Compressible Flow Modeling in Pipes and Porous Media during Blowdown Experiment
A numerical model is developed to simulate gas blowdowns through a thin tube and a filter (porous media), separating a high pressure gas filled reservoir to low pressure ones. Based on a previous work, a one-dimensional approach is developed by using the finite element method to solve the transient compressible flow and to predict the pressure and temperature evolution in space and time. Mass, momentum, and energy conservation equations are solved in a fully coupled way in the reservoirs, the pipes and the porous media. Numerical results, such as pressure and temperature evolutions, are firstly compared with experimental data to validate the model for different configurations. Couplings between porous media and pipe flow are then validated by checking mass balance. The influence of the porous media and the nature of the gas is then studied for different initial high pressure values.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1317066Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 897
 V. Bruyere, T. Paris, F. Viry, P. Namy, Compressible Flow Modeling Occurring in a Depressurization Process, Proceedings of the 2017 Comsol Conference, Rotterdam, 2017.
 S. W. Churchill, Friction factor equation spans all fluid-flow regimes, 1977, pp. 91-92.
 A. Lallemand, Ecoulements monodimensionnels des fluides compressibles, Techniques de l'ingénieur, 2014.
 S. Charton, V. Blet and J. P. Corriou, A Simplified Model for Real Gas Expansion Between Two Reservoirs Connected by a Thin Tube, vol. 51, 1996, pp. 295-308.
 Kozeny J., Uber Kapillare Leitung des Wassers im Boden, Sitzungsber. Akad. Wiss. Wien, Vol 136, pp. 271–306, 1927.
 Carman P C., Flow of Gases Through Porous Media, Butterworths, London, 1956.
 Sutherland, W. (1893), "The viscosity of gases and molecular force", Philosophical Magazine, S. 5, 36, pp. 507-531 (1893).
 Comsol Multiphysics Reference Manual, 2018.