Browsing Makine Mühendisliği Bölümü Koleksiyonu by Title
Now showing items 57-76 of 113
-
Lanthanum rare earth element doped zinc oxide nanostructures: synthesis, structural, morphological, topographical and optical investigations
(TAYLOR & FRANCIS LTD, 2025)Undoped ZnO and ZnO nanostructures doped with 2 at. % and 4 at. % lanthanum (La)-doped ZnO, deposited onto glass substrates by using spray pyrolysis technique, are investigated. The impact of La doping on the structural, ... -
Mathematical programming basis for ship resistance reduction through the optimization of design waterline
(Springer Japan Kk, 2017)It has been more than a decade since Calisal et al. (J Ship Res 46(3):208-213, 2002) presented their concept of wave resistance reduction by allowing an increase in the beam of a ship accompanied by smoothing the shoulders. ... -
Mid-infrared optical coherence tomography as a method for inspection and quality assurance in ceramics additive manufacturing
(Elsevier, 2022)In the past decade, significant progress has been made in ceramics additive manufacturing (AM). Material research and the rapid evolution of high-resolution printing technologies enabled the production of high-quality, ... -
Modeling of twin-turbine systems with vertical axis tidal current turbine: Part II-torque fluctuation
(Pergamon-Elsevier Science Ltd, 2011)We recently showed the advantage of using a numerical system to extract energy from tidal currents by developing a new twin-turbine model (Li and Calisal, 2010a). Encouraged by this result, we decided to use this model to ... -
Modeling of twin-turbine systems with vertical axis tidal current turbines: Part I-Power output
(Pergamon-Elsevier Science Ltd, 2010)Recent interest in the tidal current industry has driven development of the prototype from the stand-alone turbine to the twin-turbine system. In this paper, we develop a numerical model to systematically analyze the ... -
Modification of surface and subsurface properties of cold-rolled Ti6Al4V sheets through water jet shot peening
(IOP Publishing Ltd., 2025)Titanium alloys possess remarkable properties, such as high strength, biocompatibility, and resistance to corrosion. Nonetheless, both their surface and subsurface properties require improvements, particularly for applications ... -
Multi Objective Design of Ships; A Pareto Procedure
(Springer Science and Business Media Deutschland GmbH, 2021)The design calculations for a displacement type vessel and for a planing hull are done for the main dimensions, starting with a fuel and acceleration criteria. A large number of vessels are simulated with the help of ... -
A New Heat Transfer Correlation For Oscillating Fluid Flow
(Vinca Inst Nuclear Sci, 2018)In this study, heat transfer under oscillating flow conditions has been investigated conducting a wide range of experiments using water as the flow medium. Experimental data have been reduced to obtain relevant heat transfer ... -
NiZnFe2O3 Quaternary Alloy Nanoparticles to Evaluate Antibacterial Activity against Imipenem-Resistant Bacteria
(Sami Publishing CO-SPC, 2025)Carbapenem-resistant Escherichia coli (E. coli) and Klebsiella pneumoniae (K. pneumoniae) infections pose a significant threat to public health due to limited treatment options. Nanoparticles (NPs), particularly those with ... -
Numerical analysis of hydrogen production by methanol and methane steam reforming using compact reactors
(Elsevier Ltd., 2025)The steam reforming performance of methane and methanol in compact reactors in marine environments are investigated by using numerical models. Optimal operation conditions and output performances are evaluated for various ... -
Numerical Investigation of the Effects of the Baffles Added in a Concentric Pipe Heat Exchanger
(Edizioni Ets, 2019)In this numerical work, the effects of baffles added in a Concentric Tube Heat Exchanger are studied, using a commercial software CFD (Computational Fluid Dynamics) package. The CFD model is made to grab all the physical ... -
Numerical modeling of friction stir welding using experimental temperature data
(Ice Publishing, 2020)In this study, time-dependent heat-transfer analysis of friction stir welding of AA 6061-T651 plates was carried out. For this purpose, the Comsol code was utilized, by which the domain was modeled as a rectangular aluminum ... -
Numerical simulation of pressure loss in porous media in oscillating flow
(World Scientific and Engineering Academy and Society, 2018)In this study, the pressure loss in two types of porous media for both unidirectional and oscillatory flows is analyzed using commercial software Comsol©. The numerical results are compared with those obtained in the ... -
Numerical simulation of transient heat transfer in friction-stir welding
(Edizioni Ets, 2018)In this numerical study, three dimensional transient heat transfer analysis of Friction Stir Welding of two 8mm-thick AA-6061-T651 (an aluminum alloy) slabs has been performed. The numerical tool is the commercial package ... -
Numerical Study of Heat Transfer in A Porous Medium of Steel Balls
(Vinca Inst Nuclear Sci, 2019)In this study, heat transfer in unidirectional flow through a porous medium with the fluid phase being water is analyzed using the commercial software Comsol((c)). The aim of the study is to validate the suitability of ... -
A numerical study on squat of a wigley hull
(2011)A numerical study is conducted to calculate the squat for a wigley hull. An approach based on slender body theory is used to convert the three dimensional ship problem into a series of two dimensional problems in cross ... -
On flow fluctuation's impact on the performance of vertical axis turbines-A potential flow analysis
(Amer Inst Physics, 2017)During the last decade, with rapidly increasing deployment of tidal current turbine prototypes in many countries, a number of failures have been reported. Several of these failures were attributed to the intensive flow ... -
On Z-Symmetric Manifold Admitting Projective Curvature Tensor
(DergiPark, 2022)The object of the present paper is to study the Z-symmetric manifold with the projective curvature tensor. At first, we study the case of Z-tensor and projective Ricci tensor being of Codazzi type. Next, we consider recurrent ... -
Online optimization of engine control unit to satisfy performance and drivability metrics
(Gazi Universitesi, 2024)The purpose of this study is to develop combined objective evaluation metrics for drivability and performance attributes and a self-tuning algorithm that yields optimized performance and drivability based on developed ... -
Optical Waveguide of Lithium Niobate Nanophotonics
(Wiley, 2023)Lithium niobate (LiNbO3) is single crystal and important material for optical waveguides, mobile phones, piezoelectric sensors, optical modulators, and various other linear and nonlinear optical applications. Nanophotonics ...
