The Effect of Passive-Active Interaction Method on Drag Reduction Performance in Rotating Disk Apparatus
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 b...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Informatics Publishing Limited
2017
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| Subjects: | |
| Online Access: | http://umpir.ump.edu.my/id/eprint/17118/ http://umpir.ump.edu.my/id/eprint/17118/ http://umpir.ump.edu.my/id/eprint/17118/ http://umpir.ump.edu.my/id/eprint/17118/1/The%20Effect%20of%20Passive-Active%20Interaction%20Method.pdf |
| Summary: | 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. |
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