Başlık için Mühendislik Fakültesi listeleme
Toplam kayıt 847, listelenen: 563-582
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New modified carrier-based level-shifted PWM control for NPC rectifiers considered for implementation in EV fast chargers
(TUBİTAK Scientific & Technical Research Council Turkey, 2023)In this study, the aim is to evaluate three-phase (3ϕ) AC/DC neutral point-clamped (NPC) power factor-corrected (PFC) multilevel converter performance for electric vehicle (EV) fast chargers. Power factor correction for ... -
New parameters for reduction of heating-based greenhouse gas emissions: A case study
(Springer New York, 2013)In this study, the effect of indoor temperature for heating on reduction of carbon dioxide emissions in Turkey is studied under various conditions. Two new parameters are introduced, namely, carbon dioxide emission reduction ... -
A new PWM technique for three-phase three-level neutral point clamped rectifier
(Springer, 2023)In this study, the aim is to evaluate three-phase (3 phi) three-level (3L) neutral point clamped AC/DC rectifier for high-power applications. The rectifier analysis has been simulated using a new modified carrier-based ... -
A new target radar cross section based passive radar surveillance receiver positioning algorithm on real terrain maps
(Spolecnost Pro Radioelektronicke Inzenyrstvi, 2018)Placing surveillance receivers on passive radar systems is a complex task because of the dependence on third party vendors. This paper presents an efficient and robust algorithm for positioning passive radar surveillance ... -
A new wide area-based algorithm to determine faulted line in series-compensated grid using k-nearest neighbor (k-NN) classification method
(Gazi Üniversitesi Mühendislik Mimarlık Fakültesi, 2021)Nowadays, series capacitors are frequently used to increase the transfer capacity and reduce losses on long transmission lines. They also play an important role in improving the voltage stability of the grid. In addition ... -
Nitrogen-doped TiO2 fibers for visible-light-induced photocatalytic activities
(Elsevier Sci Ltd, 2020)Nitrogen-doped TiO2 fibers (N-TiO2 Fs) were successfully and efficiently fabricated using titanium diisopropoxide bis(acetylacetonate) and polyvinylpyrrolidone (PVP) as a carrier polymer and nitrogen source via centrifugal ... -
Non-Newtonian laminar pulsating heat and fluid flow in plane duct
(Wiley, 2023)In the present study, laminar pulsating power-law momentum and heat transfer in a uniformly heated plane duct is studied analytically. Assuming that fully developed conditions exist both hydrodynamically and thermally, a ... -
A novel approach for estimation of photovoltaic exergy efficiency
(Pergamon-Elsevier Science Ltd, 2012)In this study, a novel approach is proposed to determine the maximum amount of exergy from the sun when applied to a conventional photovoltaic (PV) system in order to formulate its exergy efficiency. the variations of ... -
Novel binder material in geopolymer mortar production: Obsidian stone powder
(Wiley, 2023)This paper presents the results of mechanical and micro-structural properties of geopolymer mortars with obsidian, ground granulated blast furnace slag, and metakaolin. In this study, 13 different combinations were created ... -
A novel efficient PV - battery powered LED lighting scheme
(Ieee, 2017)This paper presents a novel fully controlled, flexible and self-adjusting LED lighting PV-Battery powered scheme using a pulse-width modulation (PWM) switching. This scheme is controlled a dual-loop error driven, time ... -
A novel fish-drying technique for better environment, quality and sustainability
(2010)This study deals with the development of appropriate sustainable strategies for environmental-benign aquatic processing systems. In this regard, the interactions between the aquatic system and its environment are first ... -
A novel framework for strength prediction of geopolymer mortar: Renovative precursor effect
(Elsevier, 2023)Concrete is the most used building material today as it has many advantages due to its structure. Geopolymer composites could potentially replace concrete in the future due to the demands of the construction industry. The ... -
A novel grey wolf optimizer based load frequency controller for renewable energy sources integrated thermal power systems
(Taylor & Francis Ltd., 2022)The frequency value should be kept constant to ensure and maintain synchronization in power systems. When the balance between generation and load is interrupted, the frequency value increases or decreases. This frequency ... -
A novel latent heat storage unit by introducing jet breakup of phase change material
(Elsevier, 2022)To enhance the heat transfer performance in discharging process, the jet breakup of molten phase change material was introduced into a real scale heat storage unit by numerical method. In order to fully understand its ... -
A numerical analysis of convection heat transfer and friction factor for oscillating corrugated channel flows
(Taylor and Francis Ltd., 2019)The aim of this article is to understand numerically the flow and heat transfer characteristics under oscillating flow conditions for periodically corrugated wavy channel. For the same channel, under steady-state flow ... -
Numerical analysis of entropy generation in a square cavity filled with boron-water nanofluid
(Springer Heidelberg, 2020)The entropy generation and natural convection in a square cavity filled with boron-water nanofluid is numerically investigated under the influence of different nanoparticle volume fractions and buoyancy forces when heated ... -
Numerical analysis of the receding contact problem of two bonded layers resting on an elastic half plane
(Techno-Press, 2019)The present study deals with the numerical analysis of the symmetric contact problem of two bonded layers resting on an elastic half plane compressed with a rigid punch. in this context, Finite Element Method (FEM) based ... -
The numerical evaluation of crash performance of the pressurized thin-walled tubes
(Springer, 2022)This paper aims to investigate the energy absorption characteristics of the pressurized thin-walled tubes under axial impact by numerical simulations. The Arbitrary Lagrangian-Eulerian (ALE) model with the Fluid-Structure ... -
Numerical investigation for convective heat transfer and friction factor under pulsating flow conditions
(E D P Sciences, 2018)For pulsating flow, the behaviours of the convective heat transfer and friction factor for a periodic corrugated channel are investigated numerically. the finite volume method is used in the numerical study. Three different ... -
Numerical investigation of creeping rockmass interaction with hardening and shrinking cemented paste backfill
(Elsevier, 2022)Revealing the interaction mechanism between the time-dependent deformation of rockmass and hardening backfill are important for successful mining design. Based on laboratory tests and numerical simulation, a framework has ...
