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HM 135 Drag Coefficients for Spheres
Education / GUNT Hamburg / Fluid Mechanics and Hydrology / Fundamentals of Fluid Mechanics /


 Two Plexiglass cylinders are provided for performing the experiment, these are filled with fluids of varying viscosity. A ball sinks to the bottom under the action of gravity. The sink time and distance are measured. Included with the unit are a stopwatch and 10 spheres of different materials and volumes. At the bottom of the measuring tube is a chamber through which the balls can be removed without major loss of fluid.

Learning Objectives / Experiments
· Determination of the vertical descend of various bodies in a flow
· Determination of the viscosity of the liquids used
· Comparative measurements
[1] Experimental set-up for determining the vertical descend of a body in a flow
[2] 2 Plexiglass tubes as measuring sections, sink heights marked with O-rings, with chamber for easy removal of the measuring objects
[3] 10 balls of different materials and volumes
[4] Stopwatch included
Technical Data
Plexiglass cylinder 1330mm, od 100mm , approx. 8Ltr
Sink height: 1000mm
d=10mm: aluminium, POM, nylon
d=5mm: aluminium, POM, nylon
Dimensions and Weight
l x w x h : 720 x 640 x 1650 mm
Weight : approx. 45 kg
Scope of Delivery
1 panel with measuring cylinders, 1 stopwatch, 1 set of balls, 1 instruction manual
Order Details
070.13500 HM 135 Drag Coefficients for Spheres