Abstract
When the jet Reynolds number is slightly higher than the Reynolds number which a whole two-dimensional jet maintains laminar, a flapping motion causes in the jet. Before the jet generates laminar-turbulent transition, it moves asymmetrically. A numerical simulation of the two-dimensional jet was carried out to research effect of an initial disturbance on a flapping motion. When white noise is uniformly added at the slit, the disturbance does not grow. If white noise is asymmetrically added at the slit, the disturbance rapidly grows and introduces the flapping motion. The asymmetrical disturbances are selected from natural disturbances in the actually two-dimensional jets at low Reynolds number, so that the flapping motion is formed in the two-dimensional jets.
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References
H. Sato, F. Sakao, An experimental investigation of the instability of a two-dimensional jet at low Reynolds numbers. J. Fluid Mech. 20, 337–352 (1964)
A. Muramatsu, S. Namaita, The development process of a two-dimensional jet at low Reynolds numbers. J. Vis. Soc. Jpn. 30(Suppl. 2), 61–62 (2010). (in Japanese)
V.K. Garg, Spatial stability of the non-parallel Bickley jet. J. Fluid Mech. 102, 127–140 (1981)
Y. Morinishi, On space-time fully conservative higher order finite difference schemes on non-uniform staggered meshes, CFD2001 (2001), pp. 138–144. (in Japanese)
S. Takeuchi, Y. Miyake, T. Kajishima, Secondary instability of round jets by the global instability analysis. Trans. JSME (B) 68, 665, 30–37(2002). (in Japanese)
T. Yoshida, N. Kato, H. Inoue, Boundary conditions for direct numerical simulation of two-dimensional jet. Prepr. JSME 107–1, 5–6 (2010). (in Japanese)
W.G. Bickley, The plane jet. Phil. Mag. 7, 727–731 (1937)
H. Sato, The stability and transition of a two-dimensional jet. J. Fluid Mech. 7, 53–80 (1960)
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Muramatsu, A., Tsuchiya, H. (2016). An Effect of Initial Disturbance on Spatial Development of a Two-Dimensional Jet at a Low Reynolds Number. In: Segalini, A. (eds) Proceedings of the 5th International Conference on Jets, Wakes and Separated Flows (ICJWSF2015). Springer Proceedings in Physics, vol 185. Springer, Cham. https://doi.org/10.1007/978-3-319-30602-5_7
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DOI: https://doi.org/10.1007/978-3-319-30602-5_7
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