[PDF] Top 20 Temporal Large Eddy Simulations of the Near Field of an Aircraft Wake

... the wake vortex dynamics in the near-field to extended near-field, interpolation and extrapolation procedures were ...sufficiently large to avoid the influence of the domain ... See full document

... fighter aircraft also reported findings that support this ...of eddy viscosity in terms of turbulent kinetic energy, so the switching of models can be made within the eddy viscosity definition by ... See full document

... the simulations are preformed on simplified geometries that do not include the slat-track and flap-track fairings and the slat pressure ...the wake. Large eddy simulations of a full ... See full document

... the large scale features of the problem at ...of field lines near the boundary that have a finite probability of connecting across this boundary due to dynami- cal ...regions near the boundary ... See full document

... To visualise the influence of the CVP, the predicted half-plane temperature contours on various y-z planes obtained from LES and RANS calculations are presented in Figs. 11 and 12 for Cases 1 and 2, respectively. These ... See full document

... Atomization involves the conversion of fluid jet into a dispersion of fine droplets to form a spray. It comprises primary and secondary atomization stages [1]. Primary atomization, leads in the first few diameters from ... See full document

... Abstract. Large eddy simulations (LESs) are performed for the area of the Caribbean island Barbados to investigate is- land effects on boundary layer modification, cloud genera- tion and vertical ... See full document

... the near-wall eddies. In near- wall resolved LES, this is addressed by introducing a non-uniform mesh that has higher mesh refinement near the wall, and thus capturing the effect of near-wall ... See full document

... adequately large Reynolds numbers (Re), each of the shear layers from this body roll up in an alternating, periodic fashion, into large-scale vortices (Kármán vortices) behind these bodies ...the ... See full document

... This review chapter is focused on the various methods available to fluid dynamicists, capable of providing inflow boundary conditions for Direct Numerical Simulations DNS or Large Eddy S[r] ... See full document

... into a shape with 3 “lobes.” The two upper lobes fold over the bird’s head, and the lower lobe is folded under the head. Once behind the head, the lobes are fastened together with medical tape and elastic bands. ... See full document

... the field variables in physically distant regions es- sentially independently, as does the SMD algorithm discussed below, the autocorrelation functions of local observables can be expected to decay rapidly in ... See full document

... Here, large-eddy simulations, which resolve the flow inside the density current much 16 better than these convection-permitting studies, have been performed to investigate the structure [r] ... See full document

... Using direct numerical simulations, this study shows the eect of crosswind on vortex rebound. The main eect of the crosswind is to asymmetrize the rebound: the downwind vortex bounces earlier than the upwind one. ... See full document

... The first setup uses a so-called stabilized biconjugate gra- dient solver with incomplete LU factorization (ILU). Direct LU factorizations tend to fill up the zero entries (sparsity pat- tern) of the matrix and quickly ... See full document

... A classification of the data with respect to atmospheric sta- bility has been omitted since the obtained parameters pre- sented high uncertainty. In effect, the results for L showed large variations and, in some ... See full document

... with large-aperture scintillometer In addition to tower- and aircraft-based eddy-covariance measurements, we also include sensible heat flux estimates from the large-aperture scintillometer in ... See full document

... generates large percentage of the car’s total ...nowhere near 5% of the total cross sectional area ‎ ...a large negative influence on other car parts due to its wake and vortex ... See full document

... Most sub-grid models are based on the idea of an energy cas- cade due to three-dimensional isotropic turbulence so that the energy spectrum has the slope of k −5/3 , where k is the wave number. Figure 1a shows the ... See full document

... the wake deficit by synchronously altering the line-of-sight azimuth and eleva- tion of each individual ...the near-wake campaign, the WindScanners scanned three cross planes located at ...the ... See full document