Large Eddy Simulation on the Fluid Flow Inside a Conventional Ladle Shroud System

2019 ◽  
Author(s):  
J. Li ◽  
W. Lin ◽  
Q. Liu ◽  
S. Yang ◽  
J. Zhang
Keyword(s):  
Fluid Flow ◽  
Large Eddy Simulation ◽  
Eddy Simulation ◽  
Large Eddy

scholarly journals A Comparative Study of Fluid Flow and Mass Transfer in a Trumpet-Shaped Ladle Shroud Using Large Eddy Simulation

2015 ◽  
Vol 47 (1) ◽  
pp. 495-507 ◽  
Author(s):  
Jiangshan Zhang ◽  
Jingshe Li ◽  
Yi Yan ◽  
Zhixin Chen ◽  
Shufeng Yang ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Fluid Flow ◽  
Large Eddy Simulation ◽  
Comparative Study ◽  
Eddy Simulation ◽  
Large Eddy

scholarly journals Convective heat transfer over a wall mounted cube at different angle of attack using large eddy simulation

2014 ◽  
Vol 18 (suppl.2) ◽  
pp. 301-315
Author(s):  
Habibollah Heidarzadeh ◽  
Mousa Farhadi ◽  
Kurosh Sedighi
Keyword(s):  
Heat Transfer ◽  
Fluid Flow ◽  
Large Eddy Simulation ◽  
Convective Heat Transfer ◽  
Convective Heat ◽  
Angle Of Attack ◽  
Scale Model ◽  
Flow Angle ◽  
Eddy Simulation ◽  
Large Eddy

Turbulent fluid flow and convective heat transfer over the wall mounted cube in different flow angle of attack have been studied numerically using Large Eddy Simulation. Cube faces and plate have a constant heat flux. Dynamic Smagorinsky (DS) subgrid scale model were used in this study. Angles were in the range 0???45 and Reynolds number based on the cube height and free stream velocity was 4200. The numerical simulation results were compared with the experimental data of Nakamura et al [6, 7]. Characteristics of fluid flow field and heat transfer compared for four angles of attack. Flow around the cube was classified to four regimes. Results was represented in the form of time averaged normalized streamwise velocity and Reynolds stress in different positions, temperature contours, local and average Nusselt number over the faces of cube. Local convective heat transfer on cube faces was affected by flow pattern around the cube. The local convective heat transfer from the faces of the cube and plate are directly related to the complex phenomena such as horse shoe vortex, arch vortexes in behind the cube, separation and reattachment. Results show that overall convective heat transfer of cube and mean drag coefficient have maximum and minimum value at ?=0 deg and ?=25 deg respectively.

Large Eddy Simulation of Slurry Erosion in Submerged Impinging Jets

2020 ◽  
Author(s):  
Qiuchen Wang ◽  
Qiyu Huang ◽  
Xu Sun ◽  
Jun Zhang ◽  
Soroor Karimi ◽  
...  
Keyword(s):  
Fluid Flow ◽  
Flow Field ◽  
Large Eddy Simulation ◽  
Turbulence Models ◽  
Impinging Jets ◽  
Erosion Process ◽  
Slurry Erosion ◽  
Eddy Simulation ◽  
Erosion Prediction ◽  
Large Eddy

Abstract Submerged impingement jets are widely used in erosion/corrosion investigation as it is easy to control standoff distance as well as jet angle and flow velocities in experiments. In addition to experiments, typically Computational Fluid Dynamics (CFD) technique has been used to simulate slurry flow in this geometry to investigate erosion process and develop and verify erosion equations. This is done by solving Reynolds Averaged Navier-Stokes (RANS) equations with turbulence models, time-averaged fluid flow is revealed, and thus time-averaged erosion rate can be obtained by tracking particles in the fluid flow field. The current work shows that this seemingly simple flow displays unsteady flow structures in the stagnation zone of the flow field and its effects on erosion process was unclear. In this study, Large Eddy Simulation (LES) is used to simulate unsteady fluid flow in different impingement jets in Eulerian scheme. Then particles are injected randomly in the surface and tracked transiently to simulate unsteady erosion process in Lagrangian scheme. Finally, an erosion equation is used to calculate solid particle erosion rates. The LES Eulerian-Lagrangian erosion modeling are further validated by experimental fluid velocities and erosion profile measured before. It was found the accuracy of erosion prediction of small particles can be improved and unsteady properties can be well resolved by using this method.

Sign in / Sign up

Export Citation Format

Share Document