Maziar Gholami Korzani

• PhD in Civil/Geotechnical Engineering
• Senior Research Fellow at Queensland University of Technology

This study introduces the development of the Dynamic Cellular Automata Fast Flood Evaluation (Dynamic CA-ffé), a novel fast flood evaluation model grounded in the Cellular Automata approach. A unique feature of the Dynamic CA-ffé is its hybrid 1D/2D structure that integrates the StormWater Management Model (SWMM) developed by the USEPA. This integr...

Accurate quantification of spatially resolved fluid flow within fractures is crucial for successful reservoir development, such as Enhanced Geothermal Systems. This study presents an innovative workflow designed to model and characterize preferential flow paths (channels) within rough‐walled shear fractures. A set of 30 rough‐walled self‐affine fra...

Evaluation of underground processes requires numerical modeling based on sophisticated and reliable meshing. Our new GeoMeshPy library focuses on the discretization of probabilistic geological structures. This study presents a synthetic show-case for the capacity of this library to quantify the impact of structural uncertainty. In here, 50 models w...

Aquifer thermal energy storage (ATES) offers the possibility to store excess heat available in summer, so that it can be used in winter, when the heat demand is higher. In contrast to near-surface aquifer storage, high-temperature ATES allows the exploitation of deeper reservoirs with higher storage temperatures, enabling to meet the demand of indu...

In contrast to typical forms of renewable energy like wind power and solar energy, baseload power is available everywhere throughout the whole year. However, its contribution to green energy generation is lower than its potential level. The primary factors restricting the spread of geothermal systems are subsurface water contamination, seismic even...

Circulation of working fluid in closed geothermal loops is an alternative environmentally friendly approach to harvest subsurface energy compared to open hole geothermal doublet systems. However, the rapid decline of production temperature, low generated thermal power, and difficulties in deepening the system are major limitations. Herein, syntheti...

Operating with typical geothermal systems may create seismic events, contaminate subsurface water, and cause other environmental hazards. However, multilateral closed deep geothermal (MCDG) systems can extract a considerable amount of energy in an environmentally friendly manner. Nevertheless, generated power, predictability, longevity, and payback...

Regarding disadvantages of fossil fuels, renewables like geothermals can be an eco-friendly source of energy. In Iran, the availability of fossil fuels and poor policies surrounding subsidies (ranked as the first in giving subsidies) caused high energy consumption (1.75 times higher than the global average). Energy is mainly provided by fossil fuel...

Mahallat Geothermal Region, located in the central part of Iran, is known as one of the largest low-temperature geothermal fields. In this study, Mahallat geothermal resource has been evaluated based on integrated geological, geochemical and geophysical analyses. Gravity data revealed three major negative anomaly zones. Based on the geochemical ana...

Plain Language Summary The movement of fluid and heat through fractured rocks is massively affected by the void space of the contributing fractures and the velocity of the fluid. The opposing offset of the two fracture surfaces creates complex and variable void geometries. A calculation of the expected flow rates is very difficult. In most studies,...

Injection of Newtonian fluids to displace pseudoplastic and dilatant fluids, governed by the power-law viscosity relationship, is common in many industrial processes. In these applications, changing the viscosity of the displaced fluid through velocity alteration can regulate interfacial instabilities, displacement efficiency, the thickness of the...

Deep closed-loop U-shaped heat exchanger with a long horizontal extension (up to 5 km) is a new approach to harvest heat more sustainably. This system comprises two deep vertical boreholes which are connected using a long horizontal section. Such a closed-loop system avoids subsurface water contamination, greenhouse gas emission, seismic events, an...

In this study, two-component displacement of a time-dependent non-Newtonian fluid by a Newtonian fluid in a two-dimensional inclined channel is simulated. Using a special multi-component model of the lattice Boltzmann method that is called He-Chen-Zhang, made it possible to do the simulations for non-uniform density and very high viscosity ratios....

HT-ATES (high-temperature aquifer thermal energy storage) systems are a future option to shift large amounts of high-temperature excess heat from summer to winter using the deep underground. Among others, water-bearing reservoirs in former hydrocarbon formations show favorable storage conditions for HT-ATES locations. This study characterizes these...

The detailed knowledge of the hydraulic properties is crucial for the assessment of geothermal reservoirs. In the case of Enhanced Geothermal Systems (EGS), fluid flow occurs along complex networks of faults and fractures that connect two or more boreholes. The geometric appearance and properties of these fractures are highly variable. They can be...

Temperature logs have important applications in the geothermal industry such as the estimation of the static formation temperature (SFT) and the characterization of fluid loss from a borehole. However, the temperature distribution of the wellbore relies on various factors such as wellbore flow conditions, fluid losses, well layout, heat transfer me...

In this work, the propagation of a thermal-hydraulic front caused by cold fluid injection is investigated, using a finite element (FE) model. The objective is to simulate the propagation of temperature changes in the subsurface and to quantify the resulting thermally induced stresses. The model is based on the setup of a geothermal powerplant in th...

Boreholes under dynamic conditions are a highly non-linear and complexly coupled thermo-hydraulic system. Multiple parameters, for instance, temperature, pressure, specific heat, enthalpy, viscosity, flow regime, heat transfer, degassing, steam quality and salinity are inter connected. Production and injection often entail several engineering chall...

A simulation framework based on Smoothed Particle Hydrodynamics (SPH) is introduced to model problems involving the interaction between flowing water and soil deformation. Changes in soil porosity and associated permeability are automatically adjusted within this framework. The framework’s capabilities are presented and discussed for three geotechn...

Extreme weather events, such as floods, are becoming more frequent in future with all consequences concerning the safety especially of water retaining structures, in particular, levees used as technical flood protection. The knowledge and correct consideration of coupled hydro-mechanical processes influencing the failure and post-failure behaviour...

The existence of the water and water flow within soil pores can potentially introduce local instabilities in earthen structures followed by a structural failure and subsequent large deformations. Against the background of the more frequently occurring extreme weather conditions (e.g. floods) caused by climate change, geotechnical structures can be...

Simulations of two-dimensional (2D) flow past a circular cylinder in the Smoothed Particle Hydrodynamics (SPH) are presented in this paper. This study focused on the accurate determination of the drag coefficient using SPH-based simulation. The fluid was modeled as a viscous liquid with weak compressibility. Boundary conditions, such as a no-slip s...

A novel approach is presented to consider the porosity and permeability as a variable parameter during failure within moderate to high permeable soils, and Smoothed Particle Hydrodynamics (SPH) method is used as the solver. Several comparisons between numerical simulations and conducted experimental results were discussed for three studied problems...

Internal erosion is the interaction of micro-scale hydraulic and mechanic processes taking place within the soil structure leading to macro-scale damages causing failures of whole constructions. While the geometrical and hydraulic conditions on the macro-scale supporting erosion are well investigated, the processes involved in the onset and continu...

The study concerns the application of the Smoothed Particle Hydrodynamics (SPH) method within the computational fluid dynamics (CFD). In the present study, some classical problems – the Poiseuille flow, the Hagen-Poiseuille flow, and the Couette flow – with the analytical solutions were investigated to verify a newly developed code of SPH. The code...

Extreme weather events, such as floods, are more frequent nowadays and become great risks for our structures, in particular, embankments in geotechnical engineering. Hence, the structural and post-failure behaviours of geomechanical structures are of paramount significant. This study focuses on impacts of soil-water interacting forces, as a consequ...

The flow of a viscous fluid past a stationary isolated sphere may be considered a simplified case of a general family of immersed bluff-body flows with widespread applications. The study concerns the application of the smoothed particle hydrodynamics (SPH) method within computational fluid dynamics. A code is developed using C++ to solve all equati...

As jack-up platforms have recently been used in deeper and harsher waters, there has been an increasing demand to understand their behaviour more accurately to develop more sophisticated analysis techniques. One of the areas of significant development has been the modelling of spudcan performance, where the load-displacement behaviour of the founda...

The study concerns the application of the smoothed particle hydrodynamics (SPH) method within computational fluid dynamics. In the present study, a tank discharge with a falling head is investigated. Water is modelled as a viscous fluid with weak compressibility. An enhanced treatment of the solid boundaries is used within the two-dimensional SPH s...

In order to model real behavior of jackup platforms subjected to environmental conditions, a nonlinear dynamic analysis considering soil-structure interaction subject to wave loading is investigated. For this purpose, spudcans behavior, soil nolinear behavior near the structure, contact phenomena at the interface of the soil and foundation such as...

In order to model real behavior of Jack-up platforms subjected to wave loading, a nonlinear dynamic analysis considering soil-structure interaction (SSI) is investigated. For this purpose, a 3D Finite Element model of the platform under consideration is generated and Nonlinear Winkler Foundation method is employed for soil media modeling. Two condi...

A nonlinear seismic soil-pile-structure interaction (SSPSI) analysis of fixed offshore platforms constructed on pile foundations including both vertical and battered piles is presented. The analysis is carried out in time domain and the effects of soil nonlinearity, discontinuity at pile soil interfaces, energy dissipation through soil radiation da...