Study of ceilingdeflector application in a poultry house

Abstract

Papers presented to the 11th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 20-23 July 2015.This present work proposes to apply the Computational Fluid Dynamics (CFD) by using Ansys® CFX version 14.5 to evaluate the impact of roof deflectors on the airflow patterns inside a tunnel ventilation poultry building located at Montenegro city (Brazil). Four different cases have been considered: roof with 24° of inclination with and without deflectors, with 6° of inclination and ceiling without inclination. For each case, it has generated three meshes (coarse, intermediate and fine) by using ICEM CFD 14.5 verifying mesh quality by aspect ratio and y+, and the verification has done by comparing velocity and temperature profiles. It was used the k-ε standard turbulent model and Reynolds number at inlet is above 105, isothermal walls, null relative pressure at outlets and variation velocity at inlet according pressure drop. Results obtained show the higher pressure drop at roof with 24° of inclination with deflector.