A LOW-INTENSITY, HIGH-UNIFORMITY WATER APPLICATION SYSTEM
A LOW-INTENSITY, HIGH-UNIFORMITY WATER APPLICATION SYSTEM
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低强度、高均匀性的喷水系统
DOI：
10.2136/sssaj2004.1833
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
G. Bubenzer
中科院分区：
文献类型：
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作者：
M. Hanke;D. Perry;K. Kung;G. Bubenzer
许多与环境质量相关的研究领域都需要高均匀性和低强度的降雨模拟器。为了研究现场尺度大孔隙型优先流的特征，我们设计了一种便携式施水系统，适用于施水强度<5 mm h -1 ，在不同气候条件下进行长期稳态渗透实验。我们的结果表明，当在345 kPa压力下施加水时，系统可以将4.36 mm h -1 的水输送到19.2 x 2.7 m，均匀度为80%至85%，而内部16.2 x 2.1 m的均匀度达到94%至97%。该系统的性能不受环境风速的影响。通过间歇性浇水可以实现较低的浇水强度。
Rainfall simulators with high uniformity and low intensities are required in many research areas related to environmental quality. To examine the characteristics of field-scale macropore-type preferential flow, we designed a portable water application system suitable to apply water with intensity < 5 mm h -1 for long-term steady-state infiltration experiments under different climatic conditions. Our results showed that, when water was applied at 345 kPa pressure, the system could deliver 4.36 mm h -1 of water to 19.2 by 2.7 m with 80 to 85% uniformity, while uniformity of the inner 16.2 by 2.1 m reached 94 to 97%. The performance of this system was not influenced by the ambient wind speed. Lower intensities of water application can be achieved by applying water intermittently.