Effect of Operating Parameters on Gas‐Solid Hydrodynamics and Heat Transfer in a Spouted Bed. Issue 11 (26th July 2019)

• Record Type: Journal Article
• Authors: Luo, Kun; Lin, Junjie; Wang, Shuai; Hu, Chenshu; Fan, Jianren
• Is Part Of: Chemical engineering & technology. Volume 42:Issue 11(2019)
• Page Start: 2310
• Page End: 2320
• Publication Date: 2019-07-26
• Subjects: Discrete element method -- Gas‐solid flows -- Heat transfer -- Large‐eddy simulation -- Spouted beds; Chemical engineering -- Periodicals; Chemical processes -- Periodicals; 660.05
• DOI: 10.1002/ceat.201800223
• Languages: English
• ISSNs: 0930-7516

Abstract

Abstract: Through a combined computational fluid dynamics and discrete element method approach, the effect of the operating parameters on the hydrodynamics and heat‐transfer properties of gas‐solid two‐phase flows in a spouted bed are extensively investigated. Considering the high velocity in the fountain region, gas turbulence is resolved by employing the large‐eddy simulation. The rolling friction model is adopted for more precise predictions of solid behavior near the wall. Subsequently, the gas‐solid flow patterns, gas‐solid velocities, and temperature evolution are investigated. Moreover, different operating conditions and geometry configurations are evaluated with respect to heat‐transfer performance. The results provide a fundamental understanding of heat‐transfer mechanisms in spouted beds. Abstract : The spouted bed has advantages of excellent mixing performance and high efficiency of heat transfer. The effects of various operating parameters on the hydrodynamic and heat‐transfer behavior are extensively investigated in a gas‐solid two‐phase spouted bed through a combined computational fluid dynamics and discrete element method approach.