Severe limitations of the use of three-dimensional computational fluid dynamics codes (CFD) arise when trying to simulate multiphase flow in long pipes due to time constraints. 1D codes for two-phase flow, based on two-fluid models, are fast but are known to be accurate only when the velocities are within the Kelvin-Helmholtz inviscid limit [1]. An alternative is to carry out a two-dimensional CFD simulation of a channel based on the Volume of Fluid (VOF) model. 2D CFD has a wider applicability range compared to 1D, it does not have the issue of ill-posedness and it also has better turbulence models built in. Again compared to 1D the 2D VOF model has a better interface description and wall treatment. In this paper a novel method is introduced that allows swift simulations of pipeline two-phase flow in the stratified and slug flow regime, by approximating the pipe as a channel and with a methodology that solves the problem of the interfacial velocity differences, inherent in the volume of fluid model. An initial validation using the wave growth problem has already been carried out [2]. Here a set consisting of 92 experimental cases in the slug flow regime has been simulated with 2D CFD, and the simulation results showed a good agreement with experimental results. Discussions in the paper include also the question of the range of applicability for 2D CFD, and the advantages and disadvantages compared to 3D CFD and also to 1D code based on the two-fluid model. Shear stresses are then extracted from the 2D CFD simulations and used to recalibrate the friction factors [3] used in the 1D code.
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ASME 2012 International Mechanical Engineering Congress and Exposition
November 9–15, 2012
Houston, Texas, USA
Conference Sponsors:
- ASME
ISBN:
978-0-7918-4523-3
PROCEEDINGS PAPER
Validation of 2D CFD for Two-Phase Transient Flow in a Channel and Comparison With 1D Model
Stamatis Kalogerakos,
Stamatis Kalogerakos
Cranfield University, Cranfield, UK
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Mustapha Gourma,
Mustapha Gourma
Cranfield University, Cranfield, UK
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Chris Thompson
Chris Thompson
Cranfield University, Cranfield, UK
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Stamatis Kalogerakos
Cranfield University, Cranfield, UK
Mustapha Gourma
Cranfield University, Cranfield, UK
Chris Thompson
Cranfield University, Cranfield, UK
Paper No:
IMECE2012-87506, pp. 2485-2494; 10 pages
Published Online:
October 8, 2013
Citation
Kalogerakos, S, Gourma, M, & Thompson, C. "Validation of 2D CFD for Two-Phase Transient Flow in a Channel and Comparison With 1D Model." Proceedings of the ASME 2012 International Mechanical Engineering Congress and Exposition. Volume 7: Fluids and Heat Transfer, Parts A, B, C, and D. Houston, Texas, USA. November 9–15, 2012. pp. 2485-2494. ASME. https://doi.org/10.1115/IMECE2012-87506
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