CONCLUSIONS and FURTHER DEVELOPMENT
A new Eulerian-Eulerian three-phase solver was proposed for the preliminary analysis of the
separation process inside an Oil&Gas separator. The mathematical formulation
of the governing
equations and the closure relations were specifically chosen to numerically capture phase
separations and phase inversion phenomena. The numerical algorithm was specifically designed to
ensure the boundness of the solutions and to enhance the implicit treatment of source terms.
The solver shows good agreement with the analytical multiphase benchmarks. Moreover, it provides
consistent results in terms of separation effectiveness in the simplified geometry of industrial oil and
gas separators.
As further developments, we are currently working on three aspects:
1. Perform additional simulations a real-case geometry using different inlet nozzle shapes;
2. Compare the CFD results with the industrial validation
procedure;
3. Study the reduction of the computational cost of the code introducing a simplifying solver for
describing the separation process.
REFERENCES
1. Bahadori, Alireza.
Natural gas processing: technology and engineering design.
Gulf
Professional Publishing, 2014;
2.
Behzadi, A., R.I. Issa, and H.Rusche. “Modelling of dispersed bubble and droplet flow at high
phase fractions.” Chemical Engineering Science 59.4 (2004): 759-770;
3.
Garnier, C., M. Lance, and J.L. Marié. “Measurement of local
flow characteristics in
buoyancy-
driven bubbly flow at high void fraction.” Experimental Thermal and Fluid Science
26.6 (2002): 811-815.
4.
Laure A. de Tournemine, V. Roig, C. Suzanne. “Experimental study of the turbulent in bubbly
flows at high void fraction”. Institut de Mecanique des fluids de Toulouse.
5. Weller H.,
Derivation, modelling and solution of the conditionally averaged two-phase flow
equations
. Tech. rep., OpenCFD Ltd, United Kingdom, 2002;
6. Computational Fluid Dynamics of Dispersed Two-Phase at High Phase Fractions, H. Rusche,
PhD Thesis, Imperial College, London (2003);
7. Passalacqua A. and Fox R. Implementation of an iterative solution procedure for multi-fluid
gas-particle flow models on unstructured grids. Powder Technology, 213:174-187, 2011;
8. Ramson V. and Mousseau V. Convergence and accuracy of the RELAP5 two-phase flow
model.
Proceedings of the ANS International Topical Meeting on Advences in Mathematics,
Computations, and Reactor Physics, 1, 1991
;
9. Stadke, Herbert.
Gasdynamic aspects of two-phase flow: Hyperbolicity, wave propagation
phenomena and related numerical methods
. John Wiley & Sons. 2006;
10.
Manning, Francis S., and Richard E. Thompson. Oilfield processing of petroleum: Crude oil.
Vol 2. Pennwell books, 1995.
View
publication stats
View publication stats