Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Rouhi, Amirreza"'
Direct numerical simulations are performed of turbulent forced convection in a channel flow with spanwise wall oscillation, either as a plane oscillation or as a streamwise travelling wave. The friction Reynolds number is fixed at $Re_{\tau_0} = 590$
Externí odkaz:
http://arxiv.org/abs/2406.10396
Autor:
Rouhi, Amirreza, Han, David
Teaching machines of scene contextual knowledge would enable them to interact more effectively with the environment and to anticipate or predict objects that may not be immediately apparent in their perceptual field. In this paper, we introduce a nov
Externí odkaz:
http://arxiv.org/abs/2311.10998
Autor:
Li, Mogeng, de Silva, Charitha M., Rouhi, Amirreza, Baidya, Rio, Chung, Daniel, Marusic, Ivan, Hutchins, Nicholas
Publikováno v:
Journal of Fluid Mechanics, 872, 472-491 (2019)
This paper examines recovery of the wall-shear stress of a turbulent boundary layer that has undergone a sudden transition from a rough to a smooth surface. Early works of Antonia and Luxton questioned the reliability of standard smooth-wall methods
Externí odkaz:
http://arxiv.org/abs/2308.01777
Autor:
Chandran, Dileep, Zampiron, Andrea, Rouhi, Amirreza, Fu, Matt K., Wine, David, Holloway, Brian, Smits, Alexander J., Marusic, Ivan
Here, we present measurements of turbulent drag reduction in boundary layers at high friction Reynolds numbers in the range of $4500 \le Re_\tau \le 15000$. The efficacy of the approach, using streamwise travelling waves of spanwise wall oscillations
Externí odkaz:
http://arxiv.org/abs/2211.03718
Autor:
Rouhi, Amirreza, Fu, Matt K., Chandran, Dileep, Zampiron, Andrea, Smits, Alexander J., Marusic, Ivan
Turbulent drag reduction through streamwise travelling waves of spanwise wall oscillation is investigated over a wide range of Reynolds numbers. Here, in Part 1, wall-resolved large-eddy simulations in a channel flow are conducted to examine how the
Externí odkaz:
http://arxiv.org/abs/2211.03175
Autor:
Samie, Milad, Baars, Woutijn, Rouhi, Amirreza, Schlatter, Philipp, Örlü, Ramis, Marusic, Ivan, Hutchins, Nicholas
Publikováno v:
International Journal of Heat and Fluid Flow, Vol. 86, 108683, 2020
Opposition-control of the energetic cycle of near wall streaks in wall-bounded turbulence, using numerical approaches, has shown promise for drag reduction. For practical implementation, opposition control is only realizable if there is a degree of c
Externí odkaz:
http://arxiv.org/abs/2005.01793
Autor:
Rouhi, Amirreza
The effect of waveform shape and extension of negative flowrate are studied at two Reynolds numbers (Re = 80, Re = 200) on stented channels by looking at the kinematics and dynamics of the flow. The waveforms are reconstructed by Fourier decompositio
Externí odkaz:
http://hdl.handle.net/1974/7276
Publikováno v:
In Journal of Fluids and Structures November 2019 91
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Akademický článek
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