Numerical simulation for separation of multi-phase immiscible fluids in porous media

Bai Zhi Wu, You Sheng Xu, Yang Liu, Guo Xiang Huang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

10 Citations (Scopus)


Based on a lattice Boltzmann method and general principles of porous flow, a numerical technique is presented for analysing the separation of multi-phase immiscible fluids in porous media. The total body force acting on fluid particles is modified by adding relative permeability in Nithiarasu's expression with an additional surface tension term. As a test of this model, we simulate the phase separation for the case of two immiscible fluids. The numerical results show that the two coupling relative permeability coefficients K12 and K21 have the same magnitude, so the linear flux-forcing relationships satisfy Onsager reciprocity. Phase separation phenomenon is shown with the time evolution of density distribution and bears a strong similarity to the results obtained from other numerical models and the flows in sands. At the same time, the dynamical rules in this model are local, therefore it can be run on massively parallel computers with well computational efficiency. Phys. Soc. and IOP Publishing Ltd.
Original languageEnglish
Pages (from-to)2046-2051
Number of pages6
JournalChinese Physics
Issue number10
Publication statusPublished - 1 Oct 2005


  • Numerical simulation
  • Porous media
  • Separation of multi-phase immiscible fluids

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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