Analytical and Numerical Modeling of Flow in a Fractured Gneiss Aquifer

• 作者: Broder J. Merkel Ramadan Abdelaziz
• 来源期刊: 水资源与保护(英文)
• 学科: 医学
• 关键词: Ansys/Flotran MLU for Windows GNEISS PACKER Test Fractured AQUIFER
• 年，卷（期）: 2012,（8）
• 页码范围: 657-662
• 页数: 6页
• 分类号: R73

摘要

Investigating and modeling fluid flow in fractured aquifers is a challenge. This study presents the results of a series of packer tests conducted in a fractured aquifer in Freiberg, Germany, where gneiss is the dominant rock type. Two methods were applied to acquire hydraulic properties from the packer tests: analytical and numerical modeling. MLU (Multi-Layer Unsteady state) for Windows is the analytical model that was applied. ANSYS-FLOTRAN was used to build a two-dimensional numerical model of the geometry of the layered aquifer. A reasonable match between experimental data and simulated data was achieved with the 2D numerical model while the solution from the analytical model revealed significant deviations with respect to direction.