A Non-equilibrium Approach to Model Flash Dynamics with Interface Transport

Romo Hernandez, Aaron;Dochain, Denis;Hudon, Nicolas;Ydstie, Birger Erik;et.al.
(2018)

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Authors
  • Romo Hernandez, AaronUCLouvain
    Author
  • Dochain, DenisUCLouvain
    Author
  • Hudon, NicolasQueen's University
    Author
  • Ydstie, Birger ErikCMU
    Author
  • et. al.
Abstract
This paper presents a modeling approach for a class of multiphase chemical systems, based on non-equilibrium thermodynamics, specialized to an open flash-drum system. A compartmental model is considered to establish the dynamics of the gas and liquid phases, while a model of interface transport yields to constraints in the model. The overall system is thus written as a Differential-Algebraic system of Equations (DAE). The derived model is shown to be of index one, for which a stability analysis, based on Lyapunov first method, is briefly developed. An example is presented to illustrate the proposed the modeling and stability analysis approach, together with numerical simulations.
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Romo Hernandez, A., Dochain, D., Hudon, N., Ydstie, B. E., & et al. (2018). A Non-equilibrium Approach to Model Flash Dynamics with Interface Transport. IFAC Papers-on-Line, 51(18), 874-879. (Original work published 2018)