Numerical and Experimental Analyses of a Sandy Soil Water Movement under a Point Source Using Dynamic Pore Network Modeling

Journal of Applied Biological Sciences

Saeed SAMADIANFARD¹  Amir Hosein NAZEMI¹  Ali Ashraf SADRADDINI¹ 

关键词: Dynamic pore network;    HYDRUS 2D model;    laboratory experiments;    Richards' equation;   

DOI  :  

学科分类：生物科学（综合）

来源: Nobel Bilim ve Arasirma Merkezi/Nobel Science and Research Cente

【 摘 要 】

Waterflowsimulationinporousmediumsuchassoilisanimportanttopicinseveralbranchesofhydrology,soilscienceandagriculturalengineering.Inthepresentstudy,numericalresultsfromadynamicporenetworkmodelwereusedtodetermineamacroscopicrelationshipbetweencapillarypressureandfluidsaturations.ThenusingtheresultedrelationshipfromporenetworkmodelingandsolvingthepartialdifferentialRichards'equationbyfinitedifferencescheme(PNMCRE),watermovementinthesoilhasbeensimulated.Also,soilwatermovementwasinvestigatedbylaboratoryexperimentsonsandysoil.TheperformanceofPNMCREwasevaluatedbycomparingthesimulatedwettingfrontswithbothoftheobservedpatternsandthosesimulatedbyHUDRUSsoftwarepackage.StatisticalanalysisshowedthatPNMCREmodelwithminimumerrorsandhighcorrelationcoefficientsforalldischargeratesandintimeintervalshadabetteragreementwithobservedpatternsincomparisonwithHYDRUS2D.

【 授权许可】

Unknown