XiangYan Kong

Publications (3)2.65 Total impact

• Source

  Available from: 219.238.6.203

  Article: A reconstruction method of porous media integrating soft data with hard data

  DeTang Lu, Ting Zhang, JiaQing Yang, DaoLun Li, XiangYan Kong
  [show abstract] [hide abstract]
  ABSTRACT: The three-dimensional reconstruction of porous media is of great significance to the research of mechanisms of fluid flow. The real three-dimensional structural data of porous media are helpful to describe the irregular topologic structures in porous media. The reconstruction of porous media will be inaccurate while only hard data or no conditional data are available. Reconstructed results can be more accurate, using soft data during reconstruction. Integrating soft data with hard data, a method based on multiple-point geostatistics (MPS) is proposed to reconstruct three-dimensional structures of porous media. The variogram curves and permeability, computed by lattice Boltzmann method (LBM), of the reconstructed images and the target image obtained from real volume data were compared, showing that the structural characteristics of reconstructed porous media using both soft data and hard data as conditional data are most similar to those of real volume data.
  Chinese Science Bulletin 04/2012; 54(11):1876-1885. · 1.32 Impact Factor
• Article: Transient pressure analysis in porous and fractured fractal reservoirs

  XiangYan Kong, DaoLun Li, DeTang Lu
  [show abstract] [hide abstract]
  ABSTRACT: Fluid flow in porous and fractured fractal reservoirs is studied in the paper. The basic formulae of seepage velocity, permeability and porosity in both porous and fractured fractal media are developed. The pressure diffusion equation of slightly compressible fluid in fractal reservoirs is derived. The analytical solutions of the transient pressure are given for the line-source well and the well with well-bore storage and skin factor. The typical curves of pressure and the derivative of pressure are established, along with the interpretation of the well-testing method via type-curve matching. In addition, 3-D pressure diffusion equations for anisotropic fractal media are given in both Cartesian coordinates and Cylindrical coordinates.
  Science in China Series E Technological Sciences 04/2012; 52(9):2700-2708. · 1.02 Impact Factor
• Article: Stability of natural convection of power-law fluid and non-Darcy flow in porous media

  Xiangyan Kong, Guoquan Chen, Jianbing Wu, Peichao Li, Detang Lu, Xianzhi Xu
  [show abstract] [hide abstract]
  ABSTRACT: In the present work the effect of the power law exponent of power-law fluid and non-Darcy number of non-Darcy flow on stability of natural convection in porous media are studied. The computation analysis of effect of power-law exponent of power-law fluid and non-Darcy number of non-Darcy flow in the rectangular duct on the transition Rayleigh number Ra*, which means the convective model transiting from stationary state to periodic solution. The duct has filled a porous medium saturated with the power-law non-Newtonian fluid or Newtonian fluid for non-Darcy flow, in which there is uniform internal heat generation per unit volume q. In this paper the relationship between the transition Rayleigh number Ra* and the power-law exponent n, Ra* and non-Darcy number Be, are shown. To these two aspects, the transition route from steady to chaotic convection is also obtained.
  Journal of Thermal Science 02/2001; 10(1):74-78. · 0.31 Impact Factor