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  4. 成都山地所知识仓储（2009年以前）
Error of Pressure Estimation close to Water Table by Different Retention Functions

文献类型：会议论文

作者Pei Yuansheng1; Tian Zhaohui2
出版日期2009
会议日期AUG 08-11, 2009
会议地点Beijing
关键词pressure estimation water table error elimination groundwater retention funcitions
DOI10.1109/ICCSIT.2009.5234395
页码268-271
国家PEOPLES R CHINA
英文摘要Error of pressure estimation (EPE) was produced close to water table due to very high fluid pressure gradient and different retention functions. Generally, EPE depended on pressures distribution on both sides of water table, depth of node below, water table and spatial increment. EPE may accumulate itself to a sizable scale and cause convergence and mass balance problems. In particular, numerical models with the van Genuchten model (vG model) always invariably result in negative EPE while those with the Gardner-Russo model (GR model) and the Brooks-Corey model (BC model) may also cause positive EPE. Under the GR model or the vG model, smaller alpha causes greater negative EPE. Under the BC model, shorter and longer capillary fringe may cause limited positive EPE and great negative EPE, respectively. Numerical models may often underestimate water table responses to infiltration into the line clay while overestimate the responses into the coarse sand. It is essential and feasible to eliminate EPE by way of revising the potentials of block boundary nodes.
源文献作者Li, WH ; Zhou, JH
产权排序2
会议录2009 2ND IEEE INTERNATIONAL CONFERENCE ON COMPUTER SCIENCE AND INFORMATION TECHNOLOGY, VOL 5
语种英语
ISBN号978-1-4244-4518-9
WOS记录号WOS:000279850000059
源URL[http://ir.imde.ac.cn/handle/131551/34925]  
专题成都山地灾害与环境研究所_成都山地所知识仓储（2009年以前）
通讯作者Pei Yuansheng
作者单位1.Beijing Normal Univ, Sch Environm;
2.Chinese Acad Sci, Inst Mt Hazards & Environm
推荐引用方式
GB/T 7714		 Pei Yuansheng,Tian Zhaohui. Error of Pressure Estimation close to Water Table by Different Retention Functions[C]. 见:. Beijing. AUG 08-11, 2009.

入库方式： OAI收割

来源：成都山地灾害与环境研究所

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