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首页> 外文会议>Second Biot Conference on Poromechanics Aug 26-28, 2002 Grenoble, France >Eulerian two-fluid modeling applied to one-dimensional bubbly flows in packed beds
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Eulerian two-fluid modeling applied to one-dimensional bubbly flows in packed beds

机译：欧拉两流体建模应用于填充床中的一维气泡流

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摘要

Only recently has Eulerian two-fluid modeling been considered for describing dispersed flows in chemical contactors. The most significant contribution, made by Attou et al (1999) provided substantial improvement in the understanding of the origin of pressure drop. However, it happens that the mechanical balances as well as the closure laws proposed by these authors need to be reconsidered. Based on the hybrid approach, a new 1-D model has been derived that leads to a new equilibrium for the gas phase. By revisiting available data on pressured drop and void fraction, and using new experimental evidence gathered on bubble size and velocities, new closures are proposed for the gas-liquid interfacial momentum ransfer. Refined experiments at higher gas flow rates are needed to fully validate these proposals.
机译：直到最近才考虑使用欧拉二流体模型来描述化学接触器中的分散流。 Attou等人（1999）所做的最重要的贡献在对压降起源的理解上有了实质性的改进。但是，碰巧需要重新考虑这些作者提出的机械平衡以及闭合规律。基于混合方法，推导了一种新的1-D模型，该模型导致了气相的新平衡。通过回顾有关压降和空隙率的可用数据，并利用收集到的有关气泡大小和速度的新实验证据，提出了针对气液界面动量转移的新方法。需要以更高的气体流速进行精细的实验，以充分验证这些建议。

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