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Presents a fully coupled numerical model to simulate the slow transient phenomena involving heat and mass transfer in deforming partially saturated porous materials. Makes use of the modified effective stress concept together with the capillary pressure relationship. Examines phase changes (evaporation‐condensation(, heat transfer through conduction and convection, as well as latent heat transfer. The governing equations in terms of gas pressure, capillary pressure, temperature and displacements are coupled non‐linear differential equations and are discretized by the finite element method in space and by finite differences in the time domain. The model is further validated with respect to a documented experiment on partially saturated soil behaviour, and the effects of two‐phase flow, as compared to the one‐phase flow solution, are analysed. Two other examples involving drying of a concrete wall and thermoelastic consolidation of partially saturated clay demonstrate the importance of proper physical modelling and of appropriate choice of the boundary conditions.

Develop a local radial point interpolation method (LRPIM) to analyze the dissipation process of excess pore water pressure in porous media and verify its numerical capability.

Terzaghi's consolidation theory is used to describe the dissipation process. A local residual form is formulated over only a sub‐domain. This form is spatially discretized by radial point interpolation method (RPIM) with basis of multiquadrics (MQ) and thin‐plate spline (TPS), and temporally discretized by finite difference method. One‐dimensional (1D) and two‐dimensional consolidation problems are numerically analyzed.

The LRPIM is suitable, efficient and accurate to simulate this dissipation process. The shape parameters, q=1.03, R=0.1 for MQ and η=4.001 for TPS, are still valid.

The asymmetric system matrix in LRPIM spends more resources in storage and CPU time.

Local residual form requires no background mesh, thus being a truly meshless method. This provides a fast and practical algorithm for engineering computation.

This paper provides a simple, accurate and fast numerical algorithm for the dissipation process of excess pore water pressure, largely simplifies data preparation, shows that the shape parameters from solid mechanics are also suitable for the dissipation process.

This paper presents the physical, mathematical and numerical models forming the main structure of the numerical analysis of the thermal, hydral and mechanical behaviour of normal, high‐performance concrete (HPC) and ultra‐high performance concrete (UHPC) structures subjected to heating. A fully coupled non‐linear formulation is designed to predict the behaviour, and potential for spalling, of heated concrete structures for fire and nuclear reactor applications. The physical model is described in more detail, with emphasis being placed upon the real processes occurring in concrete during heating based on tests carried out in several major laboratories around Europe as part of the wider high temperature concrete (HITECO) research programme. A number of experimental and modelling advances are presented in this paper. The stress‐strain behaviour of concrete in direct tension, determined experimentally, is input into the model. The hitherto unknown micro‐structural, hydral and mechanical behaviour of HPC/UHPC were determined experimentally and the information is also built into the model. Two examples of computer simulations concerning experimental validation of the model, i.e. temperature and gas pressure development in a radiatively heated HPC wall and hydro‐thermal and mechanical (damage) performance of a square HPC column during fire, are presented and discussed in the context of full scale fire tests done within the HITECO research programme.

The purpose of this paper is to compute the pressure drop through sudden expansions and contractions for two‐phase flow of oil/water emulsions.

Two‐phase computational fluid dynamics (CFD) calculations, using Eulerian–Eulerian model, are employed to calculate the velocity profiles and pressure drops across sudden expansions and contractions. The pressure losses are determined by extrapolating the computed pressure profiles upstream and downstream of the expansion/contraction. The oil concentration is varied over a wide range of 0‐97.3 percent by volume. The flow field is assumed to be axisymmetric and solved in two dimensions. The two‐dimensional equations of mass, momentum, volume fraction and turbulent quantities along with the boundary conditions have been integrated over a control volume and the subsequent equations have been discretized over the control volume using a finite volume technique to yield algebraic equations which are solved in an iterative manner for each time step. The realizable per phase k‐ ε turbulent model is considered to update the fluid viscosity with iterations and capture the individual turbulence in both the phases.

The contraction and expansion loss coefficients are obtained from the pressure loss and velocity data for different concentrations of oil–water emulsions. The loss coefficients for the emulsions are found to be independent of the concentration and type of emulsions. The numerical results are validated against experimental data from the literature and are found to be in good agreement.

The present computation could not use the surface tension forces and the energy equation due to huge computing time requirement.

The present computation could compute realistically the two‐phase pressure drop through sudden expansions and contractions by using a two‐phase Eulerian model and hence this model can be effectively used for industrial applications where two‐phase flow comes into picture.

The original contribution of the paper is in the use of the state‐of‐the‐art Eulerian two‐phase flow model to predict the velocity profile and pressure drop through industrial piping systems.

The purpose of this publication is to determine the influence of selected factors on the durability and the tightness of ferrofluid seals working in water environments. Ferromagnetic fluid (FF) seals are one of the most common applications of magnetic fluid. New applications can be developed by extending the capabilities of these seals in fluid environments, especially in water.

Tests were performed using ferrofluids with differing physical properties like density, dynamic viscosity and saturation magnetization. Working conditions, such as water pressure and peripheral speed, were taken into account.

A mathematical description which allows the selection of an appropriate ferrofluid and the determination of the operating parameters of an FF seal was developed.

This study concerns the influence of peripheral speed, water pressure and magnetic fluid properties on seal tightness.

The cracking of a reinforced concrete lining has a significant influence on the safety and leakage of pressure tunnels. This study aims to develop, validate and apply a numerical algorithm to simulate the lining cracking process during the water-filling period of pressure tunnels.

Cracks are preset in all lining elements, and the Mohr−Coulomb criterion with a tension cutoff is used in determining whether a preset crack becomes a real crack. The effects of several important factors such as the water pressure on crack surfaces (WPCS) and the heterogeneity of the lining tensile strength are also considered simultaneously.

The crack number and width increase gradually with the increase in internal water pressure. However, when the pressure reaches a threshold value, the increase in crack width becomes ambiguous. After the lining cracks, the lining displacement distribution is discontinuous and steel bar stress is not uniform. The measured stress of the steel bar is greatly determined by the position of the stress gauge. The WPCS has a significant influence on the lining cracking mechanism and should not be neglected.

A reliable algorithm for simulating the lining cracking process is presented by which the crack number and width can be determined directly. The numerical results provide an insight into the development law of lining cracks and show that the WPCS significantly affects the cracking mechanism.

A fully coupled numerical model to simulate the complex behaviour of soil deformation, water flow, airflow, and heat flow in porous media is developed. The following thermal effects are taken into account: heat transfer through conduction and convection, flow, as well as viscosity and density variation of the fluids due to temperature gradients. The governing equations in terms of soil displacements, water and air pressures, and temperature are coupled non‐linear partial differential equations and are solved by the finite element method. Two examples are presented to demonstrate the model performances.

This paper aims to provide a view on the implications of large‐scale increases in demand for biomass production on water storage behaviours. In climates of high variability in rainfall, the pressures on farmers to build up on‐farm surface water supplies to the detriment of communities and businesses downstream is already present. Therefore, the added water storage pressures that arise from future demands for biomass need to be investigated.

This viewpoint presents a review of the issues surrounding the forecast for demand for agriculturally produced biomass and the increased demands on surface water storage created. The paper then presents the problem of unfair and unsafe water storage in agriculture through a review of the surrounding literature and policy in place in Australia.

The paper finds that if predicted skyrocketing future demand for biomass production for energy eventuates, then surface water on‐farm storages would be placed at increased risk as farmers experience pressure to store more water than they are entitled to. Increased demands from biomass production could mean that surrounding communities suffer increased threat from unfair water sharing in times of drought, and unsafe water storage in times of flood.

Policy should be developed rapidly to address the current unsustainable water storage management practices of farmers and sustainable biomass production. Water management behaviour certification should be introduced immediately to counter the risk of over storage in light of the demands of the future.

The paper provides an overview of the issues surrounding unfair and unsafe on farm water storage in dams in climate extremes placed in the context of a new and emerging demand on farmers to produce in an unsustainable manner.

Inhibition of corrosion is a specialised division of the science of water treatment. The necessity for treatment of industrial waters for the prevention of scale deposits and to adjust the dissolved constituents to suit a particular manufacturing process is clearly recognised, but the conditioning of the pretreated water to prevent corrosion is often not considered at all or at least given only superficial attention. It is usually not until the incidence of corrosion poses maintenance problems and affects the manufacturing process that the corrosion aspect of water treatment is looked at seriously.

The purpose of this paper is to explore how a heterogeneous range of water efficiency responses were driven across a field of seven water consuming organisations in Australia at a time of acute drought conditions into the late 2000s.

Semi-structured interviews were conducted with a range of individuals from 2008 to 2010.

A loosely coordinated range of drivers motivated pervasive water efficiency responses in two of the seven case organisations. Would-be leaders sought to invoke a water efficiency field, and champion nascent logics and theorisation in order to gain some competitive advantage. There was little sense among others of any normative, mimetic or coercive pressure to adopt homogeneous practices. While the field lacked effective champions for change, an institutionalisation of novel water efficiency practices continued across the field into 2010.

Further research could investigate how water efficiency responses continued to develop or decline into the 2010s, and how such practices integrate with the management of other sustainability issues (including carbon).

Global water resources are subject to increasing supply constraints. This paper responds by exploring how the institutionalisation of water efficiency change can be driven across a field of organisations.

Relatively little is understood about “institutionalization” as an unfinished process. This paper responds by contributing an understanding of how institutional logics developed, and how theorisation for water efficiency progressed in the context of water scarcity in Australia in the late 2000s.