Virtual Powder Flow Course  - 12-13 October, 2021 from 3pm to 6pm (CET)

Program

Day 1 : Fundamentals

15h – 15h30 : Welcome

15h30 – 16h30 : Interactions between the grains

16h30 – 16h45 : Pause

16h45 – 17h45 : Macroscopic behaviors of powders and granular materials

17h45 – 18h : Conclusions

Day 2 : Applications

15h - 16h30 : Which equipment to characterize your powders?

16h30 – 16h45 : Pause

16h45 – 17h45 : Correlation with industrial cases

17h45 – 18h : Conclusion  

1. FUNDAMENTALS: Interactions between the grains

In this first lecture, the forces playing a role inside a powder are listed and their effects on the bulk properties are discussed. A deep knowledge of the forces acting between the grains and the parameters influencing these forces helps to understand the behavior of powders and granular materials in an industrial production plant.

KEYWORDS | Non-cohesive VS cohesive, Contact forces, Cohesive forces, Hydrodynamic forces

2. FUNDAMENTALS: Macroscopic behaviors of powders and granular materials

In this second lecture, the macroscopic properties of a granular pile are discussed. We start with the packing fraction, which is the main physical characteristic of an assembly of grains. Afterward, the flowing properties of both cohesive and non-cohesive powders are discussed. Finally, we discuss the combined effect of humidity, temperature and electrostatic charges on powder flow.

KEYWORDS | Packing fraction, Powder flow, Environmental conditions, Electrostatic charges

3. WHICH EQUIPMENT TO CHARACTERIZE YOUR POWDERS?

In the third lecture, participants will be introduced to the different methods available to characterize powder behaviors. We will show how the information gathered for these methods can be combined to draw a complete picture of the powder properties. The importance of choosing the right method depending on the stress state and flow field at which the powder is submitted will be highlighted.

KEYWORDS | Flow meter, Cohesive index, Packing dynamics, Angle of repose, Electrostatics

4. APPLICATION: Correlation with industrial cases

In this last presentation, the participants will dive into practical applications. A broad range of industries will be covered such as pharmaceuticals, additive manufacturing, or food packaging, to cite a few. We will highlight the importance of measuring the powder properties and how these properties can be related to industrial process optimization (tableting, recoating, packaging, etc).

KEYWORDS | Process optimization, Pharmaceuticals, Additive manufacturing, Food

During this training, lots of characterization results will be shared with the participants to illustrate the lectures.

Registration for this event is now closed.