Reynold Apparatus

About Reynold Apparatus

The apparatus consists of a glass tube with one end having bell mouth entrance; connected to

a constant head water tank, at the other end a valve is provided to vary the flow rate. The tank is

 of sufficient capacity to store water. A capillary tube is introduced centrally in the bell mouth for

feeding dye from a small container placed at the top of tank, through polythene tubing. By varying

 the rate of flow, the Reynolds's number is changed. This also changes the type of flow. Visual

observation of dye (Thread) will indicate the type of flow, which can be confirmed from the

Reynolds's number computed

Present set-up is self-contained water re-circulating unit, provided with a sump tank and a centrifugal

 pump etc. Flow control valve and by-pass valve are fitted in water line. Flow rate of water is measured

 with the help of measuring cylinder and stop watch.