TITLE:
Experimental and Numerical Study of Dilute Gas-Solid Flow inside a 90° Horizontal Square Pipe Bend
AUTHORS:
Walid Aniss Aissa, Tarek Abdel Malak Mekhail, Soubhi Ali Hassanein, Osama Hamdy
KEYWORDS:
90° Bend; CFD; Gas-Solid Flow; k - ε Model
JOURNAL NAME:
Open Journal of Fluid Dynamics,
Vol.3 No.4,
December
4,
2013
ABSTRACT: A pneumatic test rig is built to test a curved 90° square bend in an open-circuit horizontal-to-horizontal suction wind tunnel system. Sand particles are used to represent the solid phase with a wide range of particle diameters. Velocity profiles are constructed by measuring the gas velocity using a 3-hole probe. Flow patterns inside the bend duct are introduced using sparks caused by burning sticks of incense with the air flow inside the piping system for flow visualization purpose. Numerical calculations are performed by Lagrangian-particle tracking model for predicting particle trajectories of dispersed phase, and standard k-ε model for predicting the turbulent gas-solid flows in bends. Comparisons made between the theoretical results and experimental data for the velocity vectors and particle trajectories show good agreement.