@inproceedings{e43cb6b1bab244b19c29fe1a9bd782df,
title = "An experimental investigation of the brinkman layer thickness at a fluid-porous interface",
abstract = "In the present study, we characterized the flow in the vicinity of a permeable interface using particle image velocimetry (PIV) and refractive index matching (RIM). The porous layer is exposed to a laminar flow in the overlying fluid layer, and the velocity field in the interfacial region is measured. The averaged velocities of fluid particles decrease continuously when moving from the fluid layer into the porous one. We measure the thickness of the transition layer, also known as Brinkman layer, defined as the depth below the porous interface within which the velocity decreases to a constant value. It was observed that the thickness of Brinkman layer is of order of the grain diameter, and hence, much larger than the square root of permeability predicted by previous theoretical studies. A new theoretical approach based on depth-dependent permeability and effective viscosity is performed, that agreed well with experimental results.",
keywords = "Brinkman layer, Fluid-porous laye, Permeable interface",
author = "Afshin Goharzadeh and Arash Saidi and Dianchang Wang and Wolfgang Merzkirch and Arzhang Khalili",
year = "2006",
doi = "10.1007/978-1-4020-4150-1_43",
language = "British English",
isbn = "9781402041495",
series = "Solid Mechanics and its Applications",
publisher = "Springer Verlag",
pages = "445--454",
booktitle = "IUTAM Symposium on One Hundred Years of Boundary Layer Research",
address = "Germany",
}