Shanwen Tan, Zhengui Li
In the study, we proposed a computational method for solving the turbulence problem of incompressible viscous Newtonian fluids based on extended Navier–Stokes (N–S) equations. With several phenomenological observations and H. J. Kreuer’s interpretation of the origin of viscosity, we make a hypothesis that the shear process in fluid flow is accompanied by eddy formation, and considering the influence of eddies on convection and diffusion, the classical N–S equations have been improved to obtain the extended N–S equations. The extended equations are closed, and the source of the velocity fluctuations being explicitly considered to be additional convection and diffusion. The extended equations are compatible with the classical N–S equations and can describe laminar and turbulent flows in a unified manner. In fluid flow simulations, the equations describing the mean flow quantities can be obtained directly from the extended N–S equations without any additional turbulence models. The flow over a cube placed in a channel was numerically investigated to verify the extended equation, the simulation results agreeing well with the Large Eddy Simulation (LES) and experimental results.
@article{96501722-2612-44dc-8c6d-2dc91ca17dd6,
title={Turbulence Calculation Based on the Extended},
author={Shanwen Tan and Zhengui Li},
year={1998},
language={English}
}TY - JOUR TI - Turbulence Calculation Based on the Extended AU - Shanwen Tan AU - Zhengui Li PY - 1998 LA - English ER -
Haouari Khadra, Rahmani Kouider
Industrial applications need to use different systems for the problem of gas cleaning. A lot of processes have been developed, such as the use of a ve
Xin Liu, Jiachen Zhu
The evolution of microstructures during the hot working of metallic materials determines their workability and properties. Recrystallization is an imp
Yevhen Synehin, Volodymyr Ruban
This study investigates the process that forms centerline porosity in the axial zone of a continuously cast steel billet during its hardening. The tas
Öznur KILIÇ, Prof. Dr. Kerem Altuğ GÜLER
In this study, different melting and refining strategies were applied to G17CrMo5-5 cast steel in order to evaluate their influence on inclusion evolu
Fuhai LIU, Tantong SHI
The study explores the application of the CO2 bottom-blowing method in the 120t LF (Ladle Furnace) refining process to improve metallurgical outcomes.