| 防护林搭配灌草条件下的PIV实验研究 |
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| 引用本文： | 金文,王元,张玮. 防护林搭配灌草条件下的PIV实验研究[J]. 中国沙漠, 2003, 23(5): 600-603 |
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| 作者姓名： | 金文 王元 张玮 |
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| 作者单位： | 1. 西安航空技术高等专科学校 动力工程系, 陕西 西安 710077;2. 西安交通大学 生态环境与现代农业工程中心, 西安 710049 |
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| 基金项目： | 中国自然科学基金项目(10272089)，中国科学院资源与生态环境研究重大项目(KZ951 B1 213 02)资助 |
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| 摘 要： | 在低速风洞中,利用粒子图像测速仪(PIV),采用2帧-互相关的分析方法,对疏透度为30%、带前搭配灌草的防护林绕林流场的流动特征进行实验测量,获得其较大范围(11 H×3 H,H为防护林高度)绕林流场的速度矢量分布图、流速分布图和涡量分布图,与带前无草的防护林流场进行对比分析研究,并且利用CFD软件STAR CD对其数值模拟计算,从而发现防护林在搭配灌草条件下对防护林防护效应的影响。
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| 关 键 词： | DPIV 风洞 防护林 灌草 STARCD |
| 文章编号： | 1000-694X(2003)05-0600-04 |
| 收稿时间： | 2002-09-15 |
| 修稿时间： | 2002-09-15 |
Experimental Research with PIV on Flow Fields through Windbreaks behind Brushwood |
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| JIN Wen,WANG Yuan,ZHANG Wei. Experimental Research with PIV on Flow Fields through Windbreaks behind Brushwood[J]. ournal of Desert Research, 2003, 23(5): 600-603 |
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| Authors: | JIN Wen WANG Yuan ZHANG Wei |
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| Affiliation: | 1. Xi'an Aerotechnical College, Xi'an 710077, China;2. The Center for Environment and Modern Agriculture Engineering, Xi'an Jiaotong University, Xi'an 710049, China |
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| Abstract: | The Particle Image Velocimetry (PIV) and 2|frames cross|correlation technique were adopted to measure and analyze the characteristics of flow|field in windbreak with porosity of 30%. The experiment was conducted in low|speed wind tunnel, and at the front of windbreak there was brushwood. A series of velocity vector fields, velocity field and vorticity field in 11 H 3 H (H refers to height of windbreak) range have been figured out. The results were compared with that of windbreak without brushwood. Furthermore, the experimental process was numerically simulated by the means of CFD software STAR|CD. Lastly, the shelter effect of windbreak has been discussed. |
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| Keywords: | 2D-PIV wind tunnel windbreaks brushwood STAR-CD software |
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