College of Engineering

      The aim of this research is to find general empirical equations for predicting drag coefficient and settling velocity (for polymeric system of Car boxy Methyl cellulose CMC and Hydroxyl Ethel cellulose HEC as non-Newtonian fluids and water as Newtonian fluid), and to compare these equations with the other equations in literatures to show the accuracy of the developed equations.Empirical equation was found to relate drag coefficient C and Reynolds number Rep for a wide range of Repd from 0.001 to 10000 and for spherical and irregular shaped particles for Newtonian and non-Newtonian flu

   The distillation column is one of the essential separation processes in modern chemical and petrochemical industries so simulation of dynamic and control of distillation column was conducted in this work. For the control system, the important controlled variables were chosen to be the distillate composition (X_D), and the side stream composition (X_S).

This work aims to study the influence of some additives on the properties of soap greases, such as lithium, calcium, sodium, lithium-calcium by adding first: additives including graphite,molybdenum disulfide, carbon black, corrosion inhibiter and extreme pressure, second: base stock oils 40, 60, 150.Various additives have been added to greases to obtain the best percentages that improve the properties of grease such as load carrying, wear resistance, corrosion resistance,drop point and penetration.The result showed the best weight percentages to all types of gre