A three dimensional finite volume model for simulation of soil wetting pattern under drip irrigation

سال انتشار: 1394
محل انتشار: دومین کنفرانس بین المللی محیط زیست و منابع طبیعی
کد COI اختصاصی: IENC02_001
زبان مقاله: انگلیسی
تعداد مشاهده: 710

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نویسندگان

Mohammadreza Naghedifar

Department of Water Engineering, College of Agriculture, Ferdowsi University of Mashhad (FUM), Mashhad, Iran

Hossein Ansari

Department of Water Engineering, College of Agriculture, Ferdowsi University of Mashhad (FUM), Mashhad, Iran

Sayyed majid Hasheminia

Department of Water Engineering, College of Agriculture, Ferdowsi University of Mashhad (FUM), Mashhad, Iran

Ali Naghi Ziaei

Department of Water Engineering, College of Agriculture, Ferdowsi University of Mashhad (FUM), Mashhad, Iran

چکیده

The knowledge of soil wetting pattern dimensions is one of the most important design parameters in drip irrigation systems. In this study, a three dimensional (3D) FORTRAN code based on finite volume approach is provided to investigate about wetting pattern characteristics under line source and point source drip irrigation systems. The model was validated with data obtained by HYDRUS 2D software. The results showed that the model is able to predict soil wetting pattern under both line source (2D model) and point source (3D model) irrigation systems in different soil textures. Eventually, the ability of this model for simulation of soil water redistribution process was investigated and acceptable results were obtained.

کلیدواژه ها

Richards’ equation, trickle irrigation, line source, point source, finite volume model

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