An Experimental Study of Pressure Variation in Pipe Flow according to Residual Air Condition 


Vol. 37,  No. 4, pp. 113-119, Aug.  2022
10.14346/JKOSOS.2022.37.4.113


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  Abstract

Sudden intrusion of a large amount of surface water into a flood defensive tunnel or pipeline system can compress the residual air. The compressed air may explode along with water through the inlet or air vent, resulting in hydraulic capacity degradation or safety hazards. This study aims to investigate the behavior of compressed air body in pipelines according to the residual air condition with a series of laboratory experiments measuring pressure variation. It has been found that flow characteristics and residual air conditions have a dominant influence on the magnitude and periodicity of the pressure variation. A proper measure to effectively control the residual air is required for securing the design capacity of flood defensive pipeline systems, since the peak pressure is predominantly affected by residual air conditions.

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  Cite this article

[IEEE Style]

박재곤, 이경수, 고주석, 류시완, "An Experimental Study of Pressure Variation in Pipe Flow according to Residual Air Condition," Journal of the Korean Society of Safety, vol. 37, no. 4, pp. 113-119, 2022. DOI: 10.14346/JKOSOS.2022.37.4.113.

[ACM Style]

박재곤, 이경수, 고주석, and 류시완. 2022. An Experimental Study of Pressure Variation in Pipe Flow according to Residual Air Condition. Journal of the Korean Society of Safety, 37, 4, (2022), 113-119. DOI: 10.14346/JKOSOS.2022.37.4.113.

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