WATER TEMPERATURE-FLUCTUATIONS AND EFFECT ON IRRIGATION INFILTRATION

被引:0
|
作者
DUKE, HR
机构
来源
TRANSACTIONS OF THE ASAE | 1992年 / 35卷 / 01期
关键词
VISCOSITY; SIMULATION; UNIFORMITY;
D O I
暂无
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
An infrared thermometer measured the temperature of irrigation water flowing in furrows in fields of com and onions. The temperature increased as much as 22-degrees-C from inflow to downstream ends of the field during mid-afternoon. This temperature increase reduces the viscosity of the water sufficiently to increase the hydraulic conductivity by 70%. Computer simulations determined the effect of measured temperature increases on cumulative infiltration and on distribution of infiltrated water during a hypothetical irrigation. For the case studied, the elevated downstream temperature improved the uniformity of infiltrated water down the furrow.
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页码:193 / 199
页数:7
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