Computational Aeroacoustic Modelling using Hybrid RANS‐LES Methods with Modified Acoustic Analogies
Sign Up to like & getrecommendations! Published in 2021 at "International Journal for Numerical Methods in Fluids"
DOI: 10.1002/fld.4990
Abstract: This study considers a numerical approach to identifying noise mechanisms in tandem cylinders to understand aircraft landing gear as a primary contributor to airframe noise during approach and landing. Fluctuations in the flow properties induced… read more here.
Keywords: computational aeroacoustic; hybrid rans; using hybrid; aeroacoustic modelling ... See more keywords
Numerical Investigation on Porous Media Quenching Behaviors of Premixed Deflagrating Flame using RANS/LES Model
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Thermal Science"
DOI: 10.1007/s11630-019-1131-7
Abstract: To understand the mechanism of premixed flame quenching by porous media, a zonal hybrid RANS/LES model was employed, in which the LES flow solver was used to resolve the large turbulent structures within the non-porous… read more here.
Keywords: les model; quenching behaviors; porous media; premixed flame ... See more keywords
Accuracy improvement of second-order central scheme using smart post-process filter for hybrid RANS/LES method
Sign Up to like & getrecommendations! Published in 2017 at "Aerospace Science and Technology"
DOI: 10.1016/j.ast.2017.06.035
Abstract: Abstract The present research aims to propose a new approach to improve the performance of computational codes employing the RANS/LES technique with 2nd order central scheme. To accomplish this, an unsteady compressible 3D coupled RANS/LES… read more here.
Keywords: methodology; smart post; rans les; accuracy ... See more keywords
Interaction mechanisms of shock waves with the boundary layer and wakes in a highly-loaded NGV using hybrid RANS/LES
Sign Up to like & getrecommendations! Published in 2020 at "Chinese Journal of Aeronautics"
DOI: 10.1016/j.cja.2019.07.008
Abstract: Abstract Accurate predictions of Shock Waves and Boundary Layer Interaction (SWBLI) and strong Shock Waves and Wake Vortices Interaction (SWWVI) in a highly-loaded turbine propose challenges to the currently widely used Reynolds-Averaged Navier-Stokes (RANS) model.… read more here.
Keywords: shock waves; boundary layer; hybrid rans; highly loaded ... See more keywords
A critical review on the simulations of wind turbine aerodynamics focusing on hybrid RANS-LES methods
Sign Up to like & getrecommendations! Published in 2017 at "Energy"
DOI: 10.1016/j.energy.2017.07.028
Abstract: Wind energy plays a vital role in the development sustainable energy due to its vast availability, commercially ready technology, low cost, and great contribution to CO2 reduction. Wind turbines account for most of the cost… read more here.
Keywords: hybrid rans; rans les; energy; turbine aerodynamics ... See more keywords
Vortical structures and pressure pulsations in draft tube of a Francis-99 turbine at part load: RANS and hybrid RANS/LES analysis
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Heat and Fluid Flow"
DOI: 10.1016/j.ijheatfluidflow.2016.05.007
Abstract: Abstract Recognizing the limitations of the conventional linear-eddy-viscosity (LEVM) Reynolds-averaged Navier–Stokes (RANS) models to reproduce complex three-dimensional unsteady flows in hydraulic machinery, we performed a comparative assessment of a second-moment (Re-stress model, RSM) RANS closure… read more here.
Keywords: rans les; vortical structures; tube francis; pressure pulsations ... See more keywords
A hybrid RANS/LES approach with scale-adaptive capabilities for highly separated flows
Sign Up to like & getrecommendations! Published in 2019 at "International Journal of Computational Fluid Dynamics"
DOI: 10.1080/10618562.2019.1566534
Abstract: ABSTRACT A new hybrid RANS/LES approach with scale-adaptive capabilities is developed. The blending function in the SST model is adopted to prevent the invasion of the von Karman length scale to the RANS region, and… read more here.
Keywords: approach scale; scale adaptive; rans les; model ... See more keywords
Hybrid RANS/LES simulation of sloshing flow in a rectangular tank with and without baffles
Sign Up to like & getrecommendations! Published in 2017 at "Ships and Offshore Structures"
DOI: 10.1080/17445302.2017.1301341
Abstract: ABSTRACT Turbulence modelling is a key issue to be addressed in the numerical study of violent liquid sloshing. To improve the predictive accuracy of RANS and the computational efficiency of LES, a new hybrid RANS/LES… read more here.
Keywords: liquid sloshing; rans les; simulation; tank without ... See more keywords
Assessment of Hybrid RANS/LES Models in Heat and Fluid Flows around Staggered Pin-Fin Arrays
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DOI: 10.3390/en13143752
Abstract: In the present work, the three-dimensional heat and fluid flows around staggered pin-fin arrays are predicted using two hybrid RANS/LES models (an improved delayed detached eddy simulation (IDDES) model and a stress-blended eddy simulation (SBES)… read more here.
Keywords: rans les; les models; pin; fluid flows ... See more keywords