Keynote: The Influence of Different Turbulence Models on the Fluid Flow Characteristics in Gas-Stirred Ladles

2019 ◽  
Author(s):  
Q. Cao ◽  
L. Nastac
Keyword(s):  
Fluid Flow ◽  
Flow Characteristics ◽  
Turbulence Models ◽  
Fluid Flow Characteristics

Computational Analysis of Fluid Flow in Pebble Bed Modular Reactor Using Different Turbulence Models

2010 ◽  
Author(s):  
Akshay Gandhir ◽  
Yassin Hassan
Keyword(s):  
Fluid Flow ◽  
Pressure Drop ◽  
Flow Structure ◽  
Computational Study ◽  
Vortex Formation ◽  
Flow Characteristics ◽  
Turbulence Models ◽  
Packed Bed ◽  
Complex Flow ◽  
Fluid Flow Characteristics

A steady state computational study was done to obtain the pressure drop estimation in different packed bed geometries, and describe the fluid flow characteristics for such complex structures. Two out of the three Bravais lattices were analyzed, namely, simple cubic (symmetric) and body centered cubic (staggered). STARCCM+ commercial CFD software from CD-ADAPCO was used to simulate the flow. To account for turbulence effects standard k-epsilon and realizable k-epsilon models were used. Various cases were analyzed with Modified Reynolds number ranging from 10,000 to 50,000. Each model showed different results as far as the velocity and flow structure is concerned. However, for each case the flow structure showed similar features such as vortex formation downstream and between pebbles due to complex flow separation [1]. The pressure drop obtained from each model was found to be in reasonable agreement with the existing data.

Numerical study of influence of casting speed on fluid flow characteristics in the four strand tundish

2021 ◽  
Author(s):  
Kridsanapong Boonpen ◽  
Pruet Kowitwarangkul ◽  
Patiparn Ninpetch ◽  
Nadnapang Phophichit ◽  
Piyapat Chuchuay ◽  
...  
Keyword(s):  
Fluid Flow ◽  
Casting Speed ◽  
Numerical Study ◽  
Flow Characteristics ◽  
Fluid Flow Characteristics
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