DIDACTA Italia S.r.l. - Strada del Cascinotto, 139/30 - 10156 Torino - Italy
Tel. +39 011 2731708 - Fax +39 011 2733088 - http://www.didacta.it - E-mail: info@didacta.it
HYDRAULICS
H65D - Osborne Reynolds Apparatus - Code 935700
1. General
H65D has been designed to study the turbulent and transient laminar flows behaviour through a transparent calibrated tube
into which a coloured solution is injected.
It is analytically shown that the physic meaning of the Reynolds’ number is represented by the inertia ratio measure of the
viscose forces which act on a fluid.
So the students can visualize the difference between laminar and turbulent flow correspondento to a Reynolds’number.
The unit is supplied together with an installation and operating manual with theoretical remarks on fluid mechanics.
2. Composition
The unit is composed of:
test tube, 900 mm length, 12 mm internal dia.
max test flow rate: 150 l/h with water at 15°C
feeding cylindrical tank
ink injection needle
ink feeding tank
ink adjustment valve
flowmeter
stilling
beads
Page
2
3. Description
The test flow is supplied by means of a ring diffuser into a feeding cylindrical tank and from there into a vertical test tube.
The coloured solution is carried into the test section through a small diameter tube.
The fluid flow is adjusted by means of a valve located at the base of the unit and its value is measured by means of a flow-
meter.
4. Experiments
Experimental
determination
of the critical speed.
Study of laminar and turbulent flows and their transient phenomena.
Reynolds’ number research.
5. Required services
Water feeding from mains
6. Weights and dimensions
Dimensions: 600 x 600 x 1950 h mm
Weight: 30 kg
Fig. 1 – General Synoptic
A. Bell
support
B. Feeding cylindrical tank
C. Feeding
diffuser
D. Conveyor
E. Colour injection needle
F. Colour feeding tank
G. Cover
H. Ink adjustment valve
I.
Needle adjustment screw
J. Flowmeter
K. Flow adjustment valve
L. Bubble
level
M. Stilling beads
N. Levelling
feet
O. Hoffman’s
clamps
P. Feeding
tube
Q. Discharge
tube
R. Drainage
tube
S. Overflow
tube
In any time and without notice, Didacta Italia can carry out any appropriate modification on the product details, always
maintaining their main features, according to the designing and teaching necessity.
Cod. R00252/E 0213 Ed. 01 Rev. 03
In any time and without notice, Didacta Italia can carry out any appropriate modification on the product details, always
maintaining their main features, according to the designing and teaching necessity.
Cod. R00252/E 0213 Ed. 01 Rev. 03