Prediction_Correction Method for Monotone Variational Inequality Under G_norm;
求解單調變分不等式的G-模意義下的預估校正算法
According to theory of the infiltraing water in unsaturated zone,the mathematical model,definited for moisture’s movment,is established on the basis of V-G model,then numerical simulation is executed by computer,and the situation of moisture’s movment in two different soil partical diameters is obtained.
為了定量整體描述非飽和-飽和區(qū)域內水流入滲過程,在水分入滲理論基礎上,基于V-G模型建立了非飽和-飽和區(qū)域內水流運動的數(shù)學模型,分別對水分在不同粒徑大小土壤中的入滲過程進行模擬;分析結果表明:入滲水分進入土壤的初期,由于粒徑較大的土壤中充氣粗孔的阻隔,使得壓力水頭與粒徑較小的土壤相比減小速率較慢;當進入滲漏與滲透階段后,粗大孔隙中的空氣基本被水分所驅替,滲透性較好的土壤中壓力水頭減小速率較大;毛細管帶高度也是導致下滲速率不同的因素之一,毛細管高度越大,進入滲透階段的時間越短,反映在壓力水頭的變化上則為壓力水頭變化速率降低。