| 纵向沙丘和横向沙丘模拟流场的实验研究 |
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| 引用本文： | 李志忠,关有志.纵向沙丘和横向沙丘模拟流场的实验研究[J].中国沙漠,1996,16(4):360-363. |
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| 作者姓名： | 李志忠 关有志 |
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| 作者单位： | 南京大学大地海洋科学系，新疆师范大学地理系，中国科学院兰州沙漠研究所 |
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| 摘 要： | 实验选用半圆柱体沙丘模型脊线与风洞实验段风向构成６组不同大小的交角，通过对其纯气流绕流流场、表面压力分布以及风沙堆积形态的观测和分析，查明了纵向沙丘和横向沙丘模拟流场的结构特征。模拟结果可与野外观测资料对比
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| 关 键 词： | 纵向沙丘 横向沙丘 风洞实验 模拟流场 |
EXPERIMENTAL STUDY ON IMITATIVE FLOW PATTERN OF LONGITUDINAL DUNES AND TRANSVERSE DUNES |
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| Abstract: | During the experiment in the wind tunnel, 6 angles between the trend of the model and the wind orientation were constituted. Through observing and analysing the pure flow pattern, pressure distribution and aeolian depositional form around the dune model under these six circumstances, the characteristics of flow pattern on the surface of longitudinal dunes and transverse dunes have been provided. On the whole, the differences between these 2 flow patterns are that the intensive sideward flow and returning eddy exist on the lee side of longitudinal dunes. |
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| Keywords: | Longitudinal dunes Transverse dunes Wind-tunnel experiment Imitative flow pattern |
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