Results 51 to 60 of about 11,201 (183)
FluidsTraditional hybrid RANS/LES methods often struggle to accurately capture both the boundary layer transition and flow separation simultaneously due to their reliance on fully turbulent RANS models.
Sandip Ghimire, Xiang Ni, Yue Wang
doaj +1 more source
Determination of wind turbine far wake using actuator disk [PDF]
, 2014 The growth in size of wind turbines over the last years is significant. The rotor diameter becomes somehow comparable to atmospheric boundary layer at the land surface. In this case the assumption of uniform velocity of upcoming wind cannot be valid. The
AMER, Rodeyna +2 more
core +3 more sources
Lagrangian stochastic modeling of acceleration in turbulent wall-bounded flows
, 2019 The Lagrangian approach is natural to study issues of turbulent dispersion and mixing. We propose in this work a general Lagrangian stochastic model including velocity and acceleration as dynamical variables for inhomogeneous turbulent flows.
Chibbaro, Sergio +3 more
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A Hybrid RANS/LES Approach for Predicting Jet Noise [PDF]
Hybrid acoustic prediction methods have an important advantage over the current Reynolds averaged Navier-Stokes (RANS) based methods in that they only involve modeling of the relatively universal subscale motion and not the configuration dependent larger
Goldstein, Marvin E.
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Efficient prediction of broadband trailing edge noise and application to porous edge treatment [PDF]
, 2018 Trailing edge noise generated by turbulent flow traveling past an edge of an airfoil is one of the most essential aeroacoustic sound generation mechanisms. It is of great interest for noise problems in various areas of industrial application.
Delfs, Jan +3 more
core +1 more source
Comparative CFD simulations of a hydrogen fire scenario [PDF]
, 2017 Hydrogen leakage and fire ignition and propagation are safety concerns in several industrial plants. In a nuclear fusion power plants the separation of hydrogen and tritium takes place in different steps, among which one or more electrolyzers are ...
Caruso, Gianfranco, Nobili, Matteo
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Model-Invariant Hybrid RANS-LES Computations on Unstructured Meshes [PDF]
Hybrid RANS-LES computations combine the bene ts of RANS and LES so that LES is used in regions where the accuracy of RANS deteriorates. The numerous hybrid approaches are limited by the speci cation of the LES-RANS interface, which can cause nonphysical
Sreekanth, R., Woodruff, Stephen L.
core +1 more source
Wall-Modeled Lattice Boltzmann and Navier-Stokes Approaches for Separated Flows [PDF]
Lattice Boltzmann (LB) and hybrid Reynolds-averaged Navier-Stokes/large eddy simulation (RANS/LES) methods within the Launch Ascent and Vehicle Aerodynamics (LAVA) solver framework are applied to NASA's Revolutionary Computational Aerosciences (RCA ...
Barad, Michael +6 more
core +1 more source
Lagrangian filtered density function for LES-based stochastic modelling of turbulent dispersed flows
, 2016 The Eulerian-Lagrangian approach based on Large-Eddy Simulation (LES) is one of the most promising and viable numerical tools to study turbulent dispersed flows when the computational cost of Direct Numerical Simulation (DNS) becomes too expensive.
Alessio Innocenti +9 more
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Large Eddy/Reynolds-Averaged Navier-Stokes Simulations of CUBRC Base Heating Experiments [PDF]
ven with great advances in computational techniques and computing power during recent decades, the modeling of unsteady separated flows, such as those encountered in the wake of a re-entry vehicle, continues to be one of the most challenging problems in ...
Amar, Adam J. +2 more
core +1 more source