Qualitative comparison of bubble evolution in a two dimensional gas-solid fluidized bed using image analysis and CFD model

Vishwanath, Panangipalli; Das, Subrat; Fabijanic, Daniel; Hodgson, Peter

doi:10.1016/j.matpr.2017.05.039

Cited by 4 publications

(1 citation statement)

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“…Recently, the study on the hydrodynamics of gas‐solid fluidized bed using CFD simulation has become popular in this field, due to the factors such as possibility, accuracy, time, and cost. CFD simulation coupling various numerical models can predict the hydrodynamic behavior of gas bubbles 2, 14, and the simulation results can illustrate the effect of bubble behavior on the fluidization process.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Bubble Behavior in Gas‐Solid Fluidized Beds with Different Gas Distributors

Jang

Feng

2021

Chem Eng & Technol

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The behavior of gas bubbles in a gas‐solid fluidized bed was investigated by computational fluid dynamics simulation. A two‐phase flow model incorporating the kinetic theory of granular flow was used to study the effect of gas distributor design on the size distribution and the rise velocity of gas bubbles in the bed column. The experiments were conducted on four gas distributors with different orifice sizes and pitches. The geometry of the gas distributor had a significant influence on the bubble behavior in the gas‐solid fluidized bed. The effects of static bed height and superficial gas velocity were also considered. Bubble diameter and bubble rise velocity increased with gas velocity. However, at low bed height, the deviation in bubble size was indistinct because at higher gas velocity the rising tendency of the bubble formed just above the gas distributor increased and the probability of bubble coalescence decreased.

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Section: Introductionmentioning

confidence: 99%