Akademik Veri Yönetim Sistemi
JOURNAL OF HYDROLOGY, cilt.666, 2026 (SCI-Expanded, Scopus)
This study aims to clarify the use of the Darcy-Forchheimer model in porous media by focusing on the physical interpretation and practical determination of its parameters, particularly the Forchheimer coefficient. Although the Darcy-Forchheimer equation effectively represents the Forchheimer flow regime (1-10 < R-e < 150-300) located between the laminar and turbulent regimes in porous media, its application is often limited by the difficulty of accurately determining its two parameters. While the Darcy coefficient is analytically related to particle size and can be directly computed, the Forchheimer coefficient lacks a clearly defined relationship and is typically derived through extensive experimental studies. In this study, experimental infiltration tests are conducted on pervious concrete specimens with varying aggregate sizes to determine the Darcy and Forchheimer coefficients. These parameters are validated using CFD simulations in SimFlow (OpenFOAM), and a broad parametric analysis is performed to evaluate the sensitivity and flow behavior. Based on the experimental and numerical results, a strong correlation is established between the parameters and particle size. Finally, a dimensionless relationship is developed to describe flow through porous media in the Forchheimer regime. While this relationship was initially derived from pervious concrete data, comparison with additional data from the literature demonstrates its applicability across a wider range of porous media. This formulation reduces the number of required parameters and enables a more practical, application-oriented approach to modeling nonlinear flow.