Results 41 to 50 of about 6,939 (199)

Comparison of Different Turbulent Models in Flow on a Rotating Airfoil Considering Centrifugal Acceleration Force, Coriolis Force and Thermal Dissipation [PDF]

Journal of Heat and Mass Transfer Research
The moving blades in a circular path have many industrial applications, in more modern turbo machines, such as jet engine compressors, the flow conditions are completely incompressible.
Iraj Fazeli Farsani, Bahman Asadi
doaj   +1 more source

A Mapping Model of Propeller RANS and LES Flow Fields Based on Deep Learning Methods

Applied Sciences, 2023
In this work, we propose a deep-learning-based mapping model for simulating and predicting the flow field of Reynolds-averaged Navier–Stokes (RANS) and large eddy simulation (LES) of propellers.
Jianhai Jin, Yuhuang Ye, Xiaohe Li, Liang Li, Min Shan, Jun Sun   +5 more
doaj   +1 more source

Impact of Underlying RANS Turbulence Models in Zonal Detached Eddy Simulation: Application to a Compressor Rotor

International Journal of Turbomachinery, Propulsion and Power, 2020
The present study focuses on the impact of the underlying RANS turbulence model in the Zonal Detached Eddy Simulation (ZDES) method when used for secondary flow prediction.
Julien Marty, Cédric Uribe
doaj   +1 more source

Unsteady CFD Analysis of a Delta Wing Fighter Configuration by Delayed Detached Eddy Simulation [PDF]

, 2008
While the flow physics of generic delta wings with sharp leading edges are largely understood, realistic configurations with rounded leading edges and canards are still of scientific and industrial interest.
Leicher, S., Lüdeke, H.
core  

A Hybrid-Filter Approach to Turbulence Simulation [PDF]

, 2010
Germano (Theor Comput Fluid Dyn 17:225–331, 2004) proposed a hybrid-filter approach, which additively combines an LES-like filter operator (F) and a RANS-like statistical operator (E) using a blending function k: H = kF + (1 − k)E.
Bernie Rajamani, John Kim
core   +2 more sources

A semi-implicit discrepancy model of Reynolds stress in a higher-order tensor basis framework for Reynolds-averaged Navier–Stokes simulations

AIP Advances, 2021
With the rapid development of artificial intelligence, machine learning algorithms are becoming more widely applied in the modification of turbulence models. In this paper, with the aim of improving the prediction accuracy of the Reynolds-averaged Navier–
Zhen Zhang, Shuran Ye, Bo Yin, Xudong Song, Yiwei Wang, Chenguang Huang, Yaosong Chen   +6 more
doaj   +1 more source

Adaptive Embedded LES of the NASA Hump [PDF]

A scheme for adaptive embedded LES is proposed which automatically determines boundaries for LES regions in a hybrid LES-RANS computation, with the goal of minimizing the LES part of the computation for maximum accuracy with minimum cost.
Spalart P., Version V, Woodruff S. L.
core   +2 more sources

Large-Eddy Simulation: Current Capabilities, Recommended Practices, and Future Research [PDF]

, 2010
This paper presents the results of an activity by the Large Eddy Simulation (LES) Working Group of the AIAA Fluid Dynamics Technical Committee to (1) address the current capabilities of LES, (2) outline recommended practices and key considerations for ...
Akselvoll K., Berglund M., Bodony D. J., Fureby C., Maas U., Mavripilis D. J., Peters N., Piomelli U., Pope S. B., Spalart P. R., Spalart P. R., Uribe J., Visbal M. R.   +12 more
core   +2 more sources

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

Impact of Porous Media on Boundary Layer Turbulence

Fluids, 2022
The subsonic flows around NACA 0012 aerofoils with a solid, a porous, and a poro-serrated trailing edge (TE) at a Reynolds number of 1 × 106 are investigated by a hybrid Reynolds-averaged Navier–Stokes (RANS)/large-eddy simulation (LES) approach.
Sutharsan Satcunanathan, Matthias Meinke, Wolfgang Schröder   +2 more
doaj   +1 more source