Results 31 to 40 of about 20,987 (146)

Direct Numerical Simulations of the Navier-Stokes Alpha Model

, 1999
We explore the utility of the recently proposed alpha equations in providing a subgrid model for fluid turbulence. Our principal results are comparisons of direct numerical simulations of fluid turbulence using several values of the parameter alpha ...
Andrews, Ashurst, Borue, Camassa, Cao, Chen, Chen, Chorin, Cioranescu, Cioranescu, Dunn, Dunn, Dunn, Holm, Holm, Kolmogorov, Kolmogorov, Lesieur, Rivlin, Rubinstein, Shin, Wang, Yoshizawa   +22 more
core   +2 more sources

Inertial Frame Independent Forcing for Discrete Velocity Boltzmann Equation: Implications for Filtered Turbulence Simulation [PDF]

, 2012
We present a systematic derivation of a model based on the central moment lattice Boltzmann equation that rigorously maintains Galilean invariance of forces to simulate inertial frame independent flow fields.
Ansumali, Chapman, Chen, Chenand, Dubois, d’Humières, Harris, Hou, Kannan N. Premnath, Kogan, Monin, Müller, Premnath, Sanjoy Banerjee, Struchtrup, Succi, Truesdell   +16 more
core   +1 more source

Predicting wind turbine blade loads using vorticity transport and RANS methodologies [PDF]

, 2009
Two computational methods, one based on the solution of the vorticity transport equation, and a second based on the solution of the Reynolds-Averaged Navier-Stokes equations, have been used to simulate the aerodynamic performance of a horizontal axis ...
Brown, Richard, Fletcher, Timothy M., Kim, Da Hye, Kwon, Oh Joon   +3 more
core   +3 more sources

Comparisons of LES and RANS Computations with PIV Experiments on a Cylindrical Cavity Flow

Advances in Mechanical Engineering, 2013
A comparison study on the numerical computations by large eddy simulation (LES) and Reynolds-averaged Navier-Stokes (RANS) methods with experiment on a cylindrical cavity flow was conducted in this paper.
Wen-Tao Su, Xiao-Bin Li, Feng-Chen Li, Xian-Zhu Wei, Zhi-Ying Zheng, Xin Zhang   +5 more
doaj   +1 more source

A spray painting simulation using high-speed rotary Atomizer—Model development and comparison of LES and RANS—

Results in Engineering
This study performed a spray-painting simulation based on the Large Eddy Simulation (LES) and Reynolds-Averaged Navier-Stokes (RANS) for spray painting using a rotary atomizer.
Yohsuke Matsushita, Tomoyuki Katayama, Yasuhiro Saito, Yoshiya Matsukawa, Takahiro Okabe, Minori Shirota, Takao Inamura, Masatoshi Daikoku, Junichi Fukuno, Hideyuki Aoki   +9 more
doaj   +1 more source

A Review of Solution Stabilization Techniques for RANS CFD Solvers

Aerospace, 2023
Nonlinear, time-linearized and adjoint Reynolds-averaged Navier-Stokes (RANS) computational fluid dynamics (CFD) solvers are widely used to assess and improve the aerodynamic and aeroelastic performance of aircrafts and turbomachines.
Shenren Xu, Jiazi Zhao, Hangkong Wu, Sen Zhang, Jens-Dominik Müller, Huang Huang, Mohammad Rahmati, Dingxi Wang   +7 more
doaj   +1 more source

Experimental Techniques against RANS Method in a Fully Developed Turbulent Pipe Flow: Evolution of Experimental and Computational Methods for the Study of Turbulence

Fluids, 2022
Fully developed turbulent flow in a pipe was studied by considering experimental and computational methods. The aim of this work was to build on the legacy of the University of Manchester, which is widely regarded as the birthplace of turbulence due to ...
Gabriela Lopez-Santana, Andrew Kennaugh, Amir Keshmiri   +2 more
doaj   +1 more source

Numerical Simulation of a Turbulent Flow in a Channel with Surface Mounted Cubes [PDF]

, 1998
In this paper we report on a fourth-order, spectro-consistent simulation of a complex turbulent flow. A spatial discretization of a convection-diffusion equation is termed spectro-consistent if the spectral properties of the convective and diffusive ...
Veldman, A.E.P.,, Verstappen, R.W.C.P.,
core   +1 more source

Vorticity-transport and unstructured RANS investigation of rotor-fuselage interactions [PDF]

, 2009
The prediction capabilities of unstructured primitive-variable and vorticity-transport-based Navier-Stokes solvers have been compared for rotorcraft-fuselage interaction.
Brown, Richard, Kenyon, Adam R., Shenoy, Rajiv, Smith, Marilyn J.   +3 more
core  

Analysis of liquid steel flow in a multi-strand tundish using numerical methods

Metalurgija, 2015
The article presents the results of liquid steel flow and mixing in tundish when applying turbulence inhibitor to modernize the tundish working zone.
P. Warzecha, M. Warzecha, T. Merder
doaj