Stability analysis of bubble columns: predictions for regime transition

Bhole, Manish R. ; Joshi, Jyeshtharaj B. (2005) Stability analysis of bubble columns: predictions for regime transition Chemical Engineering Science, 60 (16). pp. 4493-4507. ISSN 0009-2509

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A criterion for the transition from the homogeneous to the heterogeneous regime in a bubble column is developed based on the theory of linear stability. Hydrodynamics of bubble column is described by two-fluid model incorporating the interphase forces like drag force and added mass force. Added mass force affects the hydrodynamics of gas-liquid flows significantly and is formulated by taking into account the bubble deformation. A proper understanding of the nature of gas-liquid interface (clean or contaminated) is desired for the reliable predictions of the added mass coefficient. Data from the literature on the transition in bubble columns is critically analyzed. A good agreement has been obtained between the experimental transition gas hold-up and the predictions of the same obtained by the theory developed in this work.

Item Type:Article
Source:Copyright of this article belongs to Elsevier Science.
Keywords:Bubble Column; Flow Regime; Transition; Linear Stability; Added Mass Force
ID Code:60180
Deposited On:08 Sep 2011 09:51
Last Modified:08 Sep 2011 09:51

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