Maryam Ghodrat

Maryam Ghodrat
UNSW Sydney | UNSW · Faculty of Engineering

PhD, MIEAust

About

110
Publications
40,731
Reads
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1,070
Citations
Introduction
Maryam Ghodrat currently works as senior lecturer at the School of Engineering, and Information Technology, UNSW Canberra. She is broadly interested in fire science problems, utilizing numerical models and combustion and fluid dynamics theories to solve problems related to fire spread and wildfire-urban interface (WUI). Maryam research is also focused the application of CFD modeling in design and optimization of energy efficient technologies and environmental sustainability.
Additional affiliations
February 2020 - present
UNSW Sydney
Position
  • Professor (Associate)
May 2019 - January 2020
Western Sydney University
Position
  • Lecturer
August 2018 - August 2019
Western Sydney University
Position
  • Lecturer
Education
February 2011 - May 2014
UNSW Sydney
Field of study
  • Materials Sciences and Engineering

Publications

Publications (110)
Article
This paper presents a numerical study of multiphase flow in hydrocyclones with different configurations of cyclone size and spigot diameter. This is done by a recently developed mixture multiphase flow model. In the model, the strong swirling flow of the cyclone is modelled using the Reynolds stress model. The interface between liquid and air core...
Article
Most solar polygeneration systems use a single solar source to power the system. Despite their importance, dual-source systems received less attention. To address this gap, this study aims to analyze a new polygeneration arrangement that combines photovoltaic thermal (PVT) and flat plate collector (FPC). A detailed thermodynamic and economic analys...
Cover Page
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Wildfires in Wildland Urban Interface communities have rapidly grown in occurrence and strength over the past few decades due to the growing pace of urbanization and landscape transformation. Although the overall mechanism of fire spread in the WUI are identified, developing models that can predict fire spread in WUI is expected to be more challen...
Article
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Waste treatment using thermal technologies, such as incineration, leads to the production of pollutants and wastes, including fly ash (FA). Fly ash contains heavy metals (HMs) and other contaminants and can potentially pose high risks to the environment and negatively impact health and safety. Consequently, stabilizing fly ash prior to either use o...
Article
Studies on pressure-swirl atomizers have mainly focused on pressure-swirl atomizers with tangential input, however research on pressure-swirl atomizers with spiral path have been very limited and only the effect of some key parameters on the main properties of spray has been studied. In this research, using experimental methods and numerical detail...
Article
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In greenhouse horticulture, solar energy is the key to extending the greenhouse using seasonal or daily thermal storage technology and decreasing the energy consumption rate, especially in subtropical climate areas. Therefore, the present research aims to reach the optimal physical parameters of common greenhouses in northern areas of Iran to harne...
Article
This study aimed to numerically investigate the effect of diffusion time between H2 injection and ignition on mechanisms behind deflagration to detonation transition (DDT) in an inhomogeneous H2/Air mixture. The combustion chamber is a closed, rectangular tube with seven obstructions and a blockage ratio of 30%. From the top wall of the air channel...
Article
In this work, an Aspen Plus model was developed to study the plastic/biomass co-gasification thermodynamically. Tar inclusion and temperature restricted equilibrium approach were applied for model modification. Using different gasifying agents, it was found that steam co-gasification is superior to air and oxygen-gasified processes in terms of gas...
Article
Recently, new developments in the design and performance optimization of smart mechanisms associated with natural and man-made hazards have progressed considerably. This is mainly owing to advances in smart sensing mechanisms including communication and data technologies. This work provides a detailed overview of existing improvements on smart haza...
Article
Due to environmental and economic advantages, the production and utilization of renewable and eco-friendly fuels derived from residues have received attention globally. Gasification, a thermo-chemical waste valorisation method, is considered a flexible recycling method in terms of the employed feedstock, gasifier type, and the applications of the p...
Article
This paper investigates natural convection and entropy generation of the Nano-Encapsulated phase change materials (NEPCMs) in an inclined L-shaped cavity. The NEPCMs are made up of core and shell in which the PCMs are the core section that are capsulated in Nano-shells. These NEPCM particles go through phase change from solid to the liquid while ab...
Article
The melting heat transfer of capric acid Phase Change Material (PCM) was numerically addressed in a channel shape Thermal Energy Storage (TES) unit. A combination of Cu nanoparticles and copper foam was used to improve the charging time of TES. A fixed amount of copper foam was applied to improve the heat transfer rate. The enthalpy-porosity approa...
Article
The paper reports the natural thermo-bio-convection of gyrotactic microorganisms in a square cavity with two smaller square heat sources inside the cavity. The flow is assumed to be two-dimensional, steady, buoyancy-driven, and Newtonian. The work investigates the influences of thermal Rayleigh number, bio-convection Rayleigh number, Lewis number,...
Article
To meet the raising demands for energy and potable water, integration of power plants and desalination systems for large-scale coproduction have been widely used in the world. However, in remote and rural locations with no infrastructures such as power grids, integration of large-scale systems is not financially viable. This paper presents a concep...
Article
This review aims to present recent improvements and existing challenges in the design of wearable sensors used in the firefighters’ protective clothing. Wearable sensors are generally used directly on the body or placed on wearable items to monitor data for the safety of firefighters. Recently, wearable sensors have attracted much attention from re...
Article
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This paper presents an investigation on the effect of fire intensity of a wind driven surface fire, similar to a large wildfire, on an idealized structure located downstream from the fire source. A numerical simulation was conducted using an open source CFD code called FireFOAM, which is a transient solver for fire simulation and turbulent diffusio...
Article
In the current investigation, the counterflow methane/air premixed flame is placed in a plus-shaped burner and analyzed with and without platinum and rhodium catalytic walls. The effect of having the catalysts near the flame on the flame structure and pollutant emission is studied. To solve the problem, ReactingFOAM solver of OpenFOAM platform is u...
Article
Analysis of unsteady CH 4 /Air counterflow premixed flame into a newly designed plus-shaped channel is investigated in this study. The main objective is to explore the impact of platinum catalytic–coated walls of the combustion chamber on the flame characteristics and pollutant emissions. The OpenFOAM platform is used as a numerical simulation tool...
Article
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It is vital to ensure the safety of hydrogen infrastructures, such as hydrogen vehicles, since a failure in operation can result in a large fire that can severely damage property and cause personal injury. The purpose of this study is to understand how hydrogen fires differ from fires generated by vehicles powered by hydrocarbons inside tunnels, wh...
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The present study investigates exergy analysis of optimal designed spiral plate heat exchangers (SPHEs) based on energy criteria. A new design algorithm is developed to obtain a higher overall heat transfer coefficient and more compact SPHE by (1) maintaining the geometric aspect ratio (GAR), (2) enhancing channel pressure drops, and (3) minimizing...
Article
This paper presents a detailed analysis of the thermodynamic performance of spiral plate heat exchangers (SPHEs) and their channels by considering the fluid friction effect and no heat leakage to the environment. An optimal design algorithm for SPHEs is developed to find higher compactness and the overall heat transfer coefficient by increasing cha...
Article
Full-text available
In this study, a time-dependent investigation has been conducted to numerically analyze the impact of wind-driven surface fire on an obstacle located on sloped terrain downstream of the fire source. Inclined field with different upslope terrain angles of 0, 10, 20, and 30° at various wind-velocities have been simulated by FireFoam, which is a large...
Article
This paper presents a systematic analysis of the thermodynamic performance of spiral turns in spiral plate heat exchangers (SPHEs), with and without heat leakage to the environment. An optimal design algorithm for SPHEs is developed to find higher compactness and overall heat transfer coefficient by increasing channels' pressure drops, maintaining...
Article
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This paper presents a nonlinear analysis of the transient response of a porous medium affected by external traction. The formulation is presented based on a new modified G-L theory of thermoelasticity while temperature and strain rate parameters are included in the governing equations. Based on the finite strain theory (FST), the Lagrangian strain-...
Article
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In this article, exergoeconomic analysis of a hybrid desalination system driven by renewable geothermal energy source is investigated. Freshwater and electrical power are the products of this system. Humidification – dehumidification (HDH) unit works in parallel with reverse osmosis (RO) unit to produce freshwater and Kalina cycle is the power gene...
Article
Due to the intermittent/volatile nature of renewable energy resources, they may periodically fail to provide enough energy to complete the charging/discharging processes of Latent Heat Thermal Energy Storage (LHTES) systems. However, only a limited understanding is available for the implications of partial charging/discharging. To address this know...
Article
A review of recent articles on the design of Firefighting Protective Clothing (FFPC) is presented in this work, with the aim of assessing the impact of different efficiency criteria with respect to the design of such clothing. Firefighters often work in risky and extreme environments involving high heat exposure, and therefore protective fabrics ar...
Article
Wind tunnel measurement is conducted over two finite wall-mounted square cylinders in a staggered arrangement for various normalized cylinder distance (P* = P s /d, where d is the cylinders width). For all experiments, two identical square cylinders with an aspect ratio of 7 are positioned on a line with a staggered angle of 45 • relative to the in...
Article
Due to high energy demand and adverse effect of global warming, improving the performance of solar thermal systems is of great importance. In this respect, the transient flow and thermal behavior of turbulent naturally ventilated airflow in a flat plate solar air heater (SAH) are investigated numerically. To achieve this aim, conservation of mass,...
Article
This study presents a comparative experimental approach to analyze flame temperature, emissions and radiation behaviors of an oil furnace fueled with nano biodiesel blend fuel containing suspended energetic and non-energetic nanoparticles (NPs). Iron NPs were used as energetic nanoparticles and alumina (Al2O3) was selected as non-energetic NPs. A d...
Article
Studies on pressure-swirl atomizers have mainly focused on pressure-swirl atomizers with tangential input while there are limited studies on pressure-swirl atomizers with a spiral path. This study applies experimental and computational methods to provide a better understanding of flow development in this type of atomizer at the design point and out...
Article
Full-text available
Fire whirls are a particular case of flame behaviour characterized by a rotating column of fire driven by intense convective heating of air close to the ground. They typically result in a substantial increase in burning rate, temperature, and flame height. Fire whirls can occur in any intense flame environment, including urban areas, particularly w...
Article
The fast charging of thermal energy storage (TES) systems is a requirement for the practical application of these systems. The thermal energy should be stored in a unit within a reasonable time. The present research aims to minimize the thermal charging time of a latent heat TES unit by using aluminium foams, nanoparticles (copper oxide), and geome...
Article
Full-text available
In this work, a new design for the tri-generation cycle with solar energy resources using Therminol 66 in its parabolic thermal solar collectors has been proposed. The solar collectors absorb the solar energy and pass that to the Organic Rankine Cycle (ORC) with n-octane, n-pentane, n-hexane, and n-heptane working fluids. Besides, the energy loss o...
Article
The present article reveals the study of heat transfer via buoyancy-driven flow and entropy generation of magnetic Fe3O4–H2O nanoliquid inside a porous enclosure using two square cylinders. The shape factor of diverse particle shapes may well be also considered. Numerical technique called FEM is implemented for the transformed governing equations....
Article
The paper experimentally and numerically investigates the capability of the semi-cylindrical curved roofs in providing natural ventilation. Extensive measurements around a 1:17 scale model of a typical room with a semi-cylindrical roof have been conducted to determine the pressure and velocity field for gaining the discharge coefficients of apertur...
Article
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Natural convection (NC) of nanoliquids specifically in enclosures is of use in diverse fields such as solar collectors, HVAC, and medical treatment. Recent research shows that suspension of nano-materials within the base fluid enhanced the heat transfer performance. NC heat transfer of Al2O3–H2O nanoliquid within a crown cavity with a circular cyli...
Article
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This article presents a non-Fourier thermo-hyperelastic model to investigate thermal and stress wave propagation phenomenon in a near-incompressible functionally graded medium (FGM) for various thermal and mechanical boundary conditions. A strain energy function is chosen to modify FGM’s hyperelastic equations considering the coupling effects of me...
Article
The incorporation of simultaneous passive and active techniques for enhancing heat transfer has been a promising area of research in the last decades. As such, in the present study, thermal convection heat transfer of a hybrid nanofluid in a square cavity subjected to simultaneous effects of gravitational and vibrational forces has been addressed....
Article
Most of the food waste (FW) generated by commercial activities and the majority of household FW is collected as part of general waste, which is either incinerated or landfilled. There is an increasing interest in the collection of FW as a separate waste stream and use it for the production of compost or recovery of energy through anaerobic digestio...
Article
Palm oil biodiesel has been identified as a renewable energy source with a huge potential to replace liquid fossil fuels in the future. The current experimental work investigates the effect of using Al2O3 nanofuel produced by adding Al2O3 nanoparticles to 20 % blend of palm oil biodiesel with diesel fuel on the flame characteristics, radiation, tem...
Article
Full-text available
This work provides a detailed overview of existing investigations into the fire–wind interaction phenomena. Specifically, it considers: the fanning effect of wind, wind direction and slope angle, and the impact of wind on fire modelling, and the relevant analysis (numerical and experimental) techniques are evaluated. Recently, the impact of fire on...
Article
Full-text available
The principal aim of this study is to investigate the utilization feasibility of waste materials, i.e., recycled Polypropylene (PP), and fly ash in the formulation of auto parts which are commonly designed based on PP. The typical formulation of auto parts consists of PP, elastomer, filler, and compatibilizer. Various recycled PP/virgin PP ratios w...
Article
The current paper presents a review of recent studies on photovoltaic thermal (PV/T) systems to understand the effect of performance parameters. PV/T systems make electricity and store thermal energy; simultaneously and hence they enhance the overall efficiency. Despite significant progress in improving the performance of these technologies, there...
Article
The oily water from various sources in combined cycle power plants is collected in oil/water separator in which the oil separates from water due to the density difference. The idea of the presented geometry is taken from conventional oil/water separators. This paper studies the natural convection of the CuO-water nanoliquid in a rectangular cavity...
Article
In this research, numerical simulation of three-phase flow (airflow, sulfide concentrate particles, and liquid fuel droplets) within a copper flash smelting furnace was conducted to investigate the effect of combustion of the sulfur present in the sulfide concentrates on temperature distribution and species production. The effect of sulfide concent...
Article
A review of the recent studies on the generalized thermoelasticity theories and their associated modified models is presented. The aim is to outline an overview of the utilization and physical limitations of available relevant theories. By contrast to classical thermoelasticity theory, generalized thermoelasticity theories (second sound) can involv...
Article
Full-text available
This paper presents a numerical investigation of the impact of a wind-driven surface fire, comparable to a large wildfire, on an obstacle located downstream of the fire source. The numerical modelling was conducted using FireFOAM, a coupled fire-atmosphere model underpinned by a large eddy simulation (LES) solver, which is based on the Eddy Dissipa...
Conference Paper
Full-text available
The rising energy demand of buildings has illustrated the importance of employing sustainable energy sources. In this regard, the utilization of passive cooling systems such as windcatchers has attracted attention. In this study, the performance of a two-sided windcatcher with an evaporative cooling system was simulated and analyzed under various c...
Conference Paper
Full-text available
In this paper, the presence of Rhodium catalyst walls near the premixed counterflow methane-air flame into a plus-shaped channel is investigated. To simulate the flame structure, a time dependent numerical analysis is carried out. The impact of reaction time and equivalence-ratio, from lean to rich combustion, on the flame characteristics are analy...
Article
Full-text available
In this research, three aspects of modeling, analyzing, and optimizing spiral plate heat exchangers (SPHEs) are studied. The main objective of this work is to pave the way for comparing manufacturers’ designed SPHEs with theoretical designed SPHEs without involving designers in using computational methods. To begin, with assumption of constant over...
Article
Full-text available
Herein, a model is developed based on energy balance equations to analyze and improve the performance of single‐phase counter‐current and co‐current flow spiral plate heat exchangers (SPHEs). The aim is to comprehensively check the performance and irreversibility factors based on energy, entropy, and entransy methods. First, a new optimization algo...
Article
Full-text available
In the current work, an unsteady analysis of methane/air premixed counterflow flame is carried out for different flame conditions and stability parameters considering different strain rate values. The results are presented at unsteady and final steady conditions and the impact of time-dependent regimes and variations in equivalence ratio, from lean...
Article
In the current study, the flow behavior due to the variation of the tail angle of attack and its deflection has been investigated on a body–tail with a controlling tail. Numerical computations were carried out at a constant velocity of 90 m/s with the tail angle of attack and deflection ranging from 0 to 30 degrees. It provides a deeper understandi...
Article
This article presents an algorithm for nonlinear transient response of an elastic body with temperature-dependent material features in a large deformation domain exposed to short-pulse heating. The principal target of this paper is employing a general form of thermoelasticity equation, including temperature and strain rate-dependent model using fin...
Cover Page
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Article
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Low thermal response of latent heat thermal energy storage (LHTES) systems has been their main barrier in large-scale applications and commercialization. Amongst all proposed techniques, the incorporation of metal foam appears to be more promising owing to the notable thermal conductivity and high ratio of surface-area-to-volume. Nonetheless, metal...
Article
Full-text available
In this study, a nonlinear numerical method is presented to solve the governing equations of generalized thermoelasticity in a large deformation domain of an elastic medium subjected to thermal shock. The main focus of the study is on the modified Green–Lindsay thermoelasticity theory, solving strain and temperature rate-dependent model using finit...
Cover Page
Full-text available
I will manage and edit a special issue for Fire journal. Fire whirls are a usually rare but plausibly disastrous form of fire. They are seen during forest and wildland fires, where fire “cyclones” are distinguished by massive whirling flames. Fire whirls are often reported to occur in large-scale urban and forest fires and trigger substantial los...
Article
Solar heating and cooling technologies can have a vital role to play in understanding the targets in energy security, economic development, and mitigating climate change. This study aimed to investigate the performance of the combined solar cooling/heating system using a Photovoltaic Thermal collector (PVT) for residential applications. The main ad...
Article
Full-text available
Fire-driven flows associated with wind intervention can dangerously threaten buildings in bushfire-prone areas by increasing pressure load on the structures through fire-wind enhancement phenomenon. This phenomenon through which wind is enhanced by interacting with fire is exacerbated when the affected terrain is located in a positive slope area. T...
Article
Unraveling the physics of fire-wind interaction has long been a subject of interest. Among all the physics involved, enhancement of wind by fire deserves great attention due to its potential effects on building structures downstream of the fire source in bushfire attack events. Predominantly, two contributing factors determine the extent to which w...
Article
Full-text available
The nonlinear thermoelastic responses of an elastic medium exposed to laser generated short-pulse heating are investigated in this article. The thermal wave propagation of generalized thermoelastic medium under the impact of thermal loading with energy dissipation is the focus of this research. To model the thermal boundary condition (in the form o...
Article
Full-text available
The present study is devoted to the numerical analysis of entropy generation in the natural convection of water combined with nano-sized particles containing the encapsulated phase change material in a square enclosure with a solid triangular block. The finite element method is used for the current investigation. The effects of the Rayleigh (Ra), S...