Particle Drag Coefficients Apparatus (MODEL ME-FM-1262E-R)

The ARL’s 1262E apparatus has been designed to introduce students to the fundamental characteristics of the behavior of particle/fluid systems, in particular the relationship between the drag coefficients of falling particles and their Reynolds’ number value. Particles covering a range of sizes and densities are supplied.

The experiments are conducted by allowing single particles to fall through a number of different liquids contained in vertical glass tubes. Blockage effects are reduced to a minimum as the largest particle used has a projected area of only 1% of the tube cross-section.

The rate of fall of the particles is determined by timing their passage between two marks on the walls of the glass tubes.