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The Effect of Passive-Active Interaction Method on Drag Reduction Performance in Rotating Disk Apparatus


  • Center of Excellence for Advanced Research in Fluid Flow, University Malaysia Pahang, Gambang, Kuantan, Pahang, Malaysia
  • Department of Chemical and Environmental Engineering, Faculty of Engineering, University Putra Malaysia, UPM Serdang, Selangor, Malaysia
  • Institute of technology, Middle Technical University, Foundation of Technical Education, Baghdad,, Iraq


Objectives:Turbulent Drag Reduction (DR) efficacy of diesel fuelin a Rotating Disk Apparatus (RDA) using anionic surfactant of Sodium Lauryl Ether Sulfate (SLES) was investigated with smooth andSV-groove disks(riblets height of 900 and 3100 μm). Methods: The DR efficacy indicates how the torque is being reduced with a tiny amount of additives under a turbulent flow at a Reynolds number (Re) range of 302227 to 453341. The effects of different variables such as rotary disk type (smooth or structured), surfactant concentration, and Reynolds number were also studied. Findings: SLES shows a good ability to reduce the frictional drag forces with smooth and SV-groove of height 3100μm. In contract, there is no drag reduction can be observed by using this surfactant with SV-groove of height 900 μm. Application/Improvements: The passive-active interaction method can be used to improve petroleum liquid flow in pipelines.


Drag Reduction, Rotating Disk Apparatus, Passive-Active Interaction, Surfactant

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