Simulation of air velocity in a vertical perforated air distributor

International Conference on Chemical and Bioprocess Engineering

地球科学;化学;生物科学

Ngu, T.N.W.^1 ; Chu, C.M.^1 ; Janaun, J.A.^1

Chemical Engineering Programme, Faculty of Engineering, Universiti Malaysia Sabah (UMS), Sabah

88400, Malaysia^1

关键词: Air velocities;    Drawing softwares;    Engineering applications;    Flow distribution;    Perforated pipes;    Perforated tubes;    Uniform flow;    Uniform flow distributions;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/36/1/012047/pdf
DOI  :  10.1088/1755-1315/36/1/012047

学科分类：生物科学（综合）

来源: IOP

【 摘 要 】

Perforated pipes are utilized to divide a fluid flow into several smaller streams. Uniform flow distribution requirement is of great concern in engineering applications because it has significant influence on the performance of fluidic devices. For industrial applications, it is crucial to provide a uniform velocity distribution through orifices. In this research, flow distribution patterns of a closed-end multiple outlet pipe standing vertically for air delivery in the horizontal direction was simulated. Computational Fluid Dynamics (CFD), a tool of research for enhancing and understanding design was used as the simulator and the drawing software SolidWorks was used for geometry setup. The main purpose of this work is to establish the influence of size of orifices, intervals between outlets, and the length of tube in order to attain uniformity of exit flows through a multi outlet perforated tube. However, due to the gravitational effect, the compactness of paddy increases gradually from top to bottom of dryer, uniform flow pattern was aimed for top orifices and larger flow for bottom orifices.