頁籤選單縮合
題 名 | Numerical Simulation of Evaporating Crossflow Sprays in Gas-Solids Circulating Fluidized Beds |
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作 者 | Lee, Tong H.; Zhu, Chao; | 書刊名 | Journal of the Chinese Institute of Chemical Engineers |
卷 期 | 36:1 民94.01 |
頁 次 | 頁43-48 |
分類號 | 460.24 |
關鍵詞 | Numerical simulation; Cross-flow spray; Evaporation; Gas-solids fluidized bed; |
語 文 | 英文(English) |
英文摘要 | A hybrid Eulerian-Lagrangian method has been applied to simulate the 3-D flow structure wit an evaporating liquid spray (liquid nitrogen) injected into a gas-solids (FCC) circulating fluidized bed of rectangular cross-section. The gas-solid flows are simulated using the multi-fluid method while the sprays are described using Lagrangian trajectory method. our simulation shows that the spray penetration is significantly affected by the solids loading. It is found that, due to the strong cross-flow convention, the temperature contours of gas and solids phases, as well as the vapor region, deviate away from the spray region. The simulation also shows that the spray evaporation leads to a very low solids concentration within the vapor region while there is a dense layer of solids surrounding the vapor region. These simulation results agree with our experimental observations and measurements. |
本系統中英文摘要資訊取自各篇刊載內容。