Physically Consistent Resolving Simulations of Turbulent Flows [PDF]
EntropyUsually applied simulation methods for turbulent flows as large eddy simulation (LES), wall-modeled LES (WMLES), and detached eddy simulation (DES) face significant challenges: they are characterized by improper resolution variations and essential ...
Stefan Heinz
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Large Eddy Simulation of Partial Cavitation Around a 2D Plane-Convex Hydrofoil [PDF]
Revista Politécnica, 2015 Resumen: Investigaciones sobre la cavitación tienen una gran importancia económica en el campo de la maquinaria hidráulica. Durante más de 40 años, métodos de mecánica computacional de fluidos han sido para entender estosfenómenos y ayudar a mejorar los ...
Ricardo Soto +3 more
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Investigation of numerical approaches to modeling large-scale turbulent vortex flows in the mode of vertical take-off and landing of an aircraft [PDF]
Научно-технический вестник информационных технологий, механики и оптики, 2021 The study considers the operation of an unmanned aerial vehicle in hovering mode over a flat landing platform. As a propulsion system, impellers are used, which are a system of a propeller rotating inside an air ring.
Dmitriy V. Rybakov +4 more
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An Investigation of Scale-Resolving Turbulence Models for Supersonic Retropropulsion Flows
Fluids, 2022 Characterization of unsteady loads is critical for the development of control systems for next-generation air vehicles. Both Direct Numerical Simulation (DNS) and Large Eddy Simulation (LES) methods are prohibitively expensive, and existing Reynolds ...
Gabriel Nastac, Abdelkader Frendi
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Race Car Flow Field Analysis using Autoencoders and Clustering
International Journal of Automotive Engineering, 2023 : The aerodynamic development process of a racing car involves the generation of a great amount of data from numerical investigations. A Convolutional Autoencoder (CAE) architecture is applied to optimize the aerodynamic analysis workflow. In this study,
Michaela Reck +3 more
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Frontiers in Energy Research, 2022 Because of their high molecular heat conductivity, low-Prandtl number liquid metal is a promising candidate coolant for various designs of advanced nuclear systems such as liquid metal–cooled fast reactors and accelerator-driven sub-critical system (ADS).
Xi Huang +5 more
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Mathematical Methodology and Metallurgical Application of Turbulence Modelling: A Review
Metals, 2021 This paper focusses on three main numerical methods, i.e., the Reynolds-Averaged Navier-Stokes (RANS), Large Eddy Simulation (LES), and Direct Numerical Simulation (DNS) methods. The formulation and variation of different RANS methods are evaluated.
Yannan Wang +4 more
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Reynolds Sensitivity of the Wake Passing Effect on a LPT Cascade Using Spectral/hp Element Methods
International Journal of Turbomachinery, Propulsion and Power, 2022 Reynolds-Averaged Navier–Stokes (RANS) methods continue to be the backbone of CFD-based design; however, the recent development of high-order unstructured solvers and meshing algorithms, combined with the lowering cost of HPC infrastructures, has the ...
Andrea Cassinelli +5 more
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On Epistemological Boundaries of Turbulence Modeling Revealed through Stokes’ Reserved Stance on Reynolds’ RANS Equations [PDF]
长江科学院院报[Objective] This study reveals the epistemological rationale underlying George Gabriel Stokes’ cautious and reserved stance in his review of Osborne Reynolds’ groundbreaking 1895 paper proposing the Reynolds-Averaged Navier-Stokes (RANS) equations. While
ZHANG Xiao-feng
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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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