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41
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Introduction
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August 2018 - present
Publications
Publications (41)
Energy and water are the core of sustainable development pathway for any remote community. Moreover, clean energy powered water desalination is essential for climate resilience. Combination of solar chimney power plant with seawater desalination system is proposed to overcome both clean energy and clean water resource challenges for remote areas. I...
This paper presents a performance assessment of green hydrogen production in several coastal locations in Egypt. The assessment is based on a performance analysis of the potential for green hydrogen production systems driven by solar photovoltaics based on the available solar irradiance in 25 selected locations in three coastal Egyptian regions. A...
Viscoelastic composites are widely used in engineering applications, necessitating a comprehensive understanding of their effective response to external loads. This study employs peridynamic computational homogenization theory to investigate the influence of phase contrast and inclusion shape on the effective properties of these composites. By focu...
This article presents a computational homogenization framework for viscoelastic composites within the framework of non-ordinary state-based peridynamic theory. The motivation to develop this framework stems from the desire to develop a homogenization scheme that can model processes and phenomena that are driven by nonlocal behaviour such as size ef...
With the recent increase in energy demand due to social, development and economic reasons in Egypt, solar
energy is one of the most abundant renewable energy resources which can be utilized to meet these needs.
Although Photovoltaic (PV) technology has been used with large scale in Egypt in different applications, it’s still suffering from losing...
This paper proposes a framework for implementing viscoelastic constitutive model from the classical continuum mechanics (CCM) theory within non-ordinary state-based peridynamics (NOSBPD). The motivation stems from the inadequacy of CCM to model very complex material behaviours such as initiation and propagation of cracks and nonlocal behaviour due...
In this work, we address the mechanical response of the flat sheet polymeric water treatment membranes under the assumed operational loading conditions. Firstly, we perform quasi-static analyses of the membranes under normal pressure loads, which is the condition that resembles the actual loading for flat sheet membranes in the submerged membrane b...
Photovoltaics (PV) is a method of converting solar energy into direct current electricity using semiconducting materials that exhibit the photovoltaic effect. Cracking in PV panels can cause performance degradation in PV panels. In this study, a new computational methodology, peridynamics is utilised to investigate the cracking behaviour in PV pane...
The main objective of this study is to develop a fast and validated model to predict the motions’ responses of a spar-buoy wave energy converter based on oscillating water column principle. Experiments and former investigations highlighted the strong effect of the spar-buoy heave motion on the performance of the OWC whereas water oscillations sligh...
The majority of the population living in coastal remote areas does not have access to energy sources in Egypt. Development of living standards in such areas without infrastructure can be achieved through floating power stations. Novel cylindrical power station powered by hybrid marine renewable resources is proposed to overcome energy shortage in s...
This article investigates the performance of a partially submerged floating photovoltaic system (PSFPV) as a proposal for harvesting solar energy as an electricity production novel system under Egyptian hot climate on calm water surfaces. The proposed system comprised of a floating photovoltaic system with a submerged portion in the surrounding wat...
In offshore locations with harsh environment, the operation of cylindrical floating production storage and offloading (FPSO) becomes more challenging. Poor motion performance can severely affect the structural safety, mooring system's strength and riser's operation. Therefore, interceptor plate installation above the cylindrical heaveplate is propo...
Despite a load below the elastic limit is applied on a viscoelastic material, the material may fail after a long duration of constant loading because of the time-dependent viscous deformations. In this regard, a viscoelastic material model in the ordinary state-based peridynamic framework is proposed to capture crack propagation in polymeric water...
This study presents a novel method for modelling of Eulerian incompressible fluid flow by using peridynamic differential operator. The peridynamic differential operator is used to calculate partial derivatives in the Navier-Stokes equations. The pressure Poisson equation is used to obtain the pressure field whereas the velocity field is obtained by...
Supplying freshwater to remote coastal communities has become challenging due to poor infrastructure and these areas being far from national grids of water in Egypt. A novel FPSO desalination plant powered by on-grid source was proposed to reduce the freshwater shortage in remote coastal cities. The innovative concept has mobility feature to serve...
Reliable evaluation of mechanical response in a porous solid might be challenging without any simplified assumptions. Peridynamics (PD) perform very well on a medium including pores owing to its definition, which is valid for entire domain regardless of any existed discontinuities. Accordingly, porosity is defined by randomly removing the PD intera...
An on-grid floating desalination plant (FDP), powered by conventional fossil fuel, was recently proposed to support freshwater demands in some remote coastal cities that have electricity grid networks. The aim of this study is to investigate feasibility of integrating a wind turbine into the same FDP platform to be suitable for off-grid services wi...
Floating desalination plants are fairly new technologies and are not as common as the traditional land-based desalination plants. Almost none of the proposed nor installed projects' designers indicates that the design is environmentally driven, and only few designs are environmentally assessed. This paper aims to highlight the significant role of t...
Motivated by social and environmental reasons, water scarcity has become a global top agenda item. Egypt is one of the countries suffering from an acute shortage of freshwater. A promising novel and efficient solution to overcome Egypt's freshwater shortage, especially in remote coastal areas far from the national grid of freshwater and electricity...
Motivated by soial and environmental reasons, water scarcity has become a global top agenda item. Egypt is one of the countries suffering from an acute shortage of freshwater. A promising novel and efficient solution to overcome Egypt’s freshwater shortage, especially in remote coastal areas far from the national grid of freshwater and electricity,...
The aerodynamic performance of a 3-D NACA 6409 wing in ground effect was examined numerically with different wing configurations. The influence of changing twist angles, anhedral angles, taper ratios, and sweep angles on the aerodynamic performance was examined and compared with based model. Structured mesh domains were built, and RANS turbulence m...
— this paper aims to develop an innovative solution
to generate electricity using a modular Hybrid Floating Power
Station (HFPS) located in SACA. The proposed floating station
will offer mobility, sustainable energy source, grid-off and zero
emission power source as a unique idea to harvesting three
sources of renewable energies. Gulf countries are...
this paper aims to develop an innovative solution
to generate electricity using a modular Hybrid Floating Power
Station (HFPS) located in SACA. The proposed floating station
will offer mobility, sustainable energy source, grid-off and zero
emission power source as a unique idea to harvesting three
sources of renewable energies. Gulf countries are i...
The supply of freshwater has become a worldwide interest, due to serious water shortages in many countries. Due to rapid increases in the population, poor water management, and limitations of freshwater resources, Egypt is currently below the water scarcity limit. Since Egypt has approximately 3000 km of coastlines on both the Red Sea and the Medit...
The study of hydrodynamic performance of vertical axis marine current turbine in unsteady marine current environment is still an open-ended research question. The interaction between the turbine and marine current frequencies can lead to resonance condition. In this work, a numerical approach to investigate the performance of VAMCT under unsteady c...
This work presents a numerical simulation of a VAMCT in both steady and fluctuated current velocities. Different numbers of blade turbines were examined in this study in order to investigate the relationship between the current fluctuation frequency, the number of turbine blades and turbine frequency. Fluent is used to solve the 2-D model using the...
This paper investigates the blade geometrical parameters that affect the performance of Vertical Axis Marine Current Turbine (VAMCT). The power coefficient of the turbine is numerically obtained at various Tip Speed Ratios (TSR). The turbine model was studied using a time-accurate Rey-nolds-averaged Navier-Stokes (RANS). A transient rotor-stator mo...
Extraction the power from wave energy attracts more and more attention in recent years due to its high energy density power. Oscillating Water Column (OWC) wave energy converter system is one of the most successful wave energy extraction technologies. Adaption of an internal subdivision wall to the OWC chamber is proposed in this study, aiming to i...
Oscillating Water Column (OWC) wave energy converter system is one of the most successful wave energy extraction technologies. Adaption of a ducted entrance to the OWC chamber is proposed in this study, aiming to improve its hydrodynamic energy extraction performance. A two-dimensional CFD simulation for a traditional onshore OWC device is carried...
Motivated by the importance of investigating the hydrodynamic performance of Verti-cal Axis Marine Current Turbine (VAMCT) in field like to real marine environment, this work presents numerical simulation of VAMCT in both steady and unsteady current velocity. Three bladed turbine is examined in order to evaluate the performance of VAMCT in fluctuat...
Pre-swirl stator concept is proposed in this paper to improve the overall efficiency of Horizontal Axis Tidal Turbine (HATT). Numerical simulation of HATT with and without pre-swirl sta-tor concept is conducted in different Tip Speed Ratio (TSR). A three bladed tidal turbine is numerically modelled and solved by a three-dimensional finite volume so...
Motivated by the importance of investigating the hydrodynamic performance of Vertical Axis Marine Current Turbine (VAMCT) in field like to real marine environment, this work presents numerical simulation of VAMCT in both steady and unsteady current velocity. Three bladed turbine is examined in order to evaluate the performance of VAMCT in fluctuati...
Pre-swirl stator concept is proposed in this paper to improve the overall efficiency of Horizontal Axis Tidal Turbine (HATT). Numerical simulation of HATT with and without pre-swirl stator concept is conducted in different Tip Speed Ratio (TSR). A three bladed tidal turbine is numerically modelled and solved by a three-dimensional finite volume sol...
Power prediction for WIG crafts is challenging. This is due to the lack of information about its performance data, and hence, there is no simple method for power prediction yet available that can be used in the preliminary design stage. In this paper, a method to predict the required power for WIG craft is presented. The authors assume that WIG cra...