INVESTIGASI NUMERIK TERHADAP MEDAN ALIRAN SIPHONIC ROOF OUTLET TIPE NON-BOWL LAMINAR FLOW (NOFMIF)

*Wahyu Prayogo  -  Department of Mechanical Engineering, Universitas Diponegoro, Jl. Prof. Sudarto, SH, Tembalang, Semarang, Indonesia 50275, Indonesia
Syaiful Syaiful  -  Department of Mechanical Engineering, Universitas Diponegoro, Jl. Prof. Sudarto, SH, Tembalang, Semarang, Indonesia 50275, Indonesia
Muchammad Muchammad  -  Department of Mechanical Engineering, Universitas Diponegoro, Jl. Prof. Sudarto, SH, Tembalang, Semarang, Indonesia 50275, Indonesia

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Abstract

Penggunaan siphonic pada sistem drainase air hujan pada gedung-gedung besar berguna untuk meningkatkan laju debit aliran dan berfungsi untuk mengurangi intensitas turbulensi aliran fluida. Studi ini difokuskan pada simulasi numerik aliran melalui siphonic pada downpipe sistem drainase. Dalam studi numerik ini, siphonic roof outlet (SRO) tipe Non-bowl Fin Laminar Flow (NOFMIF) dengan baffle plate concave dipasang pada base plate pipa downpipe. Analisis medan aliran pada siphonic outlet tipe NOFMIF dilakukan pada multiphase model dengan variasi fraksi udara 0% sampai 30%. Hasilnya menunjukkan bahwa peningkatan prosentase udara pada system siphonic menyebabkan berturut-turut penurunan tingkat laju aliran dan negative pressure 0,02% dan 0,079% pada setiap kenaikan 5% udara. Peningkatan prosentase udara juga menyebabkan penurunan intensitas turbulen 0,048% pada setiap kenaikan 5% udara. Pola aliran pada SRO memperlihatkan fenomena dimana terjadi konsentrasi fraksi udara di bawah baffle plate berbentuk concave-rectangular.

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Keywords: Baffle plate; Fin; Laminar flow; Non-bowl; NOFMIF; Siphonic roof outlet; Sistem Siphonic; TKE
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  1. P. Sommerhein, “Design Parameterfor Roof Drainage Systems,” Water Supply and Drainage for Buildings CIB W62, International Council for Building Research, 1999
  2. R. W. P. May and M. Escarameia, “Performance of Siphonic Drainage Systems for Roof Gutters,” Wallingford, UK, 1996
  3. S. Arthur and G. B. Wright, “Recent and future advances in roof drainage design and performance,” Building Services Engineering Research and Technology, vol. 26, no. 4, pp. 337–348, 2005, doi: 10.1191/0143624405bt127tn
  4. S. Beecham and T. Lucke, “Air water flows in building drainage systems,” Urban Water J, vol. 12, no. 6, pp. 455–467, Aug. 2015, doi: 10.1080/1573062X.2013.820335
  5. Bramhall Martyn A, “The Performance of Syphonic Rainwater Outlets within Gutters,” Sheffild, England, 2005. [Online]. Available: www.bl.uk
  6. G. Wright, J. Swaffield, and S. Arthur, “The performance characteristics of multi-outlet siphonic roof drainage systems,” Building Services Engineering Research and Technology, vol. 23, no. 3, pp. 127–141, Oct. 2002, doi: 10.1191/0143624402br041oa
  7. S. Arthur, B. Eng, J. A. Swaffield, B. Mphil, P. Mraes, and F. Mcibse, “Numerical modelling of the priming of a siphonic rainwater drainage system,” CIBSE Building Services Engineering Research and Technology, vol. 20, no. 2, pp. 83–91, 1999
  8. T. Lucke and S. Beecham, “Capacity loss in siphonic roof drainage systems due to aeration,” Building Research and Information, vol. 38, no. 2, pp. 206–217, Mar. 2010, doi: 10.1080/09613210903236631
  9. S. Arthur and G. B. Wright, “Recent and future advances in roof drainage design and performance,” Building Services Engineering Research and Technology, vol. 26, no. 4, pp. 337–348, 2005, doi: 10.1191/0143624405bt127tn
  10. S. Arthur and J. A. Swaffield, “Siphonic roof drainage: current understanding,” Urban Water, vol. 3, pp. 43–52, 2001
  11. S. Arthur and J. A. Swaaeld, “Siphonic roof drainage system analysis utilising unsteady yow theory,” Build Environ, vol. 36, pp. 939–948, 2001
  12. T. Lucke and S. Beecham, “Aeration and gutter water levels in siphonic roof drainage systems,” Building Research and Information, vol. 38, no. 6, pp. 670–685, Sep. 2010, doi: 10.1080/09613218.2010.503050
  13. M. Buitenhuis, “Flow Phenomena of a Siphonic Roof Outlet,” Proceedings of Water Supply and Drainage for Buildings CIB W062, 2011
  14. Y. Bi, H. Bi, H. Wang, Y. Zhou, R. Wan, and Y. Xie, “Experimental and numerical study on operational characteristics of a single outlet siphonic drainage system in large public buildings,” Physics of Fluids, vol. 35, no. 2, Feb. 2023, doi: 10.1063/5.0132041
  15. J. A. Slater, G. Cockerham, and P. D. Williams, “Loss Factors in Syphonic Roof Drainage,” Water Supply and Drainage for Buildings CIB W62, 1999
  16. A. Öngören and R. Materna, “Multi-phase flow characteristics of a siphonic roof drainage system under part load conditions,” CIB W062 Symposium, International Council for Building Research, 2006
  17. I. B. Celik, U. Ghia, P. J. Roache, C. J. Freitas, H. Coleman, and P. E. Raad, “Procedure for estimation and reporting of uncertainty due to discretization in CFD applications,” Journal of Fluids Engineering, Transactions of the ASME, vol. 130, no. 7, pp. 0780011–0780014, Jul. 2008, doi: 10.1115/1.2960953

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