A Near-Wall Methodology for Large-Eddy Simulation Based on Dynamic Hybrid RANS-LES [PDF]
EntropyAttempts to mitigate the computational cost of fully resolved large-eddy simulation (LES) in the near-wall region include both the hybrid Reynolds-averaged Navier–Stokes/LES (HRL) and wall-modeled LES (WMLES) approaches.
Michael Tullis, D. Keith Walters
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Numerical simulation of local and upwind temperature stratification on flow and dispersion in a bi-dimensional street canyon. [PDF]
PLoS ONEThe thermal effect mainly includes boundary temperature stratification and the local thermal effect. The combined effect of these factors on flow and dispersion in a bi-dimensional canyon was investigated by the RANS and LES methods to evaluate their ...
Xiaohui Huang, Lizhen Gao
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A new RANS-based wind farm parameterization and inflow model for wind farm cluster modeling [PDF]
Wind Energy Science, 2023 Offshore wind farms are more commonly installed in wind farm clusters, where wind farm interaction can lead to energy losses; hence, there is a need for numerical models that can properly simulate wind farm interaction.
M. P. van der Laan +9 more
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The DDES around Wing Based on Improved Mixed Length Scale [PDF]
Hangkong bingqi, 2022 For the separation problem at small and medium angles of attack, in the early stage of DDES (Delayed Detached Eddy Simulation) method, it takes some time for the flow separation region to develop, and usually delays the switch from RANS mode to LES mode,
Qiu Dexin, Wang Liangjun, Zhang Wu
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Media Komunikasi Teknik Sipil, 2023 In fluid dynamics analysis, one of the things to do is to perform numerical modeling validated on the results of experimentation. In numerical modeling of wind flow there are several forms of modeling used including RANS, LES, DNS, etc.
Doni Priambodo +3 more
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A RANS-BEM Method to Efficiently Include Appendage Effects in RANS-Based Hull Shape Evaluation [PDF]
Journal of Sailing Technology, 2021 Abstract. In this paper an approach to mimic the influence of appendages on the pressure distribution on a boat’s hull in RANS simulations is given. While, of course, the appendages could be modelled explicitly in the RANS simulation, this significantly increases the cell count and CPU-time requirements of the simulations, particularly for boats with ...
Hannes Renzsch, Britton Ward
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Spectro-consistent discretization of Navier-Stokes: a challenge to RANS and LES [PDF]
, 1998 In this paper, we discuss the results of a fourth-order, spectro-consistent discretization of the incompressible Navier-Stokes equations. In such an approach the discretization of a (skew-)symmetric operator is given by a (skew-)symmetric matrix ...
Veldman, A.E.P.,, Verstappen, R.W.C.P.,
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Predicting different turbulent mixing problems with the same k–ɛ model and model coefficients
AIP Advances, 2021 In the foreseeable future, the Reynolds-averaged Navier–Stokes (RANS) method will remain the most viable approach for simulating practical flows. The RANS method mainly comprises two parts: a physical model and model coefficients.
Han-song Xie +2 more
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Development of explicit algebraic models of Reynolds stresses for flows in channels using gene expression programming [PDF]
E3S Web of Conferences, 2023 To build a data-driven approximation for the Reynolds-stress anisotropy (RSA), the symbolic regression method of gene expression programming (GEP) is applied.
Li Haoyan +3 more
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On bore dynamics and pressure:RANS, GN, and SV Equations [PDF]
, 2020 Propagation and impact of two and three dimensional bores generated by breaking of a water reservoir is studies by use of three theoretical models.
Ertekin, R. Cengiz +2 more
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