The concept of drag reduction allows the pipelines to be operated at a lower pressure drop, thus reducing energy consumption and costs while transporting fluids through onshore and offshore pipelines, channels, cooling and heating devices, etc. The objective of drag reduction study is to find a suitable means to reduce the physical force or drag that resists the movement of fluids through transporting media. Drag is identified through pressure drop measurement in piping system. The addition of a small amount of certain chemical additives in transporting system could reduce the drag. These...

Pumping power dissipation during the transportation of liquids in strategic pipelines, was and still one of the most power consuming sectors in the industry due to the turbulent mode these liquids are transported with. The addition of minute quantities of polymeric additives to the liquids flowing in the pipe helped in improving the flow, but it also changes the apparent physical properties of the transported liquid. The solubility of any material in the transported media was a concrete condition to introduce it as drag reducing agent. In the present Book, insoluble drag reducing agents are...