Results 11 to 20 of about 305,370 (309)

Synthetic turbulence generator for lattice Boltzmann method at the interface between RANS and LES [PDF]

open access: yesThe Physics of Fluids, 2022
The paper presents a synthetic turbulence generator (STG) for the lattice Boltzmann method (LBM) at the interface of the Reynolds averaged Navier–Stokes (RANS) equations and the LBM large eddy simulation (LES).
X. Xue, H. Yao, L. Davidson
semanticscholar   +1 more source

Turbulence Modeling for Physics-Informed Neural Networks: Comparison of Different RANS Models for the Backward-Facing Step Flow

open access: yesFluids, 2023
Physics-informed neural networks (PINN) can be used to predict flow fields with a minimum of simulated or measured training data. As most technical flows are turbulent, PINNs based on the Reynolds-averaged Navier–Stokes (RANS) equations incorporating a ...
Fabian Pioch   +5 more
semanticscholar   +1 more source

An Overview of Hybrid RANS–LES Models Developed for Industrial CFD

open access: yesApplied Sciences, 2021
An overview of scale-resolving simulation (SRS) methods used in ANSYS Computational Fluid Dynamics (CFD) software is provided. The main challenges, especially when computing boundary layers in large eddy simulation (LES) mode, will be discussed.
F. Menter   +3 more
semanticscholar   +1 more source

FlexRIC: an SDK for next-generation SD-RANs

open access: yesConference on Emerging Network Experiment and Technology, 2021
Unlike previous mobile networks, 5G New Radio (5G-NR) provides unprecedented flexibility in the radio access network (RAN) to support diverse use cases in a multi-tenant environment.
Robert Schmidt   +2 more
semanticscholar   +1 more source

Stratifications on the Ran Space [PDF]

open access: yesOrder, 2021
AbstractWe describe a partial order on finite simplicial complexes. This partial order provides a poset stratification of the product of the Ran space of a metric space and the nonnegative real numbers, through the Čech simplicial complex. We show that paths in this product space respecting its stratification induce simplicial maps between the ...
openaire   +4 more sources

Comparison and evaluation of blade element methods against RANS simulations and test data

open access: yesCEAS Aeronautical Journal, 2022
This paper compares several blade element theory (BET) method-based propeller simulation tools, including an evaluation against static propeller ground tests and high-fidelity Reynolds-Average Navier Stokes (RANS) simulations.
O. Bergmann   +3 more
semanticscholar   +1 more source

UNCERTAINTY QUANTIFICATION OF SELF-PROPULSION ANALYSES WITH RANS-CFD AND COMPARISON WITH FULL-SCALE SHIP TRIALS

open access: yesBrodogradnja, 2022
RANS-CFD is a well-established tool with widespread use in maritime industry and research. Valuable information might be extracted from the results of such simulations in terms of ship resistance and flow field variables.
Ahmet Ziya Saydam   +3 more
doaj   +1 more source

Prediction of cavitating propeller underwater radiated noise using RANS & DES-based hybrid method

open access: yesShips and Offshore Structures, 2021
This study focuses on the prediction of the hydrodynamic and hydroacoustic performance of a cavitating marine propeller in open water condition using Reynolds-averaged Navier-Stokes (RANS) and Detached Eddy Simulation (DES) solvers.
Savas Sezen, M. Atlar, P. Fitzsimmons
semanticscholar   +1 more source

Quantification of model uncertainty in RANS simulations: A review [PDF]

open access: yesProgress in Aerospace Sciences, 2018
In computational fluid dynamics simulations of industrial flows, models based on the Reynolds-averaged Navier–Stokes (RANS) equations are expected to play an important role in decades to come.
Heng Xiao, P. Cinnella
semanticscholar   +1 more source

Numerical simulation of wake vortex for the flight near the ground with different boundary conditions

open access: yesEngineering Applications of Computational Fluid Mechanics, 2022
The aerodynamic performances of aircraft change due to the ground effect for flights near the ground. The air cushion generated near the ground will change the development of the aircraft wake vortex.
Zeyu Zhang   +5 more
doaj   +1 more source

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