Results 71 to 80 of about 375 (167)

Energy transfers and spectral eddy viscosity in large-eddy simulations of homogeneous isotropic turbulence: Comparison of dynamic Smagorinsky and multiscale models over a range of discretizations

Physics of Fluids, 2004
Energy transfers within large-eddy simulation (LES) and direct numerical simulation (DNS) grids are studied. The spectral eddy viscosity for conventional dynamic Smagorinsky and variational multiscale LES methods are compared with DNS results. Both models underestimate the DNS results for a very coarse LES, but the dynamic Smagorinsky model is ...
Hughes, T.J.R. (author), Wells, G.N. (author), Wray, A.A. (author)   +2 more
openaire   +4 more sources

CFD Simulation of Particle-Laden Flow in a 3D Differentially Heated Cavity Using Coarse Large Eddy Simulation. [PDF]

Flow Turbul Combust, 2022
Sayed MA, Dehbi A, Hadžiabić M, Ničeno B, Mikityuk K.   +4 more
europepmc   +1 more source

Numerical Investigation of Flow through a Valve during Charge Intake in a DISI -Engine Using Large Eddy Simulation

Energies, 2019
Apart from electric vehicles, most internal combustion (IC) engines are powered while burning petroleum-based fossil or alternative fuels after mixing with inducted air.
Kaushal Nishad, Florian Ries, Yongxiang Li, Amsini Sadiki   +3 more
doaj   +1 more source

LES of Flow past Circular Cylinder at Re = 3900

Journal of Applied Fluid Mechanics, 2016
Transitional flow past a circular cylinder in the lower subcritical regime (Re = 3900) has been analysed using Large Eddy Simulation (LES) coupled to Smagorinsky and dynamic sub grid scale models.
B.N Rajani, A Kandasamy, Sekhar Majumdar
doaj  

Numerical Investigation of Very Low Reynolds Cross Orifice Jet for Personalized Ventilation Applications in Aircraft Cabins. [PDF]

Int J Environ Res Public Health, 2022
Bode FI, Nastase I.
europepmc   +1 more source

Double time-relaxation kinetic model for compressible turbulence modeling

Advances in Aerodynamics
In this paper, a double time-relaxation kinetic model (DtrKM) is proposed for compressible turbulence modeling on unresolved grids. Within the double time-relaxation framework, DtrKM is extended in the form of generalized Bhatnagar-Gross-Krook model ...
Guiyu Cao, Liang Pan, Kun Xu, Shiyi Chen
doaj   +1 more source

Presence of Holmboe waves in particle-laden intrusive gravity current. [PDF]

Sci Rep, 2023
Rostami Dehjalali S, Khavasi E, Nazmi P.
europepmc   +1 more source

Computational Fluid Dynamics Modelling of a Midlatitude Small Scale upper Ocean Front

Journal of Applied Fluid Mechanics, 2016
A numerical model is implemented to describe fluid dynamic processes associated with mid-latitude small- scale (10 km) upper ocean fronts by using modified state of the art computational fluid dynamics tools. A periodic system was simulated using three
Pablo Cornejo, Hector H Sepúlveda
doaj  

Heat transfer characteristics of a backward-facing step combustor

Applications in Energy and Combustion Science
Large eddy simulations (LES) are conducted in this study to understand the convective and radiative heat transfer characteristics within a backward-facing step combustor.
Jonathan C. Denman, Xinyu Zhao, Jennifer Colborn, Jacqueline O’Connor   +3 more
doaj   +1 more source

Numerical Simulation for Aerodynamic Parameters of Bridge Decks Using MRT-LBM-LES

工程科学与技术, 2013
:For simulating high Reynolds flows around bridge decks effectively, as well as expanding the application of the lattice Boltzmann method (LBM) in bridge wind resistance, dynamic Smagorinsky sub-grid-scale model was embedded into the multiple relaxation ...
刘克同, 汤爱平, 刘玥君, 曹鹏
doaj