阿联酋铁路沿线环境风特性仿真研究  

Simulation Study of Ambient Wind Characteristic along UAE Railway

作　　者：汪秀平 王祉歆 周伟[2,3,4,5] 徐翠强 李景涛 姜琛 王雅昭 WANG Xiu-ping;WANG Zhi-xin;ZHOU Wei;XU Cui-qiang;LI Jing-tao;JIANG Chen;WANG Ya-zhao(CRRC Qingdao Sifang Co Ltd,Qingdao 266111,China;School of Traffic&Transportation Engineering,Central South University,Changsha 410075,China;Key Laboratory of Traffic Safety on Track(Central South University),Ministry of Education,Changsha 410075,China;Joint International Research Laboratory of Key Technology for Rail Traffic Safety,Changsha 410075,China;National&Local Joint Engineering Research Center of Safety Technology for Rail Vehicle,Changsha 410075,China)

机构地区：[1]中车青岛四方机车车辆股份有限公司,山东青岛266111 [2]中南大学交通运输工程学院,湖南长沙410075 [3]中南大学轨道交通安全教育部重点实验室,湖南长沙410075 [4]轨道交通安全关键技术国际合作联合实验室,湖南长沙410075 [5]轨道交通列车安全保障技术国家地方联合工程研究中心,湖南长沙410075

出　　处：《五邑大学学报（自然科学版）》2023年第3期32-41,共10页Journal of Wuyi University(Natural Science Edition)

基　　金：湖南省自然科学基金面上项目(2020JJ4118)。

摘　　要：阿联酋富查伊拉地区的丘陵地貌对环境来流的风速、风向影响较大,风速加速效应会危及沿线铁路的行车安全.本研究以阿联酋铁路实际地形对环境来流的影响特性为对象,通过地形重构建模与流体力学仿真,研究了不同来流风向与风速下不同位置的风速放大效应.计算结果表明:当来流风向与峡谷地形走势接近时,铁路沿线的近地风场放大效应较为明显,放大系数达2.4,可作为铁路防风设计的风速参考依据;同时测点风向受地形走势影响较大,建议铁路线路避开山谷走向发生突变的转角处和紧缩区域.The hilly landforms in the Fuchaila region of the United Arab Emirates have a great impact on the wind speed and direction of the environmental incoming flow,and the acceleration effect of the wind speed will endanger the traffic safety of the railway along the line.This study takes the influence characteristics of the actual terrain of the UAE railway on the environmental incoming flow as the object,and studies the wind speed amplification effect at different locations under different incoming wind directions and wind speeds through terrain reconstruction modeling and hydrodynamics simulation.The calculation results show that when the incoming wind direction is close to the canyon terrain,the amplification effect of the near-ground wind field along the railway is obvious,with the amplification coefficient of 2.4,which can be used as the reference basis for the wind speed of the railway windbreak design;At the same time,the wind direction of the survey point is greatly affected by the terrain trend,so it is recommended that the railway line avoid the corners and contraction areas where the valley trend changes abruptly.hydrodynamics simulation.The calculation results show that when the incoming wind direction is close to the canyon terrain,the amplification effect of the near-ground wind field along the railway is obvious,with the amplification coefficient of 2.4,which can be used as the reference basis for the wind speed of the railway windbreak design;At the same time,the wind direction of the survey point is greatly affected by the terrain trend,so it is recommended that the railway line avoid the corners and contraction areas where the valley trend changes abruptly.

关 键 词：实际地形 风场仿真 计算流体力学 峡谷放大效应 

分 类 号：P463.21[天文地球—大气科学及气象学]