Abstract

This paper describes the development of a simulation tool for the rapid depressurization (blowdown) of vessels containing two-pliase mixtures in non equilibrium conditions. The model adopts the cubic equations of state for fluids mixtures with non ideal behavior for booth the phases, i.e. vapor and liquid, and it is based on a split two fluids model considering internal heat and mass transfer processes, as well as heat transfer with the vessel wall and the external environment. In order to account the mass and energy exchanged between the gas and the liquid phase, in conditions away from the thermodynamic equilibrium, a partial phase equilibrium (PPE) type approach has been introduced.

In this paper the validation of the proposed model with two different literature test cases is addressed and the role of the Peneloux correction for the employed equation of state is also investigated.

Details

Title
An unsteady model for the simulation of the rapid depressurization of vessels containing two-phase mixtures in non-equilibrium conditions
Author
Ricci, R 1 ; D'Alessandro, V 1 ; Montelpare, S 2 ; Binci, L 1 ; Zoppi, A 1 

 Dipartimento di Ingegneria Industriale e Scienze Matematiche Università Politecnica delle Marclie, Via Brecce Blanche, 60100 Ancona (AN), Italy 
 Dipartimento di Ingegneria e Geologia, Università degli Studi "G. D'Annuzio" di Cliieti Pescara Viale Pindaro 42. 65127, Pescara (PE), Italy 
Publication year
2015
Publication date
Nov 2015
Publisher
IOP Publishing
ISSN
17426588
e-ISSN
17426596
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2576531683
Copyright
© 2015. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.