Results 21 to 30 of about 5,333 (258)

Modelling of natural and bypass transition in aerodynamics

open access: yesEPJ Web of Conferences, 2014
Most of transition models are proposed for modelling of the bypass transition common in the internal aerodynamics especially in turbomachinery where free stream turbulence is the dominant parameter affecting the transition onset.
Fürst Jiří   +2 more
doaj   +1 more source

Performance Assessment of Three Turbulence Models Validated through an Experimental Wave Flume under Different Scenarios of Wave Generation

open access: yesJournal of Marine Science and Engineering, 2020
This study aimed to adjust the turbulence models to the real behavior of the numerical wave flume (NWF) and the future research that will be carried out on it, according to the turbulence model that best adjusts to each particular case study.
Lander Galera-Calero   +3 more
doaj   +1 more source

Numerical Analysis of Turbulent Combustion in a Model Swirl Gas Turbine Combustor

open access: yesJournal of Combustion, 2016
Turbulent reacting flows in a generic swirl gas turbine combustor are investigated numerically. Turbulence is modelled by a URANS formulation in combination with the SST turbulence model, as the basic modelling approach.
Ali Cemal Benim   +3 more
doaj   +1 more source

Comprehensive CFD Aerodynamic Simulation of a Sport Motorcycle

open access: yesEnergies, 2022
Nowadays, aerodynamics is a key focal point in the vehicle design process. Beyond its direct impact on the performance of a vehicle, it also has significant effects on economics and safety. In the last decade numerical methods, mainly Computational Fluid
Krzysztof Wiński, Adam Piechna
doaj   +1 more source

Nested polyhedra model of turbulence [PDF]

open access: yesPhysical Review E, 2017
A discretization of the wave-number space is proposed, using nested polyhedra, in the form of alternating dodecahedra and icosahedra that are self-similarly scaled. This particular choice allows the possibility of forming triangles using only discretized wave-vectors when the scaling between two consecutive dodecahedra is equal to the golden ratio, and
openaire   +4 more sources

On the Relative Effect of Underwater Optical Turbulence in Different Channel Conditions

open access: yesIEEE Access
This paper presents a simulation framework for modelling optical underwater turbulence in conjunction with absorption and scattering. Using this technique, the channel is evaluated in two ways: the turbulent statistics in different channel conditions ...
Callum T. Geldard   +2 more
doaj   +1 more source

Comparison of Different Turbulence Models in Open Channels with Smooth-Rough Bedforms [PDF]

open access: yesMehran University Research Journal of Engineering and Technology, 2013
The turbulence models play an important role in all types of computational fluid dynamics based numerical modelling. There is no universal turbulence model which can be applied in all the scenarios.
Usman Ghani, Shahid Ali, Sabahat Arif
doaj  

Global 3D full-scale turbulence simulations of TCV-X21 experiments with SOLEDGE3X

open access: yesNuclear Materials and Energy
First principle modelling of edge plasma turbulence including neutrals and plasma recycling on the wall remains a challenge, in particular due to the long time scales necessary to simulate to reach particle balance.
H. Bufferand   +13 more
doaj   +1 more source

On Modelling Wind-Farm Wake Turbulence Autospectra and Coherence from a Database

open access: yesEnergies, 2018
This study addresses the feasibility of modeling wind-farm wake-turbulence autospectra and coherences from a database: flow velocity points from experimental and computational fluid dynamics (CFD) investigations. Specifically, it first applies an earlier-
Kyle A. Schau   +2 more
doaj   +1 more source

A Calibration Study with CFD Methodology for Self-Propulsion Simulations at Ship Scale

open access: yesJournal of Marine Science and Engineering, 2023
This paper summarises the main findings from the full-scale Computational Fluid Dynamics (CFD) analyses conducted at SINTEF Ocean on the case of MV REGAL, which is one of the benchmark vessels studied in the ongoing joint industry project JoRes.
Vladimir Krasilnikov   +3 more
doaj   +1 more source

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