A Formulation of Fully Coupled Thermal-Hydraulic-Mechanical Behaviour of Saturated Porous Media—numerical Approach

Gatmiri, Behrouz; Delage, Pierre

doi:10.1002/(sici)1096-9853(199703)21:3<199::aid-nag865>3.0.co;2-m

Cited by 82 publications

(38 citation statements)

References 30 publications

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“…However, some authors report the effects of temperatures on the two-phase porous flow behavior. 5,[27][28][29][30][31][32][33][34][35][36][37][38][39][40] Sinnokrot et al 27 determined the effects of temperature on capillary pressure curves through measurement of drainage and imbibition capillary pressures for three consolidated sandstones and one limestone core. Lo and Mungan 41 proposed that oil recovery operations are more efficient at higher temperature.…”

Section: Introductionmentioning

confidence: 99%

Dynamic effects on capillary pressure–Saturation relationships for two‐phase porous flow: Implications of temperature

Hanspal

Das

2011

AIChE Journal

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in Wiley Online Library (wileyonlinelibrary.com).Work carried out in the last decade or so suggests that the simulators for multiphase flow in porous media should include an additional term, namely a dynamic coefficient, as a measure of the dynamic effect associated with capillary pressure. In this work, we examine the dependence of the dynamic coefficient on temperature by carrying out quasi-static and dynamic flow simulations for an immiscible perchloroethylene-water system. Simulations have been carried out using a two-phase porous media flow simulator for a range of temperatures between 20 and 80 C. Simulation domains represent 3-D cylindrical setups used by the authors for laboratory-scale investigations of dynamic effects in two-phase flow. Results are presented for two different porous domains, namely the coarse and fine sands, which are then interpreted by examining the correlations between dynamic coefficient(s) and temperature, time period(s) required for attaining irreducible water saturation, and the dynamic aqueous/nonaqueous phase saturation and capillary pressure plots. The simulations presented here maintain continuity from our previous work and address the uncertainties associated with the dependency of dynamic coefficient(s) on temperature, thereby complementing the existing database for the characterization of dynamic coefficients and subsequently enabling the users to carry out computationally economical and reliable modeling studies.

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Section: Introductionmentioning

confidence: 99%

Dynamic effects on capillary pressure–Saturation relationships for two‐phase porous flow: Implications of temperature

Hanspal

Das

2011

AIChE Journal

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“…The proposed model has been implemented in Θ-STOCK Code which is developed by Gatmiri and his coworkers [18][19][20]. Nonlinear elastic, elastoplastic and elasto-damage constitutive laws as well as soilatmosphere interaction model have already been incorporated in the code [21][22][23][24][25].…”

Section: Formulation Of Plastic Behaviourmentioning

confidence: 99%

Plasto-damage modelling for semi-brittle geomaterials

Alizadeh

Gatmiri

2016

E3S Web Conf.

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Abstract. This paper presents an elastoplastic damage model for constitutive modelling of semi-brittle geomaterials showing two irreversible mechanisms. On one hand, the model deals with the plastic behaviour of a porous medium by a new variant of Barcelona Basic Model. On the other hand, the model combines the micromechanical definition of damage and phenomenological concepts in the framework of Continuum Damage Mechanics (CDM) for damage modelling. A second order tensorial damage variable is adopted for the model. Damaged effective stress variables are employed for formulation of elastoplastic behaviour laws and the plastic yield surface is a damage dependent one. The model has been validated by comparing the numerical results with experimental results of argillites.

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“…To describe the behavior of unsaturated porous media Gatmiri's equations [1][2][3] are used. The differential forms of these equations are written based on the two independent variables of net stress and suction.…”

Section: Introductionmentioning

confidence: 99%

Propagation of cohesive crack in unsaturated porous media by use of XFEM method

2016

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Abstract. Various damage models have been presented to model the cracks. These models don't simulate the discontinuity in displacement field; just see its effect on an upper level on stress field through damage parameter. Damage parameter is used to modify other fields like pressure. This paper tries to model crack itself through fracture mechanics. The opening of the crack is modeled and is connected to stress field by use of cohesive crack model that relates plasticity of crack tip to its opening. When crack opens, there exists discharge of water and gas through crack that are calculated by use of multiscale methods and incorporated in weak form of governing equations.Due to complexity of proposed model, it can't be solved analytically and extended finite element method (XFEM) is used to solve it. Xfem method which is based on partition of unity property of FEM adds some terms to conventional interpolation functions to model discontinuity of fields adjacent to the crack. This method simulates crack in ordinary mesh of FEM and doesn't need remeshing around the crack when it propagates.

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A Formulation of Fully Coupled Thermal-Hydraulic-Mechanical Behaviour of Saturated Porous Media—numerical Approach

Cited by 82 publications

References 30 publications

Dynamic effects on capillary pressure–Saturation relationships for two‐phase porous flow: Implications of temperature

Dynamic effects on capillary pressure–Saturation relationships for two‐phase porous flow: Implications of temperature

Plasto-damage modelling for semi-brittle geomaterials

Propagation of cohesive crack in unsaturated porous media by use of XFEM method

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