An Overview on Most Effective DRAs in Crude Oil Pipelines
An Overview on Most Effective DRAs in Crude Oil Pipelines

Raheeq I. Ibrahim; Manal K. Odah; Dhoha A. Shafeeq

Volume 37, 10A , October 2019, , Page 391-397

https://doi.org/10.30684/etj.37.10A.2

Abstract
  The flow of crude oil in pipelines suffers from a problem of fluid flow pressure drop and high-energy consumption for pumping especially in low temperatures environment. Flow can be ...  Read More ...
Drag Reduction Study of Xathan Gum with Polydiallyldimethylammonium Chloride (PDDAC) Solutions in Turbulent Flow
Drag Reduction Study of Xathan Gum with Polydiallyldimethylammonium Chloride (PDDAC) Solutions in Turbulent Flow

Zainab Yousif

Volume 36, 8A , August 2018, , Page 891-899

https://doi.org/10.30684/etj.336.8A.8

Abstract
  The transportation of liquids through pipelines is attributed with high-energy consumption due to the turbulent nature of their transportation. Low concentrations of polymeric additives ...  Read More ...
Experimental Study of Drag Reduction Phenomena within Pipe Flow in a Closed Circuit System Using Surfactant Additives
Experimental Study of Drag Reduction Phenomena within Pipe Flow in a Closed Circuit System Using Surfactant Additives

S. A. Alramadhni; N. J. Saleh; G. A.R. Rassol

Volume 31, Issue 18 , October 2013, , Page 1-13

https://doi.org/10.30684/etj.2013.83692

Abstract
  Pipe lines and tubes are used throughout the worlds for the economic transportation of crude oil, petroleum derivatives, gas and water. A drag reduction phenomenon within pipe flow ...  Read More ...
Effect of Riblets Geometry on Drag Reduction
Effect of Riblets Geometry on Drag Reduction

Nibras M. Mahdi; Ikhlase M. Fayed

Volume 28, Issue 22 , November 2010, , Page 6518-6535

https://doi.org/10.30684/etj.28.22.6

Abstract
  The effect of longitudinal riblet surface models (U, V and semi-Circular and U with fillet corner riblets) on the performance of unsymmetrical airfoil (NACA23015) which has been investigated ...  Read More ...