[PDF] Top 20 Performance of high-order implicit large eddy simulations

... Implicit Large Eddy Simulations (iLES) originated from the ob- servations made in [1] that the embedded dissipation of a certain class of numerical methods can be used in lieu of the explicit ... See full document

... first order implicit scheme is used for temporal discretization, and the scalar transport equation for mixture fraction is solved using the MARS differencing ... See full document

... several high-resolution and high-order finite volume schemes in Implicit Large Eddy Simulation of weakly-compressible turbulent channel ...ninth order, as well as with and ... See full document

... accounts for turbulent fluctuations in fluid momentum. Once more, the highest-order iLES successfully predicts the location and magnitude of the peak Reynolds stress, while the lower- order iLES ... See full document

... „high order‟ polynomial approximation locally within each element which is the main feature of a discontinuous Galerkin ...the performance and scalability of our code on a number of parallel ... See full document

... the simulations, the global mixing parameter reaches very simi- lar values,  ~ ...very high in the DNS shown here but should be sufficient to estimate the limiting value of   s a limiting value has ... See full document

... the high-order iLES9 manages to capture all three regions with the correct spectrum roll off slopes from low- to high-frequency ...lower order methods produce a steeper slope than -5 for ... See full document

... this high Reynolds number case, the LDPPM scheme is able to resolve smaller turbulent scales throughout the wake, but no real gains were achieved in predicting wall heat flux levels as compared with the PPM ...the ... See full document

... a large-eddy simulation (LES). In order to clarify and distinguish them from other ar- tificial effects caused by numerical schemes, we used a fully compressible meteorological LES model with a fully ... See full document

... previously described. However, motion models may not always be available in an analytical expression, for example, particle flow measure recorded from patients. By definition, such measurements cannot be embedded in the ... See full document

... are high enough in operating condition that the fluctuation of flow properties cannot be ...In order to accurately resolve this wide range of scales, the grid must be fine enough to capture the small eddies ... See full document

... good performance. In order to obtain each profile, raw data is first averaged over the stream-wise direction (Fourier ...in order to minimize any spurious element edge phenomena along their radial ... See full document

... equation eddy-viscosity LES model ...second-order implicit backward time-marching ...The simulations are carried out for a total time period of 1100δ o /U m with variable time-step and a ... See full document

... fall more in line with work such as Shives and Crawford (2013), suggesting /1x to be adapted to the physical model in order to distribute the force over a meaningful length scale. For an excerpt of the resolutions ... See full document

... Gullbrand (2002) studied grid independent LES for turbulent channel flow using explicit filtering. She concluded that an explicit filter is able to provide grid independent results for turbulent channel flow and to ... See full document

... CAA simulations in the noise source region rely on the numerical solution of the compressible Navier–Stokes ...In order to accurately represent acoustic phenomena, high-order discretization ... See full document

... - order, and the Weighted Essentially Non-Oscillatory (WENO) 5 th to 9 th -order accurate flux limiter schemes against DNS data; (ii) to examine the effects of the low Mach correction on the accuracy of the ... See full document

... which high-performance computing is trans- forming the way we do ...a Large Eddy Simulation (LES) approach, explicitly computing only a fraction of the active dynamical ...between large ... See full document

... 1410. The main disadvantage, however, is the need to evaluate the growth terms that are numerous and complicated in form. Also, since such similarity does not always occur (Keating et al. 2004), the modification was made ... See full document

... a large eddy simulation was performed. In large eddy simulation (LES), only the largest, most energetic scales are directly resolved by the numerical ...an eddy viscosity which is ... See full document