Variations of von Kármán coefficient in canonical flows

By H. Nagib, K. Chauhan. 2008

424 citations recorded by the source corpus.

Subfields: Computational Mechanics, Environmental Engineering, Global and Planetary Change

View Paper: https://www.semanticscholar.org/paper/0ffb3fa86e727cdcf8aeec61e106183326505746

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

In Environmental Engineering

In Global and Planetary Change

Citations in the corpus

A predictive inner–outer model for streamwise turbulence statistics in wall-bounded flows (2011, result): “This is not surprising as several studies on APG boundary layers have reported a deviation of the mean velocity profile from the classical log law with significant change in the wake region (Krogstad & Sk̊are 1995; Marusic & Perry 1995; Nagano, Tsuji & Houra 1998; Nagib & Chauhan 2008).”
Turbulence in supersonic boundary layers at moderate Reynolds number (2011, background): “However, the formation of an inflection point in the diagnostic function is observed around y+ ≈ 125 at the highest Re, for k ≈ 0.384, which is the asymptotic value suggested for high-Reynolds-number boundary layers (Nagib & Chauhan 2008).”
Spectral analysis of the budget equation in turbulent channel flows at high Reynolds number (2018, background): “Even though his prediction is generally accepted, the universality of the von Kármán constant, κ , has remained controversial (Nagib & Chauhan 2008; Marusic et al. 2010c; Monkewitz 2017; Luchini 2018).”
History effects and near equilibrium in adverse-pressure-gradient turbulent boundary layers (2017, result): “…we can observe the general effect of a moderate APG with β = 1.4 on the boundary layers, compared with the equivalent ZPG case: the APG TBLs exhibit a steeper logarithmic region, as previously observed by Nagib & Chauhan (2008) who reported lower values of the von Kármán coefficient κ in APGs.”
Effect of wall heating on turbulent boundary layers with temperature-dependent viscosity (2013, background): “Although the universality of the value of κ remains the subject of active research (Nagib & Chauhan 2008; Marusic et al. 2010), in the current simulations, the slope of the log-layer remains unchanged irrespective of the wall temperature.”
Towards Reconciling the Large-Scale Structure of Turbulent Boundary Layers in the Atmosphere and Laboratory (2012, methodology): “With an estimate of Uτ , the variation of −uw/U 2τ for the surface layer is compared with the prediction of Chauhan (2007) and Nagib and Chauhan (2008) for a zero-pressure-gradient turbulent boundary layer.”
Hot-wire spatial resolution issues in wall-bounded turbulence (2009, methodology): “In addition, the precise choice of constants for the logarithmic region are also under debate (Nagib & Chauhan 2008).”
A critical-layer framework for turbulent pipe flow (2010, methodology): “For channel flow with κ = 0.38, B = 4.17 and C = 0.175 (Nagib & Chauhan 2008), the estimation of the location of the peak associated with a lower branch-type critical VLSM is given by (4.4), giving y+2/3 ≈ 0.62R+2/3.”
Channel flow over large cube roughness: a direct numerical simulation study (2010, background): “Values of the log-law parameters are consistent with the implications of the results for smooth-wall flows of different classes (Nagib & Chauhan 2008), suggesting that there is no sudden jump in the nature of the near-wall flow as surface roughness increases from zero, which seems intuitively…”
A parametric study of adverse pressure gradient turbulent boundary layers (2011, methodology): “Therefore, it is suggested that higher Reynolds number data are needed to make definite conclusions about the effect of pressure gradient on the log law using this analysis (as pointed out by Nagib and Chauhan, 2008).”
On the logarithmic region in wall turbulence (2013, background): “Studies in the atmosphere by Andreas et al. (2006) conclude that κ = 0.387, which agrees with Nagib & Chauhan (2008) within experimental uncertainty.”
Direct numerical simulation of turbulent channel flow up to $\mathit{Re}_{{\it\tau}}\approx 5200$ (2014, background): “Further, the magnitude of the premultiplied spectrum at the plateau agrees with the value observed experimentally, approximately 0.8 in wall units, in boundary layers (Nickels et al. 2005) and in pipe flow (Rosenberg et al. 2013).”