敦煌莫高窟窟区风环境研究

发布时间：2018-03-06 22:07

本文选题：莫高窟　切入点：模拟　出处：《西安建筑科技大学学报(自然科学版)》2017年01期 　论文类型：期刊论文

【摘要】：通过PHOENICS模拟研究莫高窟窟区及窟前林带风环境特征.结论如下:当各风向风速为最大值时,莫高窟地形地势削弱东、西向风风速,值均大于3 m/s,西南风除外;除窟前广场区域外,窟区绿化降低整个区域风速,部分风向降低程度大于1 m/s;窟前广场背风区域有绿化后风速不降反增,东北风4 m/s时72窟窟前风速由3.52 m/s增至4.87 m/s:窟前风向(0.34)比窟顶风向(0.4)稳定;风速比与来流风速大小无关,与有无绿化及风向有关,东北风无绿化及有绿化时分别为1.27和1.08.
[Abstract]:The characteristics of wind environment in the Mogao Grottoes and the fore-forest belt of the grottoes are studied by PHOENICS simulation. The conclusions are as follows: when the wind speed of each wind direction is the maximum, the topography of the Mogao Grottoes weakens the wind speed in the east and west directions, and the wind speed is more than 3 m / s, except for the south-west wind; In addition to the Grottoes Piazza area, greening in the Grottoes area reduces the wind speed in the whole area, and the wind direction decreases by more than 1 m / s; the wind speed increases instead of falling after greening in the Grottoes Piazza Leeward area. The wind speed in front of 72 grottoes increased from 3.52 m / s to 4.87 m / s when the northeast wind was 4 m / s (0.34) was more stable than that of the top wind (0.4), the wind speed ratio was not related to the wind speed of incoming flow, but was related to the greening and direction of greening, and the northeast wind was 1.27 and 1.08 when there was no greening and greening, respectively.
【作者单位】：西安建筑科技大学建筑学院;敦煌研究院保护研究所;兰州大学土木工程与力学学院;河南科技大学建筑工程学院;
【基金】：国家自然科学基金资助项目(51378412) 国家文物局基金资助课题项目(20110308)
【分类号】：P49;K879.21

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