Comprehensive study of the effect of hydrodynamic coefficients of infinite and finite leakage aquifers on hydraulics of unsteady groundwater flow

Saeedpanah, Iraj; Taheri, Siamak

doi:10.22125/iwe.2020.109908

Comprehensive study of the effect of hydrodynamic coefficients of infinite and finite leakage aquifers on hydraulics of unsteady groundwater flow

Document Type : Original Article

Authors

Iraj Saeedpanah ¹

Siamak Taheri ²

¹ Assistant Professor, Department of Civil Engineering ,University of Zanjan, Iran

² 2- M.Sc. student Hydraulic Structures, Civil Engineering ,University of Zanjan, Iran

10.22125/iwe.2020.109908

Abstract

In this study with respect to the sensitivity analysis of transmissibility coefficient, storage coefficient and specific leakage of infinite and finite leakage aquifers in the unsteady flow state of groundwater, which was carried out using an analytical method, these results were obtained: 1. Withincreasing the coefficients of transmissibility, storage and specific leakage of infinite and finite leakage aquifer, the drawdownreduces. 2. In all of the examined sensitivity analysis, it was observed that the drawdown of infinite leakage aquifer is more than the finite leakage aquifer and the drawdown of finite leakage aquifer 2 is more than the finite leakage aquifer 1. 3. With increasing the transmissibility coefficient and specific leakage of infinite and finite leakage aquifer, the groundwater flow reaches earlier to steady state. 4. With increasing the storage coefficient of infinite and finite leakage aquifer, the groundwater flow reaches later to steady state. 5. Infinite leakage aquifer reaches the steady state later than the finite leakage aquifer and finite leakage aquifer 1 reaches the steady state earlier than the finite leakage aquifer 2.

Keywords

Leakage aquifer

Unsteady flow

Transmissibility coefficient

Storage coefficient

Specific leakage