M.Sc.

EFFECT OF PIPE DIAMETER ON TURBULENT DRAG REDUCTION

The present work is an attempt for gaining some experimental data to investigate the effect of pipe diameter and roughness on drag reduction properties. Experiments were carried out in galvanized steel pipes whose nominal diameters were 12.7, 19.05, 31.75 and 50.8 mm (0.5, 0.75, 1.25 and 2 inches) respectively and in smooth polyvinyl chloride (PVC) pipe with 19.05 mm diameter.

English

THE THEORETICAL ANALYSIS OF GALVANIC CORROSION (Zn, Fe and Cu) UNDER ACTIVATION CONTROL

 For the increasing importance of corrosion in all branches of recent life, a study on behavior of widely industrial metals (zinc, iron and copper) in deaerated hydrochloric acid is presented in this thesis. This work was developed to predict the corrosion rate and corrosion potentials of binary and ternary metal system to investigate and discuss the effect of temperature, concentration and area fraction of metals on the corrosion rate and corrosion potential. Metals used were iron, copper and zinc.

English