。丁坝布置在岸边可作为护岸建筑物防治岸坡受到流凌的冲击。基于STAR-CCM+平台,采用RNG模型,运用VOF方法,结合离散单元模型,对弯道中的流凌运动进行数值模拟与详细地分析,并将数值模拟与水槽试验中流凌运动现象进行对比,研究结果表明:该模型可以有效的模拟流凌在水流中的运动,对不同丁坝尺寸不同丁坝布置形式下流凌的运动情况进行了分析,发现双丁坝布置形式对于防止冰凌对护岸的碰撞有更好的效果,位置过近的双丁坝布置形式不如位置稍远的丁坝布置形式效果好。同时,不同工况的现象与分析可以给实际工程中丁坝的布置以参考性建议。
A curved river in the alpine region is often destroyed by collision and worn by scouring caused by the upstream flowing ice, so it is important to choose an appropriate arrangement of revetment building. As the revetment building, spur dike can be arranged on the river bank to prevent the shore slope from being impacted by flowing ice. Numerical simulation and detailed analysis were carried out for the motion of flowing ice in curved river on basis of STAR-CCM＋ platform, by using RNG model, the volume of fluid（VOF） method and in combination with discrete element model. In addition, the calculation results of numerical simulation were compared with the motion of flowing ice in sink experiment. The results show that this model can effectively simulate the flowing ice in the water movement. The description and analysis of the movement of flowing ice with different sizes of spur dikes and different arrangements were carried out, it was found that the arrangement of double spur dike has a better effect on prevention of flowing ice from colliding against the bank. The double spur dike with a small interval is worse than the double spur dike with a large interval. In the meanwhile, the phenomenon and analysis under different working conditions can give reference to the arrangement of the spur dike in the actual project.
出处
《应用科技》
CAS
2018年第1期33-38,46,共7页
Applied Science and Technology
基金
黑龙江省重大科技招标项目(GA14A501)
关键词
流凌
丁坝
离散元
弯道水流
数值模拟
STAR-CCM+VOF
护岸建筑物
flowing ice
spur dike
discrete element
curved river
numerical simulation
STAR-CCM＋
VOF
revetment buildingsrevetment buildings
