AN EXPERIMENTAL INVESTIGATION FOR WATER FLOW ENHANCEMENT IN HORIZONTAL PIPES BY USING NANOPARTICLES

  • Hashim A. Hussein
Keywords: Fluid dynamics, Turbulent& laminar flow, Drag reduction, Nanofluids, Friction factor

Abstract

This work has been devoted to investigate experimentally, the increase in range of horizontal
discharge distance and velocity of water flow for pipes of fire-hoses and water jet propulsion
systems in small ships. The enhancement method of water flow depends on increase the drag
reduction and best uniform flow. One of the important practice techniques is adding a small
amount of some materials, cheap and locally available added into water flow in a horizontal
pipe. A simple experimental system is designed and constructed to investigate the increase in
drag reduction. Nanoparticles (aluminum oxide – 30 nm diameters) and polyacrylamide (PAM)
have been added alone and gain time together. Experimental calculations of average flow
velocity, Reynolds number, and friction factor and percentage drag reduction are
experimentally calculated under water heads of 75,100, 125,150,175 and 200 cm. The effects
of concentration ratios of nanofluid (AL
2
O
3
) on friction factor and drag reduction are studied
and calculated. The present results showed that addition of AL
2
90
O
3
and PAM are caused
reducing in friction factor, increase in range of horizontal discharge distance and the velocity
of water flow. Also the results indicated that, drag reduction was 26% increased at addition of
AL
2
O
3
and 39% at PAM while at mixing them together was 52 % as average for six heads
were chosen. The results are represented graphically to explain the degrees of enhancement of
increasing in drag reduction, flow velocity and the range of discharge distance for water in
horizontal pipes. The originality of this work was addition materials of nanopartcles with
polyacrylamide together.
Published
2019-04-18
Section
Articles