Results 21 to 30 of about 57,630 (294)
Open-rotor noise prediction with a RANS-informed analytical method [PDF]
18th AIAA/CEAS Aeroacoustics Conference (33rd AIAA Aeroacoustics Conference), 2012 Analytical models are informed by a steady-state RANS calculation with mixing plane in order to predict turbomachinery noise with a short computing time; the method is tested on the example of a contra-rotating open-rotor propulsion system at take-off condition; the results are compared to these of an unsteady RANS calculation with the pressure far ...
Guerin, S. +3 more
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An efficient Two-Layer wall model for accurate numerical simulations of aeronautical applications [PDF]
, 2019 Two-Layer wall models have been widely studied since they allow wall modeled Large Eddy Simulationsof general non-equilibrium flows. However, they are plagued by two persistent problems, the "log-layermismatch" and the resolved Reynolds stresses inflow ...
Calafell Sandiumenge, Joan +2 more
core +1 more source
EPJ Web of Conferences, 2017 The article is concerned with the numerical simulation of the compressible turbulent flow in time dependent domains. The mathematical model of flow is represented by the system of non-stationary Reynolds- Averaged Navier-Stokes (RANS) equations.
Česenek Jan
doaj +1 more source
Exploring Geometric Feature Hyper-Space in Data to Learn Representations of Abstract Concepts
Applied Sciences, 2020 The term concept has been a prominent part of investigations in psychology and neurobiology where, mostly, it is mathematically or theoretically represented.
Rahul Sharma +3 more
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Grid resolution assessment method for hybrid RANS-LES in turbomachinery
Engineering Applications of Computational Fluid Mechanics, 2022 Hybrid RANS-LES is a promising method for analyzing the complex flow structure in turbomachinery due to its excellent compromise between accuracy and computational cost.
Ruiyu Li +4 more
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EPJ Web of Conferences, 2016 In this article we deal with numerical simulation of the non-stationary compressible turbulent flow. Compressible turbulent flow is described by the Reynolds-Averaged Navier-Stokes (RANS) equations.
Česenek Jan
doaj +1 more source
On Interface Issues in LES/RANS Coupling Strategies: A Method for Turbulence Forcing
Journal of Fluid Science and Technology, 2011 The present work deals with a computational strategy coupling near-wall, eddyviscosity-based RANS models with LES within a zonal Hybrid LES/RANS (HLR) framework. Key questions concerning the coupling of both methods, the inherently steady RANS method and
Suad JAKIRLIC +2 more
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Construction method for general phenomenological RANS turbulence model
, 2021 This paper proposes a phenomenological Reynolds Averaged Navier-Stokes (RANS) calculation model based on physical constraints. In this model part of the source terms in the e equation was replaced with the deep learning model, using the standard k-e model as a template.
Zhang, Shuming +4 more
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Compressibility Modified RANS Simulations for Noise Prediction of Jet Exhausts with Chevron
Journal of Applied Fluid Mechanics, 2021 The impact of compressibility modified RANS turbulence closures is investigated for high subsonic round and chevron jet flows with Mach = 0.9 and Re = 1.03×106, including the predicted acoustic noise generation.
Y. Jin, X. Han, P. Fan
doaj
Modelling a Propeller Using Force and Mass Rate Density Fields
Journal of Marine Science and Engineering, 2018 A method to replace a propeller by force and mass rate density fields has been developed. The force of the propeller on the flow is calculated using a boundary element method (BEM) program and used to generate the force and mass rate fields in a Reynolds-
David Hally
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