Conveying Pipelines
Visualisation of Flow Structures

Pneumatic conveying is a process of transportation of powdered and granular materials through pipeline using high pressure gas

In this whitepaper, the variations of bulk material flow structures in different bends have been studied for different modes of flow for three different particulate materials. Locations of the critical wear areas with respect to the flow modes, as well as the bulk materials properties, have been discussed. Short radius bends, long radius bends, tee bends and a barrel or "Botswana" bend have been considered.

Wear tests have been conducted using sand and alumina for short radius bends to study the wear profile in the critical wear area and the wear mechanisms involved. The pipeline wall thickness loss has also been measured using an ultra sonic thickness gage. Finally experimental results have been compared with the output of an energy based predictive model and the associated variations have been discussed.

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