Abstract
A two-dimensional turbulent flowfield around a square rib placed in a surface boundary layer is predicted using both Algebraic Stress Model (ASM) and the standard κ-ε turbulence model. The results from these models are compared with those of wind tunnel tests conducted by the authors. The predicted flowfield by means of ASM correspond fairly well to the experimental data, while the standard κ-ε model overestimates κ values around the frontal corner and cannot reproduce the reverse flow on the roof. The differences between the results obtained from two models are examined precisely by comparing the distributions of production terms of turbulence energy κ and Reynolds stresses utuj, thus the structual shortcomings of the standard κ-ε model are clarified.
