Direct numerical simulations of turbulent channel flow with transverse square bars on one wall

By Stefano Leonardi, Paolo Orlandi, R. Smalley, L. Djenidi, R. Antonia. Journal of Fluid Mechanics, 2003

393 citations recorded by the source corpus.

Subfields: Computational Mechanics, Ecology, Ocean Engineering

View Paper: https://www.semanticscholar.org/paper/09cdca92dbccba295ecb093321825193de6dd2fb

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Computational Mechanics

1. M. Schultz
2. K. Flack
3. Hyung Jin Sung
4. Javier Jiménez
5. J. Lee
6. R. Volino
7. Ivan Marusic
8. P. Krogstad

In Ecology

1. R. Volino
2. M. Schultz
3. K. Flack
4. Javier Jiménez
5. O. Flores
6. Hyung Jin Sung
7. P. Krogstad
8. Paolo Orlandi

In Ocean Engineering

1. Hyung Jin Sung
2. K. Flack
3. M. Schultz
4. P. Krogstad
5. I. Castro
6. R. Volino
7. Stefano Leonardi
8. J. Lee

Citations in the corpus

• Comparison of turbulent boundary layers over smooth and rough surfaces up to high Reynolds numbers (2016, result): “There are, however, a number of studies that report a lack of similarity between smooth- and rough-wall outer-layer flows (e.g. Krogstad, Antonia & Browne 1992; Tachie, Bergstrom & Balachandar 2000; Keirsbulck et al. 2002; Leonardi et al. 2003; Bhaganagar, Kim & Coleman 2004; Lee & Sung 2007).”
• Direct numerical simulation of the turbulent boundary layer over a rod-roughened wall (2007, methodology): “Leonardi et al. (2003) showed a general reduction of the anisotropy tensor when rod roughness was introduced onto one side wall of a channel.”
• An experimental and numerical study of channel flow with rough walls (2005, methodology): “Shortly thereafter, DNS of turbulent channel flow with transverse bar roughness were performed by Miyake, Tsujimoto & Masaru (2001), Ikeda & Durbin (2002), Leonardi et al. (2003, 2004) and Nagano, Hatori & Houra (2004).”
• Direct simulations of a rough-wall channel flow (2007, methodology): “This was also confirmed both experimentally and numerically (e.g. Krogstad & Antonia 1994; Leonardi et al. 2003a) through the examination of two-point correlations for k-type roughness.”
• Channel flow over large cube roughness: a direct numerical simulation study (2010, background): “Leonardi et al. (2003) found a similar correspondence between uτ and U +. (Recall that the bulk velocity Ub is kept fixed throughout the computations; variations in ρu2τ from case to case correspond to variations in the time-averaged pressure gradient.)”
• The effect of the slope of irregularly distributed roughness elements on turbulent wall-bounded flows (2008, background): “As in recent numerical studies of wall roughness (see e.g. Leonardi et al. 2003) we carry out resolved large-eddy simulations (LES) (also named quasi-DNS after Spalart et al. 1997) of turbulent channel flows with rough walls.”
• Turbulence Structure in Rough and Smooth Wall Boundary Layers (2006, background): “Additionally, the numerical simulations of turbulent channel flow by Leonardi et al. (2003) and Bhaganagar, Kim & Coleman (2004) show roughness effects in the outer layer.”
• Direct numerical simulation of the turbulent boundary layer over a cube-roughened wall (2010, background): “For example, in the case of the turbulent channel flow with a staggered cube array with approximately 10 % density, it introduces a stronger perturbation, compared with the 2-D square bar roughness with small px/k (Leonardi et al. 2003; Leonardi & Castro 2010).”
• Effect of wall-boundary disturbances on turbulent channel flows (2006, background): “Both figures are consistent with previous results obtained over rough walls in experiments (Bakken et al. 2005; Poggi et al. 2003) and in numerical simulations (Ashrafian et al. 2004; Leonardi et al. 2003; Orlandi et al. 2003).”
• Impact of Variable Atmospheric and Oceanic Form Drag on Simulations of Arctic Sea Ice (2014, background): “(18) remains of the same functional form in the ocean: The value m w 5 10 is chosen in line with direct numerical simulations of turbulent water flow over model surfaces containing rectangular obstacles (Le et al. 1997; Leonardi et al. 2003).”
• Structure of turbulent flow over regular arrays of cubical roughness (2007, methodology): “These typically consist of two-dimensional bar roughness, and have been the subject of detailed laboratory and numerical investigations over a number of years (Djenidi, Elavarasan & Antonia 1999; Leonardi et al. 2003, 2004).”
• DNS of turbulent channel flows with two- and three-dimensional roughness (2006, background): “[ 11 ] showed that, at low Reynolds number, for square bars maximum drag occurs when the ratio between separation ( w ) and height ( k ) is w / k ≈ 7.”
• The rough-wall turbulent boundary layer from the hydraulically smooth to the fully rough regime (2006, background): “2005; Kunkel & Marusic 2006) and work that shows that roughness effects on the wall-normal component extend well into the outer layer (e.g. Krogstad et al. 1992; Leonardi et al. 2003).”