Analisis Pengaruh Penambahan Passive Grid Terhadap Turbulensi pada Wind Tunnel Skala Kecil
Passive Grid Addition Effect on Turbulence Analysis in a Small-Scale Wind Tunnel
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Abstract
One of the problems encountered by a laboratory with a small-scale wind tunnel facility is that the wind tunnel can only produce limited wind speed to simulate fluid behavior that passes through a tested object. This problem caused the laboratory to be unable to analyze fluid behavior that passed through a tested object. In that case, scale modeling to analyze fluid behavior at a certain speed without having to reach the actual speed is needed. The purpose of this research is to prove the passive grid addition effect on turbulence in a small-scale wind tunnel. The test is done by capturing smoke movement through the test section with and without a grid. Then analyze the collected data with SynthEyes software. The wind speed variation used in this research is between 0.5 and 6.0 m/s. The result of this research is that the smoke flow characteristic in a wind tunnel without a grid tends to be laminar flow, and the smoke flow in a wind tunnel with a grid tends to be turbulence flow. Smoke flow characteristics with a grid are still too far from smoke flow characteristics without a grid with the highest speed variation.
References
Alfahma, F.A., Erwin dan Wiyono, S. (2022) ‘Performance Investigation of Low-Speed Wind Tunnel: Stability Wind Speed in Test Section’, in Conference on Broad Exposure to Science and Technology 2021 (BEST 2021). Conference on Broad Exposure to Science and Technology 2021 (BEST 2021), Atlantis Press, hal. 439–443.
Anderson, J.D. (2017) Fundamentals of Aerodynamics. Sixth edition. New York, NY: McGraw Hill Education (McGraw-Hill series in aeronautical and aerospace engineering) [Cetak].
Barlow, J.B., Rae, W.H. dan Pope, A. (1999) Low-speed wind tunnel testing. 3rd ed. New York: Wiley [Cetak].
Bontas, O. dkk. (2013) ‘Behaviour of solid particles on a flat oscillating surface’, Environmental engineering and management journal, 12(1), hal. 17–22.
Erwin, Hidayat, W.N. dan Wiyono, S. (2022) ‘Low Wind Speed Wind Tunnel Performance Test: Uniformity Wind Speed in Test Section’, in Advances in Engineering Research. Conference on Broad Exposure to Science and Technology 2021 (BEST 2021), Atlantis Press, hal. 449–452.
Landahl, M.T. dan Mollo-Christensen, E. (1992) Turbulence and Random Processes in Fluid Mechanics. 2nd edn. Cambridge: Cambridge University Press.
Laneville, A. (1973) Effects of turbulence on wind induced vibrations of bluff cylinders. PhD Thesis. University of British Columbia.
Loganathan, B. dkk. (2017) ‘Effect of turbulence on a Savonius type micro wind turbine’, Energy Procedia, 110, hal. 549–554.
Molina, A.C. dkk. (2019) ‘Effect of turbulence on the performance of VAWTs: An experimental study in two different wind tunnels’, Journal of Wind Engineering and Industrial Aerodynamics, 193,hal. 103969–103982.
Mukhlisin, A., Erwin, E. dan Wiyono, S. (2022) ‘Rancang Bangun Smoke Generator pada Kecepatan Angin Rendah dengan Wind Tunnel Rangkaian Terbuka’, Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi, 4(1), hal. 81–88.
Nakamura, Y., Ohya, Y. dan Ozono, S. (1988) ‘The effects of turbulence on bluff-body mean flow’, Journal of Wind Engineering and Industrial Aerodynamics, 28(1), pp. 251–259.
Roach, P.E. (1987) ‘The generation of nearly isotropic turbulence by means of grids’, International Journal of Heat and Fluid Flow, 8(2), hal. 82–92.
Vita, G. (2016) Generating turbulence in Wind tunnel experiments: use of passive grids. Short-Term Scientific Mission. United Kingdom: University of Birmingham, hal. 1–14.
Vita, G. dkk. (2018) ‘Generating atmospheric turbulence using passive grids in an expansion test section of a wind tunnel’, Journal of Wind Engineering and Industrial Aerodynamics, 178, hal. 91–104.
