[PDF] Top 20 Implicit large eddy simulation of weakly-compressible turbulent channel flow

... in Implicit Large Eddy Simulation of weakly-compressible turbulent channel ...for compressible flows, in low Mach compressible, near-wall ... See full document

... classical Large Eddy Simulation (LES) methods are more efficient, but necessitate the use of a low-pass filtering operation that produces sub-grid scale terms requiring additional modeling, which in ... See full document

... classical Large Eddy Simulation (LES) methods are more efficient, but necessitate the use of a low-pass filtering operation that produces sub-grid scale terms requiring additional modeling, which in ... See full document

... ‘abnormal’ turbulent intensity distribution and high inter-sub-channel mixing rates were observed in the vicinity of the narrow gaps formed by the fuel rods in nuclear ...extraordinary flow behaviour ... See full document

... laminar compressible gas flow in microchannel include a 90 bend with first order slip boundary ...mass flow rate, while, it has a local effect and weakly affected the global performance of the ... See full document

... Figure 4 shows that at the end of the simulations, the global mixing parameter reaches very simi- lar values,  ~ 0.75 0.8  , for DNS and ILES. However, the early time behavior is different, At the start of the DNS,   ... See full document

... fully implicit time integration method was presented in Chapter 4, and was exclusively used for all of the calculations presented in Chapters 6 and 7, ...and flow equations by retaining the terms in the ... See full document

... In Large Eddy Simulation large eddies are resolved and small eddies are ...the large-scale eddies depends strongly on the forces acting on the flow and on ini- tial and boundary ... See full document

... a turbulent boundary-layer over a rough ...For large values of λ ...a large-eddy simulation (LES) to characterize the behaviour of the flow over a submerged, mildly dense, rigid ... See full document

... an implicit time integrator using a stabilized trapezoid rule with an explicit Adams-Bashforth method for error control, and a robust Krylov subspace solver for the spatially discretized ...simple flow ... See full document

... studied turbulent channel flows with smooth-rough-smooth wall boundary transitions using large eddy simulations (LES), examining first and second order flow statistics in addition to ... See full document

... the compressible Navier-Stokes ...the flow, it does not capture non-equilibrium effects in accelerating and separated regions of the ...full compressible Navier-Stokes equations without neglecting ... See full document

... smooth-wall channel-flow LES provide reasonable representations of the mean log-like velocity profile at either unknown or at moderately large Reynolds number but do not appear to have yet been used ... See full document

... a large-scale and a small-scale component, has been extensively ...an eddy-viscosity on either the small-scale or the large-scale part of u(x, t) and make it act on the small- scale part of the ... See full document

... of turbulent boundary-layer flows suffer from the need to prescribe accurate three-dimensional and time-dependent inflow-boundary ...to compressible flows raises the issue of the rescaling of the ... See full document

... present channel LES utilizes a roughness strip of considerably longer ex- tent (64δ) than the aforementioned studies and this length invites a relaxation towards equi- ...on flow responses over the entire ... See full document

... oscillatory flow control were modeled at the surface boundary such that the control cavity location, size and non-dimensional actuation parameters matched that of the ...controlled flow, the addition of the ... See full document

... Large eddy simulation of ow over a wall-mounted cube in a channel was performed at a Reynolds number of ...and turbulent stresses were computed and compared with experimental data to ... See full document

... adiabatic compressible boundary-layer statistics in terms of incompressible boundary layers hold for non-adiabatic cases ...of turbulent structures, however, its effects remain insignificant even for a su- ... See full document

... But in many practical applications (Wörner, 2012), the Reynolds number is considerably higher and bubbles at high enough Reynolds numbers rise unsteadily, either wobbling as they rise or rising along a spiral path. The ... See full document