Lattice Boltzmann Simulation of Natural Convection in a Fractured Petroleum Reservoir Domain: Single-Phase and Multi-Phases Investigations
Hossein Kaydani1, Ali Mohebbi1, *, Amir Ahmad Forghani2
Identifiers and Pagination:Year: 2018
First Page: 48
Last Page: 66
Publisher Id: TOPEJ-11-48
Article History:Received Date: 23/2/2018
Revision Received Date: 4/04/2018
Acceptance Date: 12/04/2018
Electronic publication date: 30/4/2018
Collection year: 2018
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Natural convection is one of the main effective production mechanisms in a fractured petroleum reservoir.
This paper investigated the simulation of natural convection heat transfer in a fracture domain of petroleum reservoir.
This is done by using Lattice-Boltzmann Equation (LBE) method. In this study, a D2Q9 lattice model was coupled with the passive-scalar lattice thermal model to represent density, velocity and internal energy distribution function, respectively.
Results and Conclusion:
The results were in excellent agreement with CFD results from the literature. The effects of Rayleigh number and Aspect-Ratio (AR) on flow pattern and temperature distribution were studied. The results indicated that natural convection rate increased with the Rayleigh number increment. The local Nusselt number (Nu) was evaluated on the hot wall and it was rising with increasing the Rayleigh number. Streamlines and temperature field were affected significantly by changing the aspect-ratio. Moreover, first of all, natural convection in Single Component Mutli-Phase (SCMP) was discussed and here and then after validation of SCMP model, the results indicated that the streamline and isotherm were affected by second phases because of the formation of two-phase flow in some of the reservoirs or production period.