Direct numerical simulation of ‘short’ laminar separation bubbles with turbulent reattachment

By M. Alam, Neil D. Sandham. Journal of Fluid Mechanics, 2000

533 citations recorded by the source corpus.

Subfields: Biomedical Engineering, Computational Mechanics, Ocean Engineering

View Paper: https://www.semanticscholar.org/paper/b41f310babb110c0ad2b6c5cfdcccedd3981b294

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Citations in the corpus

Strategies for turbulence modelling and simulations (2000, background): “…with strong pressure gradients, three-dimensionality, rotation and curvature, complex deformations, heat transfer, combustion, shock waves, and noise (Alam and Sandham, 2000; Adams, 1998; Coleman et al., 1995; Gavrilakis, 1992; Na and Moin, 1998; Ragab and Sreedhar, 1995; Yang and Ferziger, 1993).”
Turbulent boundary layers and channels at moderate Reynolds numbers (2010, background): “In some of these cases, for example, the zero-pressure-gradient layer is included as an auxiliary to a more complex flow, such as separation in Alam & Sandham (2000) and Skote & Henningson (2002), or roughness in Lee & Sung (2007), and the statistics are not very complete.”
Stability and receptivity characteristics of a laminar separation bubble on an aerofoil (2010, result): “This is consistent with Alam & Sandham (2000) for the low levels of reverse flow present.”
The effect of small-amplitude convective disturbances on the size and bursting of a laminar separation bubble (2011, methodology): “For instance, Na & Moin (1998) have considered the fraction of time that the flow in their (turbulent) bubble moves downstream (see their figure 14), while Alam & Sandham (2000) looked at p.d.f.s of skin friction along a bubble (see their figure 8).”
Dynamics of laminar separation bubbles at low-Reynolds-number aerofoils (2009, background): “Downstream of the LSB the large-scale structures break down, and small-scale turbulence increases, leading to a turbulent boundary layer (see Alam & Sandham 2000).”
Numerical investigation of the tone noise mechanism over laminar airfoils (2007, background): “It is worth noting that the friction coefficient in the recirculation region has the same features as those reported by Alam & Sandham (2000) in the two-dimensional simulation of a short laminar bubble which exhibits self-sustained vortex shedding, and is significantly different from that of the…”
Investigations on controlled transition development in a laminar separation bubble by means of LDA and PIV (2004, result): “To stay close to the natural case, the disturbance amplitude was very weak compared to other investigations ( Alam and Sandham 2000).”
Highly resolved large-eddy simulation of separated flow in a channel with streamwise periodic constrictions (2005, methodology): “This is illustrated, for example, by the DNS of Alam & Sandham (2000) for suction-induced (laminar) separation from a flat plate and subsequent turbulent reattachment.”
On the onset of nonlinear oscillations in a separating boundary-layer flow (2003, methodology): “Analysing direct numerical simulation results of boundary-layer separation, Alam & Sandham (2000) construct local velocity profiles matching with those inside the separation bubble: the onset of local absolute instability is shown to depend on the amount of reverse flow.”
Direct numerical simulations of transition in a compressor cascade: the influence of free-stream turbulence (2010, methodology): “Numerical simulations that fully resolve separation-induced transition were conducted by Alam & Sandham (2000) and Spalart & Strelets (2000).”
Large-eddy simulation of boundary-layer separation and transition at a change of surface curvature (2001, methodology): “It takes about seven bubble lengths for the log law to be re-established, as shown numerically by Alam & Sandham (1999) in their DNS study of a laminar separation bubble on a flat plate due to a adverse pressure gradient.”
Numerical study of passive and active flow separation control over a NACA0012 airfoil (2008, background): “The separated shear layer is inviscidly unstable and vortices are formed due to the Kelvin-Helmholtz mechanism [1].”
Direct numerical simulations of forced and unforced separation bubbles on an airfoil at incidence (2008, methodology): “Similar behaviour is observed in two-dimensional simulations performed by Alam & Sandham (2000), which also exhibited vortex shedding.”
Three-dimensional instability in flow over a backward-facing step (2000, background): “For example, the upper separation bubble may become globally unstable (Hammond & Redekopp 1998; Alam & Sandham 2000).”