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http://dx.doi.org/10.21729/ksds.2021.14.1.1

Numerical Study on the Effect of a Groove of D-type on Internal Flow and Pressure Drop in a Corrugated Pipe  

Hong, Ki Bea (Dept. of Mechanical Automotive Aeronautical Engineering, Korea National University of Transportation)
Kim, Dong Woo (Dept. of Mechanical System Engineering, Chung-Ang Univ.)
Ryou, Hong Sun (Dept. of Mechanical Engineering, Chung-Ang Univ.)
Publication Information
Journal of Korean Society of Disaster and Security / v.14, no.1, 2021 , pp. 1-8 More about this Journal
Abstract
A corrugated pipe is widely used in firefighting equipment and sprinkler pipes because of its elasticity, which is less damaged by deformation and convenient facilities. However, the corrugated shape of the wall results in complex internal turbulent flow, and it is difficult to predict the pressure drop, which is an important design factor for pipe flow. The pressure drop in the corrugated tube is a function of the shape factors of the pipe wall, such as groove height, length, and pitch. Existing studies have only shown a study of pressure drop due to length changes in the case of D-shaped tubes with less than 5 pitch (P) and height (K) of the rectangular grooves in the tube. In this work, we conduct a numerical study of pressure drop for P/Ks with length and height changes of 2.8, 3.5 and 4.67 with Re Numbers of 55,000, 70,000 and 85,000. The pressure drop in the corrugated tube was interpreted to decrease with smaller P/K. We show that the pressure drop is affected by the change in the groove aspect ratio, and the increase in the height of the groove increases the recirculation area, and the larger the Reynolds number, the greater the pressure drop.
Keywords
Corrugated pipe; Groove hight; Pressure drop; Pipe flow; Reynolds number;
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  • Reference
1 Munson, B. R., Young, D. F., and Okiishi, T. H. (2009). Fundamentals of Fluids Mechanics. Wiley. pp. 388-406.
2 Bernhard, D. M. and Hsieh, C. K. (1996). Pressure Drop in Corrugated Pipes. Journal of Fluids Engineering. 118(2): 409-410. 10.1016/j.ecss.2008.06.006.   DOI
3 Eiamsa-ard, S., Promvong, P., and Cui, J. (2008). Numerical Study on Heat Transfer of Turbulent Channel Flow over Periodic Grooves. Flow Measurement and Instrumentation. 12(1): 1-7. 10.1016/S0955-5986(00)00033-9.   DOI
4 Perry, A., Schofield, W., and Joubert, P. (1969). Rough Wall Turbulent Boundary Layers. Journal of Fluid Mechanics. 37(2): 383-413. doi:10.1017/S0022112069000619.   DOI
5 Stel, H., Morales, R. E. M., Franco, A. T., Junqueira, S. L. M., Erthal, R. H., and Goncalves, M. A. L. (2010). Numerical and Experimental Analysis of Turbulent Flow in Corrugated Pipes. ASME. Journal of Fluids Engineering. 132(7): 071203. https://doi.org/10.1115/1.4002035.   DOI
6 Vijiapurapu, S. and Cui, J. (2007). Simulation of Turbulent Flow in A Ribbed Pipe Using Large Eddy Simulation. Numerical Heat Transfer. 51(12): 1137-1165. 10.1080/10407780601112829.   DOI
7 Vijiapurapu, S. and Cui, J. (2010). Performance of Turbulence Models for Flows through Rough Pipes. Applied Mathematical Modelling. 34(6): 1458-1466. 10.1016/j.apm.2009.08.029.   DOI