(139g) Assessment of the Effect of Dairy Powder Properties on Lean-Phase Pneumatic Transport: A CFD-DEM Modelling Approach
AIChE Annual Meeting
Monday, October 30, 2017 - 2:24pm to 2:43pm
In this study, a multi-scale CFD-DEM model was developed and validated with data from a 50 mm diameter pneumatic transport rig based on conveying of cohesive fat-filled milk powder fines. The impact of conveying parameters and the properties of the powder fines on pressure drop and blockage boundary in the rig was analyzed. Pressure drop and local particle volume fractios were measured with the aid of a differential pressure gauge and an optical fibre probe respectively.
The multi-scale model is achieved by dynamically coupling computational fluid dynamics (CFD) for modelling the fluid flow field, and discrete element method (DEM) for modelling the behaviour of the powder particles, referred to as CFD-DEM. The validated CFD-DEM model shows a reasonable accuracy in predicting the system pressure drop and particle volume fraction. The validated model can be used to solve pneumatic transport problems associated with highly cohesive dairy powders.