Mean flow of turbulent boundary layers over porous substrates
Luis Blay Esteban, Eduardo Rodríguez-López, Manuel Ferreira, Bharathram Ganapathisubramani
Abstract
Wind tunnel measurements over commercially available foams have been performed to characterize the boundary-layer flow over realistic permeable rough surfaces. The mean flow indicates that the flow over these surfaces can be considered similar to flow over rough-walls in the log region. The near-wall region appears to be under the combined influence of roughness and permeability. An analysis framework based on the data is presented where future studies can examine the combined influence of roughness and permeability.
Topics & Concepts
Boundary layerPorositySurface finishPermeability (electromagnetism)TurbulenceWind tunnelMechanicsMaterials scienceFlow (mathematics)Surface roughnessMean flowGeologyGeotechnical engineeringComposite materialPhysicsChemistryMembraneBiochemistryFluid Dynamics and Turbulent FlowsWind and Air Flow StudiesParticle Dynamics in Fluid Flows