Computational Fluid Dynamics (CFD) simulations and experimental measurements have been performed to study dilute gas-solid flow entering a bifurcation duct downstream of a curved 90° bend. The inlet to the model bifurcation duct is square-sectioned and has a hydraulic diameter of 250 mm. The model is a scaled replica of a real bifurcation duct which is being used to split the flow of pulverised coal particles in a Lignite-fired power station. Both computer simulation and laboratory experiment have been carried out at a bulk gas velocity of 11 m/s and with spherical glass particles having a volume-weighted mean diameter of 77 μm. The numerical studies show significant flow instabilities within the bifurcated ducts. The averaged gas and solids flow properties are measured using Laser-Doppler Anemometry (LDA) and they have been applied to validate the numerical predictions. NOMENCLATURE