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痕量灌溉的数值模拟和实验研究

作  者:
易鑫;刘洁;史玉升
单  位:
华中科技大学材料成形与模具技术国家重点实验室
关键词:
痕量灌溉;数值模拟;试验周期和成本
摘  要:
痕量灌溉技术是一种具有双层过滤膜的新型节水技术,其灌溉管的核心器件由面积大、孔径小的过滤膜和面积小、孔径大的毛细管束组成。在痕量灌溉产品的研发过程中需要多次修改产品参数,小批量试生产后才能进行产品定型,存在开发成本高、周期长的问题。为节约痕量灌溉试验的试验周期和成本,对痕量灌溉产品进行数值模拟仿真研究,并通过室内实验验证和修正数值模型,为痕量灌溉产品的定型提供一定的参考价值。研究结果表明,通过曲线拟合,数值模型与室内实验模型的残差平方和分别为0.021、0.12和0.003,数值模型基本与室内实验模型吻合。
译  名:
Numerical Simulation and Experimental Investigation on The Trace Quantity Irrigation
作  者:
YI Xin;LIU Jie;SHI Yu-sheng;Huazhong University of Science and Technology;
关键词:
water-saving irrigation;;simulation;;saving the time and cost of tests
摘  要:
Trace quantity irrigation(TQI) is a new water-saving technology,including two lays of filter menbranes,one with large surface and tiny aperture,the other with small surface and big diameter.In the period of researching and developing the TQI products,the product parameters need to be modified.And then after the small amount trials,the shape can be defined,which results in the high cost and time wasting.In the great scale of field irrigation experiments,all geometry sizes of irrigation pipe and parameters of irrigation system need plentifully repeated tests,which results in high cost and time.To save the period and cost of trace quantity irrigation(TQI) experiments,the TQI products are simulated to prove and improve the model by laboratory tests for defining the shape of the TQI products.The research results show that the simulation models can match well with the experiments with the sum of squares of residuals of 0.021,0.12 and 0.003,respectively.

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