CAJ | 학술논문

为深入研究山体坡度对山体周围环境风的影响,基于计算流体力学理论,选择Fluent仿真环境建立高度相同、坡度不同的二维余弦山体模型进行数值风洞试验.依据高速公路与山体的空间位置关系以及常见车型的风压中心高度,定量研究了山体坡度与山体周围高速公路路面环境风的关系.实验结果表明,山体顶端和山体下游区域是山体周围环境风的局部极大值点,并通过数据分析和曲线拟合得到了相应的拟合公式.实验结论揭示了途径山体的高速公路路面环境风受山体坡度变化的影响规律,为三维山体建模仿真参数的确定提供了依据,可为"风-车-路"系统的深入研究、待建高速公路的选线以及运营高速公路的风速预警系统提供理论和技术支持.
위심입연구산체파도대산체주위배경풍적영향,기우계산류체역학이론,선택Fluent방진배경건립고도상동、파도불동적이유여현산체모형진행수치풍동시험.의거고속공로여산체적공간위치관계이급상견차형적풍압중심고도,정량연구료산체파도여산체주위고속공로로면배경풍적관계.실험결과표명,산체정단화산체하유구역시산체주위배경풍적국부겁대치점,병통과수거분석화곡선의합득도료상응적의합공식.실험결론게시료도경산체적고속공로로면배경풍수산체파도변화적영향규률,위삼유산체건모방진삼수적학정제공료의거,가위"풍-차-로"계통적심입연구、대건고속공로적선선이급운영고속공로적풍속예경계통제공이론화기술지지.
To research the influence of the terrain slope on the wind velocity and freeway driving safety in the hilly area, 2-D cosine hill models were established based on the theory of computational fluid dynamics. These models used to simulate the characteristics of wind velocity around the hills in different slope condition. According to the experimental results, two dangerous freeway locations where the wind-induced accident may most likely happen are analyzed at the height of the common vehicles' wind pressure center to research the driving safety. Fitting formulas are proposed based on the analysis of the experimental results. The conclusions provide a theoretical basis for the further re-search of 3-D hill simulation and "wind-vehicle-road" system. Moreover, the results are also useful in the field of highway design and operation safety management.