持续时间下路堑内风致积雪数值模拟研究  

NUMERICAL SIMULATION OF WIND-INDUCED SNOW ACCUMULATION IN ROAD CUTTINGS OVER TIME

作　　者：白宇 李方慧[1] 尚靖淳 于世龙 刘端宣 赵方锐 BAI Yu;LI Fanghui;SHANG Jingchun;YU Shilong;LIU Duanxuan;ZHAO Fangrui(School of Civil Engineering,Heilongjiang University,Harbin 150086,China)

机构地区：[1]黑龙江大学建筑工程学院,哈尔滨150086

出　　处：《低温建筑技术》2024年第9期137-141,共5页Low Temperature Architecture Technology

摘　　要：路堑是风吹雪灾害最为严重的路基形式之一,为给实际道路断面设计和风吹雪灾害的防治提供参考依据,文中针对交通线路中常见的路堑展开研究,基于Fluent中的Mixture模型对风雪两相流进行模拟,同时对模拟结果进行验证。研究路堑风吹雪灾害中的积雪分布规律,并对积雪分布演化过程中的流场进行比较分析。结果发现路堑下风坡位置形成局部突出积雪与路堑内产生漩涡再附点有直接关系。不同时刻路堑内雪相浓度受积雪量增加和风速流场变化的影响,其值整体上增加,且雪相浓度最大值在上风坡坡顶附近出现,研究可为路堑内积雪灾害预测以及风吹雪两相流数值模拟参数取值提供参考。Cut slopes are among the most severely affected roadbed types in wind and snow disasters.To provide reference for practical road section design and wind-snow disaster prevention,this study focuses on common cut slopes in transportation routes.Using the Mixture model in Fluent,the study simulates the two-phase flow of wind and snow and validates the simulation results.The research investigates snow distribution patterns in cut slopes during wind-snow disasters and compares the flow fields during the evolution of snow distribution.The findings reveal that the accumulation of snow in local protruding areas at the downwind slope of cut slopes is directly related to the formation of vortices inside the cut slope.The snow phase concentration inside the cut slope increases overall due to the accumulation of snow and changes in wind speed and flow field at different times.The maximum concentration of the snow phase appears near the top of the upwind slope.This research provides valuable references for predicting snow-related disasters in cut slopes and for setting parameters in numerical simulations of wind-snow two-phase flow.

关 键 词：风吹雪灾害 风致积雪 积雪分布 

分 类 号：TU205[建筑科学—建筑设计及理论]