In dilute-phase horizontal pneumatic conveying, the 'saltation velocity' represents the minimum gas velocity below which:
Options:
(A) Suspended solid particles begin to drop out of suspension and deposit along the bottom of the horizontal pipe
(B) The pipe immediately explodes due to extreme static pressure
(C) All solid particles undergo instantaneous thermal pyrolysis
(D) Airflow becomes completely supersonic
Answer Key:
A
Step-by-Step Solution & Explanation
Saltation velocity is the boundary threshold in horizontal pneumatic conveying below which aerodynamic lift forces fail to keep particles airborne, causing them to drop out of suspension and form rolling dunes along the pipe bottom.