Güncel Gönderiler: Makine Mühendisliği Bölümü Koleksiyonu
Toplam kayıt 99, listelenen: 81-99
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Investigating the influence of tool shape during FSW of aluminum alloy via CFD analysis
(Chinese Inst Engineers, 2016)This paper describes the application of the CFD code, Comsol Multiphysics, to modeling the 3-D metal flow in friction stir welding of AA 2024-T3 aluminum alloy in order to investigate the influence of tool shape over the ... -
A Detailed Analysis of Ideal Rankine Steam Cycle
(Amer Soc Naval Eng Inc, 2016)In this theoretical work, the ideal Rankine cycle using water vapor is studied in detail considering a condenser pressure range of 10-80 kPa, a boiler pressure range of 3-15 MPa and a superheater temperature range of 350-600 ... -
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 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 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 ... -
An overview of wire arc additive manufacturing (WAAM) in shipbuilding industry
(Taylor & Francis Ltd, 2020)Increasing competition in the international shipbuilding industry pushes the naval architect's pressure to reduce the costs of design and manufacturing of new buildings. Using newly developed Additive Manufacturing (AM) ... -
Production and characterization of recycled polyester (r-PET) blend vortex and ring spun yarns
(Taylor & Francis Ltd, 2020)Nowadays, many major fashion brands are now producing recycled polyester (r-PET) textile products from PET bottles to contribute to sustainability. Of course, this means that textiles containing r-PET will now be produced ... -
Estimating Power Output from a Tidal Current Turbine Farm with First-order Approximation of Hydrodynamic Interaction between Turbines
(Taylor & Francis Inc, 2010)This article presents a numerical approach to estimate power output from a tidal current turbine farm with first-order approximation of hydrodynamic interactions between multiple turbines. An example study is conducted by ... -
Three-dimensional effects and arm effects on modeling a vertical axis tidal current turbine
(Pergamon-Elsevier Science Ltd, 2010)Three-dimensional effects in studying a vertical axis tidal current turbine are modeled using a newly developed vortex method. The effects on predicting power output and wake trajectory are analyzed in particular. The ... -
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 ... -
An Integrated Approach to Increase Marine Transportation Safety in Harbor Areas
(Marine Technology Soc Inc, 2017)The importance of marine transportation safety in harbors and waterways access has become a very serious governmental concern in recent years, with the holding of special conferences on major marine disasters, increasing ... -
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 ... -
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 ... -
Predicting air permeability and porosity of nonwovens with image processing and artificial intelligence methods
(Taylor & Francis Ltd, 2020)This study was conducted to investigate the relationship between the fiber distribution and the permeability properties of the hydroentangled nonwoven fabrics in terms of air permeability and porosity. The fiber distribution ... -
An integrated model for estimating energy cost of a tidal current turbine farm
(Pergamon-Elsevier Science Ltd, 2011)A tidal current turbine is a device for harnessing energy from tidal currents and functions in a manner similar to a wind turbine. A tidal current turbine farm consists of a group of tidal current turbines distributed in ... -
Development of an Algorithm to Determine the Liquid Spreading Area of Airlaid Nonwoven Fabrics by Image Processing Method
(Ege Univ, 2020)Today, many quality controls processes that are controlled by Image Processing (IP) technique has achieved state-of-the-art performance for all technology field. The image processing technique, which provides as accurate ... -
Ibragimov-Gadjiev operators based on q-integers
(Pushpa Publishing House, 2018)In this paper, we define the q-analogue of the generalized linear positive operators introduced by Ibragimov and Gadjiev in 1970. We study some approximation properties of these new operators, and we show that this sequence ... -
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. ... -
Yenilenebilir Enerjinin Gemilerde Kullanılması: Bir Yağ Barcına Kurulan Hibrit Sistemin Ekonomik ve Çevresel Analizi ile Optimizasyonu
(2019)Artan enerji talebi, akaryakıt fiyatları ve fosil yakıtlardan kaynaklanan olumsuz çevresel etkiler, yenilenebilir ve sürdürülebilir enerjiye olan talebi artırmaktadır. Bu nedenle, rüzgâr ve güneş enerjileri günlük hayatta ...
