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1. |
Modelling of fluid expulsion and deformation behaviour of dewatering sediments |
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International Journal for Numerical and Analytical Methods in Geomechanics,
Volume 17,
Issue 8,
1993,
Page 531-551
F. Tom Chang,
Gerard P. Lennon,
S. Pamukcu,
B. Carson,
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摘要:
AbstractA finite element model is developed for modelling coupled fluid expulsion/deformation behaviour of dewatering sediments subjected to external loadings under isothermal conditions. The non‐linear deformation behaviour of the sediment (soil) skeleton is based on the force equilibrium equation in which the constitutive relationship of stress and strain is implemented by the modified Cam‐Clay model in soil plasticity. The fluid flow behaviour in the model is described by the generalized porous media flow equation. The model allows temporal and spatial variations of porosity and permeability. The fluid viscosity and density are assumed to be temperature‐dependent. The model also allows the development of single and multiple faults, depending upon the material (sediment and fluid) properties, loading and boundary conditions.Procedures are implemented for (1) updating the material properties such as porosity, permeability, fluid density and viscosity and (2) the development of faults which allow the formation of high‐permeability conduits for fluid flow. The solution algorithm for displacements of the sediments and the excess pore (fluid) pressure is based on a residual load technique to handle the non‐linear (elastic‐plastic) deformation behaviour of the sediment skeleton. The model can be applied to one‐ and two‐dimensional problems. Examples of a plane strain saturated sediment layer subjected to stepwise horizontal tractions versus
ISSN:0363-9061
DOI:10.1002/nag.1610170802
出版商:John Wiley&Sons, Ltd
年代:1993
数据来源: WILEY
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2. |
Short‐crested wave‐induced soil response in a porous seabed of infinite thickness |
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International Journal for Numerical and Analytical Methods in Geomechanics,
Volume 17,
Issue 8,
1993,
Page 553-576
J. R. C. Hsu,
D. S. Jeng,
C. P. Tsai,
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摘要:
AbstractWaves reflecting obliquely from structures establish short‐crested waves which are conducive to scour of the bed adjacent to them. The pore pressures and effective stresses induced by this wave system are derived analytically for an unsaturated, anisotropic soil matrix of infinite depth in a three‐dimensional domain. Verification is available by the solutions being readily reduced to the two‐dimensional cases of the progressive and standing wave, for which some closed‐form solutions are available. It is shown that wave obliquity is coupled with soil permeability. The effects of wave obliquity, relative water depth, soil stiffness and soil permeability on wave‐induced pore pressure are discussed
ISSN:0363-9061
DOI:10.1002/nag.1610170803
出版商:John Wiley&Sons, Ltd
年代:1993
数据来源: WILEY
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3. |
Finite element modelling of three‐phase flow in deforming saturated oil reservoirs |
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International Journal for Numerical and Analytical Methods in Geomechanics,
Volume 17,
Issue 8,
1993,
Page 577-598
R. W. Lewis,
Y. Sukirman,
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摘要:
AbstractA numerical simulation is presented for three‐dimensional three‐phase fluid flow in a deforming saturated oil reservoir. The mathematical formulation describes a fully coupled governing equation systen which consists of the equilibrium and continuity equations for three immiscible fluids flowing in a porous medium. An elastoplastic soil model, based on a Mohr–Coulomb yield surface, is used. The finite element method is applied to obtain simultaneous solutions to the governing equations where displacement and fluid pressures are the primary unknowns. The final discretized equations are solved by a direct solver using fully implicit procedures. The developed model is used to investigate the problems of three‐phase fluid flow in a deforming saturated oil re
ISSN:0363-9061
DOI:10.1002/nag.1610170804
出版商:John Wiley&Sons, Ltd
年代:1993
数据来源: WILEY
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4. |
Infinite elements (Peter Bettess, Penshaw Press, Sunderland, U.K., 1992, ISBN 0‐9518806‐0‐8. 264 pp.) |
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International Journal for Numerical and Analytical Methods in Geomechanics,
Volume 17,
Issue 8,
1993,
Page 599-599
Y. K. Chow,
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ISSN:0363-9061
DOI:10.1002/nag.1610170805
出版商:John Wiley&Sons, Ltd
年代:1993
数据来源: WILEY
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5. |
Introduction to finite and boundary element methods for engineers (G. Beer and J. O. Watson, Wiley, New York, 1992. ISBN 0471 928135 522 pp.) |
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International Journal for Numerical and Analytical Methods in Geomechanics,
Volume 17,
Issue 8,
1993,
Page 600-600
Tribikram Kundu,
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ISSN:0363-9061
DOI:10.1002/nag.1610170806
出版商:John Wiley&Sons, Ltd
年代:1993
数据来源: WILEY
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6. |
Conference diary |
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International Journal for Numerical and Analytical Methods in Geomechanics,
Volume 17,
Issue 8,
1993,
Page 601-602
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PDF (99KB)
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ISSN:0363-9061
DOI:10.1002/nag.1610170807
出版商:John Wiley&Sons, Ltd
年代:1993
数据来源: WILEY
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7. |
Masthead |
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International Journal for Numerical and Analytical Methods in Geomechanics,
Volume 17,
Issue 8,
1993,
Page -
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PDF (116KB)
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ISSN:0363-9061
DOI:10.1002/nag.1610170801
出版商:John Wiley&Sons, Ltd
年代:1993
数据来源: WILEY
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