长江科学院院报2019，Vol.36Issue(1)：13-20,28,9.DOI:10.11988/ckyyb.20170593
包气带水分迁移离心模拟的可行性探讨
Investigation on the Feasibility of Centrifugal Simulation on Water Migration in Vadose Zone
摘要
Abstract
As the main driving force of pollutant migration and the movement of water, vapour and heat, water movement in vadose zone is of very important significance to the " four water" transformation, groundwater source, water resources development and utilization, ecological protection, and human’s production and life. Nevertheless, it is still controversial whether centrifugal simulation can be applied to researching the water migration in vadose zone. In this paper, the feasibility of applying centrifugal simulation to researching water migration in vadose zone is investigated via establishing one-dimensional theoretical and numerical models and verification by four sets of data. Results demonstrate that: (1) numerical model could well reproduce the water migration process presented in the literature, matching well with experimental data; (2) the analysis of materials conservation error show that the quality of the numerical simulation results can be guaranteed to be excellent when the time step and space step are small enough; (3) it is feasible to apply centrifugal simulation technology to researching the water migration in va-dose zone; (4) the uneven distribution of acceleration in the centrifugal simulation would result in the lag of water migration at the bottom of the model behind that of the prototype, which, however, can be alleviated by using high-er centrifugal acceleration.关键词
包气带/水分迁移/离心模拟/土壤污染/可行性Key words
vadose zone/water migration/centrifugal simulation/soil contamination/feasibility分类
建筑与水利引用本文复制引用
秦欢欢..包气带水分迁移离心模拟的可行性探讨[J].长江科学院院报,2019,36(1):13-20,28,9.基金项目
国家自然科学基金青年基金项目( 41501374 ) （ 41501374 ）
浙江省自然科学青年基金项目( LQ16D010001 ) （ LQ16D010001 ）
浙江省教育厅科研项目( Y201534666) （ Y201534666）
浙江省教育厅访问学者专业发展项目( FX2016060) （ FX2016060）
