Drag Co-efficient Apparatus - Application: Momentum Transfer Lab Equipments

The equipment consists of two precision glass tubes 1.5 m long and 93 mm inside diameter fixed vertically on a wall-mounted backboard. A guide is provided at the top of each tube to facilitate the introduction of particles with the minimum of disturbance to the liquid.
A sliding valve device at the bottom of each tube allows the particles to be removed with minimum loss of liquid. Observation of the particle movement is aided by a shielded fluorescent light mounted on the backboard between the glasses tubes, marks on the tubes enable the rate of fall to be timed.
In addition to the range of spheres, two streamlined shaped objects are supplied to allow comparison to be made between their drag coefficients and those of the spheres.
DEMONSTRATION CAPABILITIES:-
Measurement of drag coefficients of spheres over several decades of particle Reynolds number
Exploration of dimensional analysis and dynamic similarity
Introduction to the effects of boundary layer separation on motion of spheres
Effect of particle shape on rate of fall and on drag coefficient
TECHNICAL SPECIFICATIONS:-
Compact wall mounted apparatus to study the behavior of particles and shapes within fluids
Two transparent vertical glass tubes, back lit bya fluorescent lamp for ease of viewing
Tube sizes 93mm inside diameter by 1.5m long, with calibration marks for timing
Guide to aid the insertion of particles at the top of the tubes
Sliding valves to aid the removal of particles from the bottom of the tubes
The equipment is supplied with sets of spheres of different sizes and materials, plus two streamlined shapes