沙漠地区三种风沙侧向输导工程的数值模拟
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摘要
[目的]研究沙漠地区交通线路周围侧向输导工程的风沙流场规律,为侧向输导工程的应用提供理论基础。[方法]基于新疆维吾尔自治区哈密市了墩地区风信数据和CFD三维数值模拟,建立不同工况对3种侧向输导工程的风沙流场进行对比分析。[结果]3种侧向输导工程由于结构的不同,风沙流通过开放式羽毛排的排间间距进行侧向输导,封闭式羽毛排和一字排则在排前进行输导。3种侧向输导工程流场作用区域都由输导区和减速区构成,但开放式羽毛排的减速区面积明显小于封闭式羽毛排和一字排。风速较大沙源丰富应使用一字排,风速较大沙源一般应使用开放式羽毛排,风速一般沙源丰富应使用封闭式羽毛排。[结论]侧向输导工程可以对风沙流进行有效输导,不同类型的侧向输导结构适用于不同的工况。
[Objective]Studying the rules of wind and sand flow in lateral transport engineering around desert line to provide theoretical basis for the application of lateral transmission engineering.[Methods]Based on the wind data in the Liaodun area of Xinjiang Autonomous Region and 3 Dnumerical simulation of CFD,the wind and sand flow fields of three lateral transmission engineerings were compared and analyzed under different working conditions.[Results]Due to the structure differences of lateral transportation engineering,wind and sand flow were guided laterally by the spacing of open feather-row,while closed feather-row and straight-row were conducted in front of the engineering.The flow field of three lateral transportation engineerings were all consist of the transportation area and the deceleration zone,but the deceleration zone area of open feather-row was less than those of the other two.Large wind speed and rich sand source should use straight-row engineering.Large wind speed and general sand source should use open feather-row engineering;general wind speed and rich sand source should use closed feather-row engineering.[Conclusion]Lateral transport engineering can effectively transport wind sand flow,and different types of lateral transportation structure are suitable for different conditions.
[Objective]Studying the rules of wind and sand flow in lateral transport engineering around desert line to provide theoretical basis for the application of lateral transmission engineering.[Methods]Based on the wind data in the Liaodun area of Xinjiang Autonomous Region and 3 Dnumerical simulation of CFD,the wind and sand flow fields of three lateral transmission engineerings were compared and analyzed under different working conditions.[Results]Due to the structure differences of lateral transportation engineering,wind and sand flow were guided laterally by the spacing of open feather-row,while closed feather-row and straight-row were conducted in front of the engineering.The flow field of three lateral transportation engineerings were all consist of the transportation area and the deceleration zone,but the deceleration zone area of open feather-row was less than those of the other two.Large wind speed and rich sand source should use straight-row engineering.Large wind speed and general sand source should use open feather-row engineering;general wind speed and rich sand source should use closed feather-row engineering.[Conclusion]Lateral transport engineering can effectively transport wind sand flow,and different types of lateral transportation structure are suitable for different conditions.
引文
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[21]武生智,任春勇.基于欧拉双流体模型的风沙运动模拟[J].兰州大学学报:自然科学版,2012,48(1):104-107.
[22]王康龙,武建军,罗生虎.风沙运动的欧拉双流体模型参数研究[J].中国沙漠,2014,34(6):1461-1468.
[2]杨绚,李栋梁.中国干旱气候分区及其降水量变化特征[J].干旱气象,2008,26(2):17-24.
[3]郭慕萍,王志伟,秦爱民,等.54年来中国西北地区降水量的变化[J].干旱区研究,2009,26(1):122-127.
[4]葛盛昌,周林森.兰新铁路沙害成因及防治对策[J].铁道运输与经济,2007,29(1):33-34.
[5]鲍锋,董治宝.青藏铁路察尔汗盐湖段风沙活动特征[J].中国沙漠,2017,37(4):621-625.
[6]安志山,张克存,屈建军,等.青藏铁路沿线风沙灾害特点及成因分析[J].水土保持研究,2014,21(2):285-289.
[7]Huang Ning,Xia Xianpan,Tong Ding.Numerical simulation of wind sand movement in straw checkerboard barriers.[J].European Physical Journal(E):Soft Matter,2013,36(9):99.
[8]王强强,唐进年,杨自辉,等.埋嵌式塑料网带状沙障的固沙效应及其应用前景[J].中国水土保持,2017(4):35-38.
[9]Zhang Dengshan,Wu Wangyang,Tian Lihui,et al.Effects of erosion and deposition and dimensions selection of straw-checkerboard barriers in the desert of Qinghai Lake[J].Scientia Geographica Sinica,2014,66(4):426-435.
[10]景文宏,程建军,蒋富强.轨枕式挡墙挡风沙功效的数值模拟及试验研究[J].铁道科学与工程学报,2016,13(1):46-54.
[11]Cheng Jianjun,Lei Jiaqiang,Li Shengyu,et al.Effect of hanging-type sand fence on characteristics of windsand flow fields[J].Wind&Structures,An International Journal,2016,22(5):555-571.
[12]李凯崇,刘贺业,蒋富强,等.斜插板挡沙墙风沙防治现场试验研究[J].中国铁道科学,2013,34(2):46-51.
[13]Cheng Jianjun,Lei Jiaqiang,Li Shengyu,et al.Disturbance of the inclined inserting-type sand fence to wind-sand flow fields and its sand control characteristics[J].Aeolian Research,2016,21:139-150.
[14]Izael A L,Ascanio D A,Eric J R P,et al.Optimal array of sand fences[J].Scientific Reports,2017,7:45-48.
[15]程建军,智凌岩,薛春晓,等.铁路沿线下导风板对风沙流场的控制规律[J].中国铁道科学,2017,38(6):16-23.
[16]辛国伟,程建军,杨印海.铁路沿线挂板式沙障开孔特征与风沙流场的影响研究[J].铁道学报,2016,38(10):99-107.
[17]辛国伟,程建军,景文宏,等.来流廓线对风沙流场和风沙堆积影响的数值模拟:以挡沙墙为例[J].干旱区研究,2016,33(3):672-679.
[18]王翠,李生宇,雷加强,等.近地表风沙流结构对过渡带不同下垫面的响应[J].水土保持学报,2014,28(3):52-56.
[19]张正偲,董治宝,赵爱国,等.沙漠地区风沙活动特征:以中国科学院风沙观测场为例[J].干旱区研究,2007,24(4):550-555.
[20]王康龙,武建军,罗生虎.风沙运动的欧拉双流体模型参数研究[J].中国沙漠,2014,34(6):1461-1468.
[21]武生智,任春勇.基于欧拉双流体模型的风沙运动模拟[J].兰州大学学报:自然科学版,2012,48(1):104-107.
[22]王康龙,武建军,罗生虎.风沙运动的欧拉双流体模型参数研究[J].中国沙漠,2014,34(6):1461-1468.