A complete Simulation and investigation of the hood's airflow under Isothermal suction conditions using CFD

Abstract

In this study, the range of influence of industrial hoods under isothermal conditions has been investigated. For the investigation, a control volume with certain dimensions has been considered around the hood. The suction velocity at the center of the hood is 20 m/s, and to simulate the real state, the side walls have been considered as air inlets at atmospheric pressure. The hood suction has been analyzed for distances of 1, 1.5, 2, 2.5, and 3 m from the floor. Geometry generation, meshing, and numerical solution of the problem have been performed using ANSYS-FLUENT software. To analyze the flow field, the Navier-Stokes and continuity equations have been solved using the turbulent k-ε model. The effect of the hood opening dimensions, the hood distance from the floor, and its suction velocity in different cases has been investigated. The velocity diagram on an imaginary line from the hood center to the floor, as well as the velocity and pressure contours for different distances, have been extracted and investigated. The capture zone was analyzed for each of the mentioned distances, and it was determined that the hood's capture zone at a distance of 2 meters from the floor was the best possible.