Dispersion of a bent chimney fume around a variably oriented building

In addition to experimental investigations, a computational study was conducted in order to analyse the structure of the flow issued from a bent chimney around a parallelepiped obstacle. The particle image velocimetry (PIV) technique was applied to generate an experimental database suitable for validation of the authors numerical simulations. The numerical model is based on the resolution of the NavierStokes governing equations by means of the finite volume method associated with the second-order model. This gives satisfying results in the exit region and in the trailing zone of the jet. Comparing the obtained numerical results with the experimentally tracked data confirmed the authors opinion. The comparison concerned both the mean and the fluctuating dynamic flow features. Once validated, their model allowed the evaluation of the effect of the obstacle attack angle (0,15,30,45, and 75) on the dynamic and mass flow features.