Abstract
Behavior of an air flow around permeable porous plate placed perpendicularly on a ground plane was experimentally investigated with the aid of a laser Doppler velocimetry. The experiment was performed for three types of porous metal plates with different porosity and permeability. Prom profiles of mean streamwise velocity behind porous plate, we found that a recirculation region reduced with increasing permeability and disappeared for the highest permeability. These velocity profiles were compared to the theoretical analysis from Gortler, and agreed with the solution for values of σ = 10 except for just behind the porous plate with highest permeability. The behavior of velocity field suggested that the permeable porous plate with highest permeability led to stable windbreak effect.
