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首页> 外文会议>Proceedings '96 China-Japan symjposium on particuology >A STUDY ON GAS FLOW BEHAVIOUR FROM TWO NOZZLES
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A STUDY ON GAS FLOW BEHAVIOUR FROM TWO NOZZLES

机译：两个喷嘴的气体流动特性研究

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摘要

Gas flow behaviour from two nozzles was studied by means of pitot tabe method in a packed or an incipiently fluidized bed of a Geldart's B particles. A theoretical model for estimating the critical separation of nozzles in the packed bed was proposed and proved successfully by experimental results, it was found that there were two types of the momentum distribution along the horizontal direction outside of the jet penetration region, those are single peak and double peaks. It was shown that bubbles in the fluidized bed coalesced much easily than that in the packed bed. Finally, the relation between the bubble merger strength (λ), first defined in this paper, and the nozzle separation and the exit velocity was discussed both qualitatively and quantitatively.
机译：通过皮托管方法在Geldart的B粒子的填充床或初期流化床中研究了来自两个喷嘴的气流行为。提出了估算填充床中喷嘴临界分离的理论模型，并通过实验结果进行了验证，发现在射流穿透区域外沿水平方向有两种动量分布，即单峰。和双峰。结果表明，流化床中的气泡比填充床中的气泡容易聚结。最后，定性和定量地讨论了本文首先定义的气泡合并强度（λ）与喷嘴间距和出口速度之间的关系。

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