Influence des collisions dans un écoulement gaz–solide anisotherme en conduite verticale et horizontaleOn the influence of collisions in a turbulent non-isothermal gas–solid flow in vertical and horizontal pipes

2003 ◽  
Vol 4 (4) ◽  
pp. 385-389
Author(s):  
V Chagras
Keyword(s):  
Solid Flow ◽  
Horizontal Pipes ◽  
Isothermal Gas

Experimental and Numerical Study of Cold Gas-Solid Flow Regimes in a Fluidized Bed Gasifier

2017 ◽  
Author(s):  
Anton Pylypenko ◽  
Yevgenii Rastigejev ◽  
Lijun Wang ◽  
Abolghasem Shahbazi
Keyword(s):  
Fluidized Bed ◽  
Numerical Study ◽  
Three Dimensional ◽  
Operating Conditions ◽  
Silica Sand ◽  
State University ◽  
Solid Flow ◽  
Fluidized Bed Gasifier ◽  
Isothermal Gas ◽  
Cold Gas

The objective of this work is to analyze the dynamics and regimes of cold gas-solid flow in a biomass gasifier that is built at North Carolina Agricultural and Technical State University and to identify its corresponding ranges of operating conditions. The value of the minimum fluidization velocity Umf ≈ 8 cm/s has been found experimentally in a series of measurements of a pressure drop in the fluidized bed filled with Gledart type-B silica sand for the range of superficial gas velocities between 0 and 40 cm/s. To complement the experimental results, a set of three-dimensional numerical simulations of the isothermal gas-solid flow based on Eulerian-Eulerian approach has been performed. The analysis of the fluidization characteristics such as axial void fraction distributions has allowed us to evaluate the dependence of the bed expansion ratios from the flow superficial velocity. Good agreement between experimental and numerical results for the considered operating conditions of the gasifier has been observed.

Modeling and numerical investigation of erosion rate for turbulent two-phase gas–solid flow in horizontal pipes

2014 ◽  
Vol 267 ◽  
pp. 362-370 ◽  
Author(s):  
M. Jafari ◽  
Z. Mansoori ◽  
M. Saffar Avval ◽  
G. Ahmadi ◽  
A. Ebadi
Keyword(s):  
Numerical Investigation ◽  
Erosion Rate ◽  
Two Phase ◽  
Solid Flow ◽  
Horizontal Pipes

scholarly journals Implementation of pseudo-turbulence closures in an Eulerian–Eulerian two-fluid model for non-isothermal gas–solid flow

2019 ◽  
Vol 207 ◽  
pp. 663-671 ◽  
Author(s):  
C. Peng ◽  
B. Kong ◽  
J. Zhou ◽  
B. Sun ◽  
A. Passalacqua ◽  
...  
Keyword(s):  
Fluid Model ◽  
Solid Flow ◽  
Turbulence Closures ◽  
Two Fluid Model ◽  
Isothermal Gas ◽  
Two Fluid

A computational investigation of non-isothermal gas–solid flow in a U-bend

2007 ◽  
Vol 175 (2) ◽  
pp. 104-114 ◽  
Author(s):  
Muslikhin Hidayat ◽  
Anders Rasmuson
Keyword(s):  
Computational Investigation ◽  
Solid Flow ◽  
Isothermal Gas
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