3D numerical simulation of flow field around twin piles

• Autorzy: Amini A. , Parto A. A.

Identyfikatory

DOI

10.1007/s11600-017-0094-x

• Języki publikacji: EN

Abstrakty

EN

In this study to identify the flow pattern and local scour mechanism around pile groups, the flow field was simulated using FLOW-3D software. A pair of pile on a flat-bed channel with side by side and tandem arrangements was investigated. To establish Navier–Stokes equations, the RNGk-ε turbulence model was used and the results were verified using experimental data. In case of FLOW-3D capability, it was found that the software was able to properly simulate the expected interaction between the pile groups. The results of flow field simulation showed that Reynolds number and the pile spacing are the most influential variables in forming vortices. The flow around tandem pile and the downward flow around wake vortices were more intense and complicate in comparison with side by side arrangements and single pile.

Słowa kluczowe

EN

bridge; sediment; flow pattern; pile group; local scour

PL

most; osad

• Wydawca: Instytut Geofizyki PAN ; Springer
• Czasopismo: Acta Geophysica
• Rocznik: 2017
• Tom: Vol. 65, no. 6
• Strony: 1243--1251
• Opis fizyczny: Bibliogr. 22 poz.

Twórcy

autor

Amini A.

• Kurdistan Agricultural and Natural Resources Research and Education Center, AREEO, Sanandaj, Iran

autor

Parto A. A.

• Department of Civil Engineering, Faculty of Engineering, Razi University, Kermansha, Iran

Bibliografia

• 1. Akilli AA, Karakus C (2004) Flow characteristics of circular cylinders arranged side-by- side in shallow water. Flow Meas Instrum 15(4):187–189
• 2. Amini A, Mohammad TM (2017) Local scour prediction in complex pier. Mar Georesour Geotechnol 35(6):857–864
• 3. Amini A, Melville B, Thamer M, Halim G (2012) Clearwater local scour around pile groups in shallow-water flow. J Hydraul Eng (ASCE) 138(2):177–185
• 4. Amini A, Mohd TA, Ghazali H, Bujang H, Azlan A (2011) A local scour prediction method for pile cap in complex piers. ICE-water Manag. 164(2):73–80
• 5. Aslani A (2008) Experimental evaluation of flow pattern around double piles. MSc thesis, Sharif University, Tehran
• 6. Gu ZF, Sun TF (1999) On interference between two circular cylinders in staged arrangement at high sub-critical Reynolds numbers. J Wind Eng Ind Aerodyn 80:287–309
• 7. Hang-Wook P, Hyun P, Yang-Ki C (2014) Evaluation of the applicability of pier local scour formulae using laboratory and field data. Mar Georesour Geotechnol. https://doi.org/10.1080/1064119X.2014.954658
• 8. Hannah CR (1978) Scour at pile groups. Research Rep. No. 78-3, Civil Engineering, Univ. of Canterbury, Christchurch
• 9. Hosseini R, Amini A (2015) Scour depth estimation methods around pile groups. J Civ Eng KSCE 19(7):2144–2156
• 10. Lanca R, Fael C, Maia R, Pêgo J, Cardoso A (2013) Clear-water scour at pile groups. J Hydraul Eng. https://doi.org/10.1061/(ASCE)HY.1943-7900.0000770
• 11. Mohamed HI (2013) Numerical simulation of flow and local scour at two submerged-emergent tandem cylindrical piers. J Eng Sci 41(1):1–19
• 12. Palau-Salvador G, Stoesser T, Rodi W (2008) LES of the flow around two cylinders in tandem. J Fluids Struct 24(8):1304–1312
• 13. Papaionannou GV, Yuea DKP, Triantafylloua MS, Karniadakis GE (2008) On the effect of spacing on the vortex-induced vibrations of tandem cylinders. J Fluids Struct 24:833–854
• 14. Price SJ, Paidoussis MP (1989) The flow induced response of a single flexible cylinder in an in-line array of rigid cylinder. J Fluid Struct 3:61–82
• 15. Raudkivi AJ (1998) Loose boundary hydraulics. A. A. Balkema, Rotterdam, pp 8–28. https://doi.org/10.1080/02508069608686502
• 16. Salim MS, Cheah SC (2009) Wall y + strategy for dealing with wall-bounded turbulent flows. In: Proceedings of the international multiconference of engineers and computer scientists, vol II, IMECS, Hong Kong
• 17. Shin JH, Park HI (2010) Neural network formula for local scour at piers using field data. Mar Georesour Geotechnol 28(1):37–48
• 18. Sicilian JM, Hirt CW, Harper RP (1987) FLOW-3D. Computational modeling power for scientists and engineers. Report FSI-87-00-1. Flow Science. Los Alamos, NM
• 19. Solaimani N, Amini A, Banejad H, Taheri P (2017) The effect of pile spacing and arrangement on bed formation and scour hole dimensions in pile groups. Int J River Basin Manag 15(2):219–225
• 20. Sumer BM, Fredsøe J (2002) The mechanics of scour in the marine environment. World Scientific, Farrer Road, Singapore
• 21. Sumer B, Chua L, Cheng N, Fredsøe J (2003) Influence of turbulence on bed load sediment transport. J Hydraul Eng. https://doi.org/10.1061/(ASCE)0733-9429(2003)129:8(585)
• 22. Sun TF, Gu ZF, He DX, Zhang LL (1992) Fluctuating pressure on two circular cylinder at high Reynolds number. J Wind Eng Ind Aero. 42:577–588

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018)