DRAG CO-EFFICIENT APPARATUS

Product Description

The equipment consists of twoprecision glass tubes 1.5 m long and 93 mm inside diameter fixed vertically ona wall-mounted backboard. A guide is provided at the top of each tube tofacilitate the introduction of particles with the minimum of disturbance to theliquid.

A sliding valve device at thebottom of each tube allows the particles to be removed with minimum loss ofliquid. Observation of the particle movement is aided by a shielded fluorescentlight mounted on the backboard between the glasses tubes, marks on the tubesenable the rate of fall to be timed.

In addition to the range ofspheres, two streamlined shaped objects are supplied to allow comparison to bemade between their drag coefficients and those of the spheres.

DEMONSTRATION CAPABILITIES:-

Measurement of drag coefficientsof spheres over several decades of particle Reynolds™ number

Exploration of dimensionalanalysis and dynamic similarity

Introduction to the effects ofboundary layer separation on motion of spheres

Effect of particle shape on rateof fall and on drag coefficient

TECHNICAL SPECIFICATIONS:-

Compact wall mounted apparatus tostudy the behavior of particles and shapes within fluids

Two transparent vertical glasstubes, back lit bya fluorescent lamp for ease of viewing

Tube sizes 93mm inside diameterby 1.5m long, with calibration marks for timing

Guide to aid the insertion ofparticles at the top of the tubes

Sliding valves to aid the removalof particles from the bottom of the tubes

The equipment is supplied withsets of spheres of different sizes and materials, plus two streamlined shapes