Modeling water–NAPL–air three-phase capillary behavior in soils
Modeling water–NAPL–air three-phase capillary behavior in soils
复制标题
模拟土壤中水-NAPL-空气三相毛细管行为
DOI：
10.1016/j.sandf.2014.11.015
复制
发表时间：
2014
影响因子：
3.7
通讯作者：
M. Kikumoto
中科院分区：
文献类型：
--
作者：
Keita Nakamura;M. Kikumoto
简要回顾了现有的NAPL、水、空气三相饱和度与毛细管压力的关系模型，并讨论了其局限性。特别令人感兴趣的是，他们无法精确地描述NAPL的侵入和排放行为，特别是当NAPL的饱和度较低时。在此基础上，定义了一个新变量μ作为状态参数，该变量反映了水-NAPL-空气三相体系与任意两相体系之间的过渡现象，从而建立了一个新的水-NAPL-空气三相体系模型。通过将计算结果与普通模型和已有的实验结果进行比较，验证了该模型的有效性。该模型能较好地考虑水-NAPL-空气三相之间的相互作用，预测NAPL在非饱和土中的实际滞留行为。
Existing models relating the capillary pressures and the degrees of saturation of NAPL, water, air three-phase are briefly reviewed, and their limitations are discussed. Of particular interest is their inability to describe the intrusion and emission behavior of NAPL precisely, especially when the degree of saturation of NAPL is low. A new variableμrepresenting the relative magnitude of NAPL pressure to water pressure and air pressure is then defined as a state parameter, and a novel water–NAPL–air three-phase model is proposed, which considers the transition phenomena between water–NAPL–air three-phase and arbitrary two-phase system through the parameterμ. The validity of the proposed model is checked by comparing the calculation results with those obtained by an ordinary model and existing experimental results. The proposed model is shown capable of properly considering the interactions among the water–NAPL–air three-phase, and predicting the actual retention behavior of NAPL in unsaturated ground.
影响因子：
5.4
作者：
R. Lenhard;J. Parker
通讯作者：
R. Lenhard;J. Parker