So Parks borrowed a tool common in the welding of plastic components, which is to gently agitate the hopper so that particlesflow like water into a metering chamber.
The condition also produces severe abdominal cramping and acute inflammation of the pancreas (pancreatitis) caused by clumps of fats particles blocking capillary flow.
This air circulation pattern "compartmentalizes" the air flow into sections, thereby limiting the spread of airborne particles throughout the passenger cabin.