Results 41 to 50 of about 20,987 (146)

Continuous Eddy Simulation (CES) of Transonic Shock-Induced Flow Separation

open access: yesApplied Sciences
Reynolds-averaged Navier–Stokes (RANS), large eddy simulation (LES), and hybrid RANS-LES, first of all wall-modeled LES (WMLES) and detached eddy simulation (DES) methods, are regularly applied for wall-bounded turbulent flow simulations.
Adeyemi Fagbade, Stefan Heinz
doaj   +1 more source

Assessment of Numerical Methods for Plunging Breaking Wave Predictions

open access: yesJournal of Marine Science and Engineering, 2021
This study evaluates the capability of Navier–Stokes solvers in predicting forward and backward plunging breaking, including assessment of the effect of grid resolution, turbulence model, and VoF, CLSVoF interface models on predictions. For this purpose,
Shanti Bhushan   +4 more
doaj   +1 more source

Transition models for turbomachinery boundary layer flows : a review [PDF]

open access: yes, 2017
Current models for transition in turbomachinery boundary layer flows are reviewed. The basic physical mechanisms of transition processes and the way these processes are expressed by model ingredients are discussed.
Dick, Erik, Kubacki, Slawomir
core   +2 more sources

Nonlinear Numerical Simulation for Oscillating Pressure in Cavity and Passive Control Research

open access: yesInternational Journal of Aerospace Engineering, 2019
Prediction of oscillating pressure is a key technology for cavity research. Nonlinear Acoustic Solver (NLAS) is applied to analyze aeroacoustics recently.
Binqi Chen, Yiding Wang
doaj   +1 more source

Numerical Simulation of the Flow around NACA0018 Airfoil at High Incidences by Using RANS and DES Methods

open access: yesJournal of Marine Science and Engineering, 2022
In this work, the flow around the NACA0018 airfoil with a wide range of attack angles was investigated based on the open-source computational fluid dynamics (CFD) platform OpenFOAM.
Haipeng Guo, Guangnian Li, Zaojian Zou
doaj   +1 more source

Computational Modelling of Wing Downwash Profile with Reynolds-Averaged and Delayed Detached-Eddy Simulations [PDF]

open access: yes, 2017
This paper describes the computational model to predict downwash for a conventional fixed wing configuration at flight scales (ReMAC = 2.26 × 107 ). The lack of resolution in the downwash wake region resulted in an over-dissipation of the turbulent ...
Srigrarom, Sutthiphong   +2 more
core   +1 more source

Extension of a discontinuous Galerkin finite element method to viscous rotor flow simulations [PDF]

open access: yes, 2005
Heavy vibratory loading of rotorcraft is relevant for many operational aspects of helicopters, such as the structural life span of (rotating) components, operational availability, the pilot's comfort, and the effectiveness of weapon targeting systems.
Boelens, O.J.   +4 more
core   +6 more sources

Computational fluid dynamics challenges for hybrid air vehicle applications [PDF]

open access: yes, 2017
This paper begins by comparing turbulence models for the prediction of hybrid air vehicle (HAV) flows. A 6 : 1 prolate spheroid is employed for validation of the computational fluid dynamics (CFD) method.
Barakos, G.N.   +4 more
core   +2 more sources

The Potential of Machine Learning Methods for Separated Turbulent Flow Simulations: Classical Versus Dynamic Methods

open access: yesFluids
Feasible and reliable predictions of separated turbulent flows are a requirement to successfully address the majority of aerospace and wind energy problems. Existing computational approaches such as large eddy simulation (LES) or Reynolds-averaged Navier–
Stefan Heinz
doaj   +1 more source

Local Entropy Generation in Compressible Flow through a High Pressure Turbine with Delayed Detached Eddy Simulation

open access: yesEntropy, 2017
Gas turbines are important energy-converting equipment in many industries. The flow inside gas turbines is very complicated and the knowledge about the flow loss mechanism is critical to the advanced design.
Dun Lin, Xin Yuan, Xinrong Su
doaj   +1 more source

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