Browsing Department of Mechanical Engineering by Title
Now showing items 4-23 of 47
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Design and analysis of an alkaline fuel cell
(Yildiz Technical University, 2023)This study provides a step-by-step, up-to-date fuel cell fundamentals, thermodynamic and electrochemical principles, and system evaluation factors via a case study of a 10-kW alkaline fuel cell designed to operate in space ... -
Design and Analysis of Gas Diffusion Layers in a Proton Exchange Membrane Fuel Cell
(MDPI, 2022)A proton exchange membrane fuel cell is an energy convertor that produces environmentally friendly electrical energy by oxidation of hydrogen, with water and heat being byproducts. This study investigates the gas diffusion ... -
Design and Comparison Analysis of Various Flow Configurations in Bipolar Plates via Numerical Simulation
(Canadian Center of Science and Education, 2021)Bipolar plates play a major role in the overall performance of fuel cells, hence their proper design and optimization are essential. In this regard, pressure drop across bipolar plates has a major impact on the efficiency. ... -
Design and Optimization of Fuel Cells: A Case Study on Polymer Electrolyte Membrane Fuel Cell Power Systems for Portable Applications
(Wiley, 2022)Fuel cells are energy conversion devices that directly convert chemical energy of fuels such as hydrogen to useful work with negligible environmental impact and high efficiency. This study deals with thermodynamic analysis ... -
Design and simulation of a UOIT copper–chlorine cycle for hydrogen production
(Wiley, 2012)A design and simulation study of the four-step copper–chlorine (Cu–Cl) cycle using Aspen Plus software (Aspen Technology Inc., Cambridge, MA)is reported. The simulation consists of four main sections: hydrolysis, ... -
Design and Utilization of a Direct Methanol Fuel Cell
(MDPI, 2022)This study introduces a step-by-step, summarized overview of direct methanol fuel cell (DMFC) fundamentals, thermodynamic–electrochemical principles, and system evaluation factors. In addition, a parametric investigation ... -
Development of a Flexible Framework Multi-Design Optimization Scheme for a Hand Launched Fuel Cell-Powered UAV
(MDPI, 2021)This paper presents different methods for the design of a hand-launchable, fixed wing, fuel cell-powered unmanned aerial vehicle (UAV) to maximize flight endurance during steady level flight missions. The proposed design ... -
Dynamics of a four-bar mechanism with clearance and springs - Modeling and experimental analysis
(Korean Society of Mechanical Engineers and Springer, 2017)This paper presents a study of the dynamic behavior of a planar four-bar mechanism with clearance. A spring is added to improve the dynamic response of the mechanism with clearance. Simulations and experimental tests are ... -
Energy assessment of an integrated hydrogen production systemEnergy assessment of an integrated hydrogen production system
(Elsevier, 2022)Hydrogen is believed to be the future energy carrier that will reduce environmental pollution and solve the current energy crisis, especially when produced from a renewable energy source. Solar energy is a renewable source ... -
Enhancement of the corrosion resistance of mild steel with femtosecond laser- nanostructuring and CrCoNi medium entropy alloy coating
(Elsevier, 2022)In this work, the corrosion resistance of mild steel surface nanostructured with a femtosecond laser and coated with high corrosion resistant CrCoNi (CCN) medium entropy alloy through magnetron sputtering is studied. ... -
Environmental Analysis of Sustainable and Traditional Cooling and Lubrication Strategies during Machining Processes
(MDPI, 2020)Due to rising demands of replacing traditional cooling strategies with sustainable cooling strategies, the development of sustainable strategies such as minimum quantity lubrication (MQL) of nano-cutting fluids (NCFs) is ... -
Evaluating velocity and temperature fields for Ranque Hilsch vortex tube using numerical simulation
(Elsevier, 2021)In this study, a three-dimensional numerical investigation is carried out to study the flow field inside a Ranque-Hilsch vortex tube (RHVT) model. Flow parameters such as velocity, temperature, and pressure are plotted at ... -
Evaluating velocity and temperature fields for Ranque Hilsch vortex tube using numerical simulation
(Elsevier, 2021)In this study, a three-dimensional numerical investigation is carried out to study the flow field inside a Ranque-Hilsch vortex tube (RHVT) model. Flow parameters such as velocity, temperature, and pressure are plotted at ... -
Exergy analysis of heat exchangers in the copper–chlorine thermochemical cycle to enhance thermal effectiveness and cycle efficiency
(Oxford University Press, 2011)Most existing nuclear power plants in North America are typically water-cooled and operate at 250–500°C. For this temperature level, the copper–chlorine (Cu–Cl) cycle is one of the most promising cycles that can be integrated ... -
Fluid properties impact on energy separation in Ranque–Hilsch vortex tube
(Springer Nature, 2022)This paper examines the energy separation in vortex tubes which is a passive device that can split a pressurized room temperature gas stream to hot and cold streams. The paper employs numerical simulations to investigate ... -
Functional fatigue of Ni50.3Ti25Hf24.7 - Heterogeneities and evolution of local transformation strains
(Elsevier, 2017)Shape memory alloys achieve their unique and desirable property of large recoverable strains through phase transformation. The attained magnitudes of transformation strains is strongly affected by the level of deformation ... -
Hydrogen Supplement Co-combustion with Diesel in 2 Compression Ignition Engine
(Elsevier, 2015-10)The present work investigates experimentally the behavior of compression ignition engine while boosting the combustion by enriching air-intake manifold with hydrogen supplement at the atmospheric condition. The study reports ... -
Identification of the Uncertainty Structure to Estimate the Acoustic Release of Chemotherapeutics From Polymeric Micelles
(IEEE, 2017)This paper estimates the acoustic drug release from micelles after accurately identifying the underlying statistical noise characteristics in experimental data. The drug release is measured as a change in fluorescence as ... -
Identifying Friction in a Nonlinear Chaotic System Using a Universal Adaptive Stabilizer
(IEEE, 2022-04)This paper proposes a friction model parameter identification routine that can work with highly nonlinear and chaotic systems. The chosen system for this study is a passively-actuated tilted Furuta pendulum, which is known ... -
In-Vitro Degradation of Hollow Silica Reinforced Magnesium Syntactic Foams in Different Simulated Body Fluids for Biomedical Applications
(MDPI, 2020)This article reports the mechanical and biocorrosion behaviour of hollow silica nanosphere (SiO₂) reinforced (0.5–2 vol.%) magnesium (Mg) syntactic foams. Room temperature tensile properties’ characterization suggests that ...