POD Modeling for Gas Flow in Dual-Porosity Dual-Permeability Porous Media

Yi Wang, Wen Di Xue, Bo Yu, Shu Yu Sun

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Proper orthogonal decomposition (POD) method is introduced into numerical computations of shale gas flows in dual-porosity dual-permeability porous media. A POD projection model has been established. Although POD projection of the equations for matrix and fracture separately is correct in math while the mass conservation of matrix or fracture can be satisfied, artificial projection term caused by the mass transfer from matrix to fracture appears so that the mass conservation for the whole system cannot be guaranteed. Thus, the precision and robustness of the POD model are weak. To solve this problem, we propose a new projection manner that can guarantee the whole mass conservation of the matrix-fracture system. Numerical results show that the POD model can ensure high precision (mean relative deviation as low as 0. 8%) and fast computation (computational speed promoted 720 times) with strong robustness, after using the new projection manner.

Original languageEnglish (US)
Pages (from-to)1063-1069
Number of pages7
JournalKung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics
Issue number5
StatePublished - May 1 2018

Bibliographical note

Publisher Copyright:
© 2018, Science Press. All right reserved.


  • Dual-porosity dual-permeability
  • Gas flow
  • Mass conservation
  • Porous media
  • Proper orthogonal decomposition

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanical Engineering


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