Influence of Nonionic Surfactant Addition on Drag Reduction of Water Based Nanofluid in a Small Diameter Pipe

2013 ◽  
Vol 21 (1) ◽  
pp. 104-108 ◽  
Author(s):  
Michal Drzazga ◽  
Andrzej Gierczycki ◽  
Grzegorz Dzido ◽  
Marcin Lemanowicz
Keyword(s):  
Drag Reduction ◽  
Nonionic Surfactant ◽  
Small Diameter ◽  
Diameter Pipe ◽  
Water Based

scholarly journals Residual Stress Improvement on Inside Wall of Small-Diameter Pipe by Underwater Laser Ablation

2002 ◽  
Vol 122 (1) ◽  
pp. 156-162 ◽  
Author(s):  
Yuji Sano ◽  
Masaki Yoda ◽  
Naruhiko Mukai ◽  
Mitsuaki Shimamura ◽  
Yoshiaki Ono ◽  
...  
Keyword(s):  
Residual Stress ◽  
Laser Ablation ◽  
Small Diameter ◽  
Diameter Pipe ◽  
Underwater Laser ◽  
Inside Wall

scholarly journals Effects of Degradation on Drag Reduction in Turbulent Pipe Flow of Nonionic Surfactant Aqueous Solutions

2012 ◽  
Vol 40 (2) ◽  
pp. 69-77 ◽  
Author(s):  
Shinji Tamano ◽  
Kotaro Miyagawa ◽  
Yohei Morinishi ◽  
Motoyuki Itoh ◽  
Keijiro Taga
Keyword(s):  
Aqueous Solutions ◽  
Drag Reduction ◽  
Nonionic Surfactant ◽  
Pipe Flow ◽  
Turbulent Pipe Flow

CIVA Simulation and Experiment Verification for Thin-Walled Small-Diameter Pipes by Using Phased Array Ultrasonic Testing

2020 ◽  
Author(s):  
Jun Si ◽  
Daoxiang Wei ◽  
Yuqing Yang ◽  
Xiaoying Tang
Keyword(s):  
Phased Array ◽  
Small Diameter ◽  
Radiographic Testing ◽  
Diameter Pipe ◽  
Array Probe ◽  
Experiment Verification ◽  
Simulation And Experiment ◽  
Detection Capabilities ◽  
Thin Walled ◽  
Defect Detectability

Abstract Regular inspection is important to verify the integrity of in-service pipeline in the petrochemical industry. Early detection of flaws is therefore essential to ensure the continued safe operation of pipeline. In generally, Conventional ultrasonic for thin-walled small-diameter pipes has limitations due to regulation requirements, efficiencies, lack of permanent results and repeatability. In many cases, the preferred method of inspection is radiographic testing, however there are many obvious shortcomings for radiographic detection. The aim of this work was to propose appropriate phased array ultrasonic scan plans that were able to achieve the following: reduce the inspection times, improve defect detectability and sizing, and reduce human intervention, which will reduce workforce radiation uptake. Ultrasonic simulation using CIVA and experimental verification for thin-walled small-diameter pipe with flaws that were carried out to determine the most appropriate phased array probe and its detection capabilities in this paper.

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