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《Journal of Sichuan University(Engineering Science Edition)》 2010-04
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Approach of Water Free Surface Adapting Grid System to Simulating Phreatic Surface Seepage Flow with 3D Unstructured Grids

LI Lian-xia1,LIAO Hua-sheng1* ,ZHENG Xiao-yu2,LIU Da3,ZOU Jun4 ( 1. State Key Lab. of Hydraulics and Mountain River Eng. ,Sichuan Univ. ,Chengdu 610065,China; 2. HydroChina Chengdu Eng. Co. ,Chengdu 610072,China; 3. Guangdong Provincial Investigation Design and Research Inst. of Water Conservancy and Electric Power,Guangzhou 510610,China; 4. Pearl River Hydraulics Research Inst. ,Guangzhou 510611,China)  
The method of water free surface adapting grid system with 2D structured grids was extended to 3D unstructured grids to simulate phreatic surface in seepage flow. In this approach,the grid system does not need to be modified or regenerated during nonlinear iterations,whereas free surface is mapped to grid nodes to determinate the final phreatic surface without handling seepage face specifically. The good agreement of computations and experimental results indicated that this method can capture the phreatic surface in 3D unstructured grids with well precision. This study extended the application range of adapting grid method in unconfined seepage flow.
【Fund】: 国家科技支撑计划资助项目(2007BAC18B01);; 教育部博士点新教师基金资助项目(20090181120013);; 四川大学青年基金资助项目(校青2008037)
【CateGory Index】: TV139.14
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