Results 91 to 100 of about 107,584 (238)

Evaluation of Third-Order Weighted Essentially Non-Oscillatory Scheme Within Implicit Large Eddy Simulation Framework Using OpenFOAM

Aerospace
The current study investigates the performance of implicit Large Eddy Simulation (iLES) incorporating an unstructured third-order Weighted Essentially Non-Oscillatory (WENO) reconstruction method, alongside conventional Large Eddy Simulation (LES) using ...
Zhuoneng Li, Zeeshan A. Rana
doaj   +1 more source

Strategy Analysis of Seamlessly Resolving Turbulent Flow Simulations

Aerospace
Modeling of wall-bounded turbulent flows, in particular the hybridization of the Reynolds-averaged Navier-Stokes (RANS) and large eddy simulation (LES) methods, has faced serious questions for decades.
Stefan Heinz
doaj   +1 more source

Large Eddy Simulation of Turbulent Channel Flows by the Rational LES Model

, 2002
The rational large eddy simulation (RLES) model is applied to turbulent channel flows. This approximate deconvolution model is based on a rational (subdiagonal Pade') approximation of the Fourier transform of the Gaussian filter and is proposed as an alternative to the gradient (also known as the nonlinear or tensor-diffusivity) model.
Iliescu, T., Fischer, P.
openaire   +2 more sources

Calibrating sub-grid scale models for high-order wall-modeled large eddy simulation

Advances in Aerodynamics
High-order methods have demonstrated orders of magnitude reduction in computational cost for large eddy simulation (LES) over low-order methods in the past decade.
Zhaowen Duan, Z. J. Wang
doaj   +1 more source

A Coherent vorticity preserving eddy viscosity correction for Large-Eddy Simulation

, 2017
This paper introduces a new approach to Large-Eddy Simulation (LES) where subgrid-scale (SGS) dissipation is applied proportionally to the degree of local spectral broadening, hence mitigated or deactivated in regions dominated by large-scale and/or ...
Chapelier, Jean-Baptiste, Scalo, Carlo, Wasistho, Bono   +2 more
core   +1 more source

A New Method for Assessing Haemolysis in a Rotary Blood Pump Using Large Eddy Simulations (LES)

Chemical and Process Engineering, 2017
The opportunity to assess haemolysis in a designed artificial heart seems to be one of the most important stages in construction. We propose a new method for assessing haemolysis level in a rotary blood pump.
Szwast Maciej, Moskal Arkadiusz, Piątkiewicz Wojciech   +2 more
doaj   +1 more source

Insights derived from CFD studies on the evolution of planar wall jets

Engineering Applications of Computational Fluid Mechanics, 2016
The main objective of this paper is to demonstrate that a simple and cost-effective 2D Reynolds-averaged Navier–Stokes (RANS) simulation approach can often be efficiently used in industrial design applications.
Chen Fu, Mesbah Uddin, Alex Curley
doaj   +1 more source

LES of Gas Exchange in IC Engines

Oil & Gas Science and Technology, 2013
As engine technologies become increasingly complex and engines are driven to new operating points, understanding transient phenomena is important to ensure reliable engine operation.
Mittal V., Kang S., Doran E., Cook D., Pitsch H.   +4 more
doaj   +1 more source

Boundary conditions and SGS models for LES of wall-bounded separated flows: an application to engine-like geometries [PDF]

, 2014
The implementation and the combination of advanced boundary conditions and subgrid scale models for Large Eddy Simulations are presented. The goal is to perform reliable cold flow LES simulations in complex geometries, such as in the cylinders of ...
MONTORFANO, ANDREA, ONORATI, ANGELO, PISCAGLIA, FEDERICO   +2 more
core  

Validation of a statistic algorithm applied to LES model - Part I: First and second order statistics [PDF]

The main objective of this work is to develop a statistical algorithm to process the data generated by the Large-Eddy-Simulation model (LES) in real time. The simulations analyzed here were based on a convective, neutral and stable periods.
Barbaro, E.W., Oliveira, A.P., Soares, J.   +2 more
core