本文選題：粉體揚塵　切入點：氣固耦合　出處：《包裝工程》2017年07期 　論文類型：期刊論文

【摘要】：目的在不同充填高度下探究粉體揚塵的影響因素和分布規(guī)律。方法基于氣固耦合機理,分析粉體在袋裝充填時與空氣的相互作用。采用Fluent軟件,選擇κ-ε湍流模型與離散相模型模擬粉體下落揚塵過程。將顆粒濃度、空氣流速和顆粒追蹤占比3項作為分析依據,確定粉體充填的合理高度。結果揚塵主要由卷吸空氣引起,在粉袋內顆粒會產生大量回流;粉體距袋口80~480 mm時充填揚塵量最小。結論通過改變袋裝充填的充填高度能有效減少粉塵的產生。
[Abstract]:Objective to investigate the influencing factors and distribution of powder dust at different filling heights. Methods based on the gas-solid coupling mechanism, the interaction between powder and air during packing and filling was analyzed. Fluent software was used. 魏-蔚 turbulence model and discrete phase model were selected to simulate the falling dust process of powder. The reasonable height of powder filling was determined based on three items: particle concentration, air velocity and particle tracing ratio. Results the dust was mainly caused by entrainment air. A large amount of reflux will be produced in the powder bag, and the dust volume will be minimized when the powder is 80 ~ 480 mm away from the bag mouth. Conclusion the dust generation can be effectively reduced by changing the filling height of the bag filling.
【作者單位】： 江南大學;江蘇省食品先進制造裝備技術重點實驗室;
【分類號】：TB48
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本文編號：1648028