Numerical prediction of underground water contamination based on a multiphase mixture model

基于多相混合模型的地下水污染数值预测

• 批准号: 10650207
• 负责人: NAKAYAMA Akira
• 金额: $ 1.28万
• 依托单位: Shizuoka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650207/
• 关键词: Porous media; Multi-phase flow; Underground water contamination; Numerical analysis

The two-phase mixture model, proposed by Wang and Beckermann for single component two-phase flows, has been extended to a general model, which can deal with multi-component multi-phase flows associated with underground water contamination.First, Forchheimer's modification was implemented in the model to develop a computer simulation code for predicting mass and heat transfer in single-component two-phase flows, in which the porous inertia is not negligible. Pool boiling in a cavity and mixed convection boiling in a channel, both filled with solid spheres were investigated numerically to verify the computer simulation code.In order to deal with underground multi-component multi-phase flows, the model was modified extensively, such that mass, momentum and energy balances for individual components and phase are conserved. These conservation equations for multi-component multi-phase flows were solved numerically along with auxiliary relationships such as Forchheimer-extended Darcy's law, equilibrium phase diagram, Leverett and hindrance functions.

将Wang和Beckermann提出的单组分两相流动的两相混合模型扩展为可处理与地下水污染相关的多组分多相流的通用模型。首先，在模型中引入Forchheimer修正，开发了预测单组分两相流传质和传热的计算机模拟程序，其中多孔惯性不可忽略。为了验证计算机模拟程序的正确性，对空腔内的池沸腾和通道内的混合对流沸腾进行了数值模拟。为了处理地下多组分多相流，对模型进行了广泛的修改，使单个组分和相的质量、动量和能量平衡得到守恒。数值求解了多组分多相流的守恒方程以及Forchheimer-Extended Darcy定律、平衡相图、Leverett函数和阻碍函数等辅助关系式。

项目成果

H. Kawashima, F. Kuwahara and A. Nakayama: "Similarity solutions for pressure-driven boiling flows in capillary porous media"Int. Comm. Heat Mass Transfer. Vol. 26. 319-327 (1999)

H. Kawashima、F. Kuwahara 和 A. Nakayama：“毛细管多孔介质中压力驱动沸腾流的相似解”Int。

A. Nakayama and F. Kuwahara: "Convective flow and heat transfer in porous media"Recent Res. Devel. Chemical Engg.. Vol. 3. 121-177 (1999)

A. Nakayama 和 F. Kuwahara：“多孔介质中的对流流动和传热”最近的研究。

A.Nakayama: "A Two-phase mixture transformation for analyzing multiphase flows in porons media" Proc.JSSUME '98 Advances in Mechanical Engineering. 73-76 (1998)

A.Nakayama：“用于分析多孔介质中多相流的两相混合变换”Proc.JSSUME 98 机械工程进展。

A. Nakayama, F. Kuwahara, H. Motoyama and M. Mitsui: "A two-phase mixture transformation for analyzing multiphase flows in porous media"Proc. JSSUME'98 Advances in Mechanical Engineering. 73-76 (1998)

A. Nakayama、F. Kuwahara、H. Motoyama 和 M. Mitsui：“用于分析多孔介质中多相流的两相混合变换”Proc。

H.Kawashima: "Similarity solutions for pressure-driven boiling flows in capillary porous media"Int. Comm. Heat Mass Transfer. 26. 319-327 (1999)

H.Kawashima：“毛细管多孔介质中压力驱动沸腾流的相似解”Int。