quick overview :

Fluid Friction Measurement

Instructional Capabilities The device experiences the relationship between pipe friction coefficients and Reynolds' number for flow. By using standard pipe fittings this device can determine the head loss associated with flow.   An arrangement of six pipes provides facilities for testing the following: > 4 smooth-bore pipes of different diameters > artificially roughened pipe > 900 bends(large & small radii) > 900 elbow > 900 mitre > 450 elbow > 450 Y > 900 T > sudden enlargement > sudden contraction .gate valve > globe valve > ball valve > inline strainer > Perspex Venturi > Perspex orifice meter > Perspex pipe section with a Pitot tube & static tapping

Short samples of each size test pipe are provided loose so that the students can measure the exact diameter and determine the nature of the internal finish. The ratio of the pipe diameter to the distance of the pressure tappings from the ends of each pipe has been selected to minimise end and entry effects. A system of isolating valves is provided whereby the pipe to be tested can be selected without disconnecting or draining the system. The arrangement allows tests to be conducted on parallel pipe configurations.

An optional floor standing hydraulics bench incorporates a sump tank and volumetric flow measurement facility. Rapid and accurate flow measurement is possible over the full working range of the apparatus. The level rise in the measuring tank is determined by an independant sight gauge. A 250ml capacity glass measuring cylinder is supplied for measuring the flow rate under laminar conditions (very low flows).

Each pressure tapping is fitted with quick action self-sealing connections. Probe attachments with an adequate quantity of translucent polythene tubing are provided so that any pair of pressure tappings can be rapidly connected.

Technical Details Test pipes: Diameter: 1. 19.1mm O.D. x 17.2mm I.D. 2. 12.7mm O.D. x 10.9mm I.D. 3. 9.5mm O.D. x 7.7mm I.D. 4. 6.4mm O.D. x 4.5mm I.D. 5. 19.1mm O.D. x 15.2mm I.D. (Roughene)