The Effect of Triangle Slope Variation on Froude Number with Numerical Simulation

Mukhsan Putra Hatta, Ira Widyastuti, Andi Muh. M. Makkarumpa’

Abstract


Many parameters can be influenced by speed flow, like form resistance and speed flow. Form obstacles influence structure turbulent flowing water, so that can raise potency change speed and pattern flow around the structure building. This study considers the tilted corner prisoner structure triangle and incoming water flow to influence the pattern and speed flow that occur after the genre through the obstacle triangle using IRic simulation. IRIC is a simulation platform that supports numeric and various breaker computing problems in water science and engineering. The variations of the corner prisoner plate triangle used in this study are 30°, 45°, and 60°. The transverse channel is blocked with a ratio of β = 1/10, and upstream-downstream boundary conditions are open. Results show what will happen in the genre critical moment pass structure. Because the change is significant, Froude's number. Observations that took place showed that speed flow on each slope was stable before the pass structure and was not stable after the pass structure. Whirlpools occur on a45° slope, so the speed flow that occurs will increase significantly. On an incline of60°, it will have the largest Froude number, which is caused by the depth (D)created by the 60°angle being higher in comparison with another slope. For an incline of30°, show speed, more flow, and a constant flow with a bigger Froude number.

 

Doi: 10.28991/CEJ-2023-09-12-012

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Keywords


Triangular Obstacles; Froude's Number; Slope; Flow Speed.

References


Toniolo, H., Parker, G., Voller, V., & Beaubouef, R. T. (2006). Depositional turbidity currents in Diapiric Minibasins on the continental slope: Experiments - Numerical simulation and upscaling. Journal of Sedimentary Research, 76(5–6), 798–818. doi:10.2110/jsr.2006.072.

Widyastuti, I., Thaha, M. A., Lopa, R. T., & Hatta, M. P. (2022). Dam-Break Energy of Porous Structure for Scour Countermeasure at Bridge Abutment. Civil Engineering Journal (Iran), 8(12), 3939–3951. doi:10.28991/CEJ-2022-08-12-019.

Feizi, A. (2018). Hydrodynamic Study of the Flows Caused by Dam Break around Downstream Obstacles. The Open Civil Engineering Journal, 12(1), 225–238. doi:10.2174/1874149501812010225.

Lu, X., Peng, X., & Du, S. (2020). Research on Construct Scenario-Response Emergency Model of Dam Break. Journal of Physics: Conference Series, 1626, 012037. doi:10.1088/1742-6596/1626/1/012037.

Yaghoubi, S., Afshin, H., Firoozabadi, B., & Farizan, A. (2017). Experimental Investigation of the Effect of Inlet Concentration on the Behavior of Turbidity Currents in the Presence of Two Consecutive Obstacles. Journal of Waterway, Port, Coastal, and Ocean Engineering, 143(2), 4016018. doi:10.1061/(asce)ww.1943-5460.0000358.

Yagmur, S., Dogan, S., Aksoy, M. H., Goktepeli, I., & Ozgoren, M. (2017). Comparison of flow characteristics around an equilateral triangular cylinder via PIV and Large Eddy Simulation methods. Flow Measurement and Instrumentation, 55(April), 23–36. doi:10.1016/j.flowmeasinst.2017.04.001.

Altinakar, S., Graf, W. H., & Hopfinger, E. J. (1990). Effet de la sedimentation sur les courants de turbidité dans un lit a faible pente. Journal of Hydraulic Research, 28(1), 55–80. doi:10.1080/00221689009499147.

Ali, M. S., Hasan, M. M., & Haque, M. (2017). Two-Dimensional Simulation of Flows in an Open Channel with Groin-Like Structures by iRIC Nays2DH. Mathematical Problems in Engineering, 2017. doi:10.1155/2017/1275498.

Ali, M. S., Hosoda, T., & Kimura, I. (2015). Development of a Nonlinear k - ε Model Incorporating Strain and Rotation Parameters for Prediction of Complex Turbulent Flows. International Journal of Partial Differential Equations, 2015, 1–15. doi:10.1155/2015/105809.

Reunsumrit, J. (2013). The lattice boltzmann method for investigating the fluid flow pattern in 2D channel through triangle obstacle. Applied Mathematical Sciences, 7(65–68), 3215–3223. doi:10.12988/ams.2013.34225.

Takebayashi, H., & Shimizu, Y. (2014). iRIC software Nays2DH solver manual. iRIC software, Reston, United States.

Khavasi, E., Jamshidnia, H., Firoozabadi, B., & Afshin, H. (2012). Experimental investigation of flow structure of a density current encountering a basal obstacle Experimental investigation of flow structure of a density current encountering a basal obstacle. Proceedings of the 8th International Symposium on Ultrasonic Doppler Methods for Fluid Mechanics and Fluid Engineering, 1-21 September, 2012, Dresden, Germany.

Huang, Z. J., Xu, T. B., Zhu, D. Z., & Zhang, S. D. (2023). Simulation of open channel flows by an explicit incompressible mesh-free method. Journal of Hydrodynamics, 35(2), 287-298. doi:10.1007/s42241-023-0020-4.

Wu, Y., Wang, D., Li, P., & Niu, Z. (2023). Experimental investigation of dry granular flows down an inclined channel against a wall-like obstacle of limited width. Acta Geotechnica, 18(4), 2141-2154. doi:10.1007/s11440-022-01714-2.

Dissanayaka, K. D. C. R., & Tanaka, N. (2023). Scour around the single emergent cylinder due to subcritical and supercritical approach flow conditions. ISH Journal of Hydraulic Engineering, 1-16. doi:10.1080/09715010.2023.2212632.

Widyastuti, I., Thaha, M. A., Lopa, R. T., & Hatta, M. P. (2021). The influence of energy-reducing structure placement on friction velocity distribution in open channel. IOP Conference Series: Earth and Environmental Science, 841, 012019. doi:10.1088/1755-1315/841/1/012019.


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DOI: 10.28991/CEJ-2023-09-12-012

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