Browsing Makina Mühendisliği Bölümü / Department of Mechanical Engineering by Issue Date
Now showing items 1-20 of 40
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Gözenekli malzemelerin sönümlemeye etkisi
(Afyon Kocatepe Üniversitesi, 2011)Gözenekli ve gözeneksiz malzemelerin titreşim büyüklüğü araştırılmıştır. Metalik köpükler kullanılmıştır. Köpük doğal bir ürün değildir. Kapalı ve açık hücreli metalik köpükler mevcuttur. Gözenekli malzemede sönümleme ... -
Damping properties of open pore aluminum foams produced by vacuum casting and nacl dissolution process
(Elsevier, 2013)In this study,damping ratios of 3 samples made of aluminum foam material, which have different-density pores, were calculated, the effects pore density on damping were examined. Experimental modal analysis method was used ... -
The place of pedagogical training in engineering education
(2014)Academic personnel attendant in engineering education predominantly performs educational functions besides research functions, development and laboratory works. At this stage, the communication and interaction between ... -
The implementation of the high technology methods of cutting on st 50 alloyed steel and the examination of the effects of cutting operation at the surface of material
(2014)Since competition has risen in the manufacturing methods of present conditions, the chance of competition has lost in the situations which new or high technologies aren't exactly known. The proper selection is important ... -
Alternative approach for the derivation of an eigenvalue problem for a Bernoulli-Euler beam carrying a single in-span elastic rod with a tip-mounted mass
(TECHNO-PRESS, 2015)Many vibrating mechanical systems from the real life are modeled as combined dynamical systems consisting of beams to which spring-mass secondary systems are attached. In most of the publications on this topic, masses of ... -
Ultra Düşük Sıcaklıklarda Çalışan İki Kademeli Bir Soğutma Sisteminde Aşırı Soğutma ve Isıtmanın Performansa Etkilerinin Sayısal İncelenmesi
(2017)Soğutma sistemleri çalışılmak istenen soğutma sıcaklığına bağlı olarak çeşitli kategorilere ayrılmaktadır. -50°C ve -100°C sıcaklık aralığında gerçekleştirilen soğutma işlemleri ultra düşük sıcaklık uygulaması sınıfına ... -
The performance evaluation of CO2 transcritical booster and R290/R744 cascade refrigeration systems for different cities in Turkey
(International Institute of Refrigeration, 2017)CO2 as a natural and fully environmentally friendly refrigerant has become more preferable in refrigeration systems in recent years. Since its critical temperature is much lower than that of other refrigerants. It is mostly ... -
Experimental and Numerical Analyses of A Heat Pump-Driven Chilled Ceiling Systems
(Begell House, 2018)Passive cooling covers the natural processes of heat dissipation and heat gain operations and provides a highly efficient, comfortable environment around. As commonly known, when air is heated, it rises, when cooled, it ... -
Numerical investigation for convective heat transfer and friction factor under pulsating flow conditions
(EDP 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 ... -
Computational investigation of the velocity and temperature fields in corrugated heat exchanger channels using RANS based turbulence models with experimental validation
(INDERSCIENCE ENTERPRISES LTD, 2018)The characteristics of convective heat transfer and friction factor for periodic corrugated channels are investigated numerically. In the numerical study, the finite volume method (FVM) is used. Three different Reynolds ... -
Dalgalı Yüzeyli Isı Değiştirici Kanallarında Hız ve Sıcaklık Alanlarının “Rans” Tabanlı Türbülans Modelleri ile Sayısal İncelenmesi ve Deneysel Doğrulaması
(TMMOB MAKİNA MÜHENDİSLERİ ODASI, 2018)Levhalı ısı değiştiricilerinde yaygın olarak kullanılan periyodik dalgalı yüzeyli kanal için taşınımla ısı geçişi ve sürtünme faktörü sayısal incelenmiştir. Sayısal çalışmada Sonlu Hacimler Yöntemi (Finite Volume Method ... -
Improving performance of transcritical CO2 systems, using phase change materials (PCM) in a cold storage application
(International Institute of Refrigeration, 2019)Thermal energy storage is one of the most promising solutions for energy savings and increasing efficiency. To improve the performance of cold storage applications, incorporating phase change materials (PCM) to these ... -
Characterisation and comparison of disc brake pads of heavy vehicles by experimental methods
(INDERSCIENCE ENTERPRISES LTD, 2019)In this study, characteristics of disc brake pads of heavy vehicles produced by three different manufacturers were compared experimentally. The former pad is the original (OEM), the latter pad is the subsidiary industrial ... -
Örnek Bir Malzemede Lineer Isı İletiminin Deneysel ve Sayısal Olarak İncelenmesi
(TMMOB MAKİNA MÜHENDİSLERİ ODASI, 2019)Literatür çalışmaları incelendiğinde; metalik malzemelerin, yapı malzemelerinin ve karma malzemelerin ısı iletim katsayılarının belirlenmesini, birbirine göre üstünlüklerinin ve zafiyetlerinin tespitini sağlayan bir ... -
R744/R404a Kaskat Soğutma Sistemi Performansının Deneysel İncelenmesi
(TMMOB MAKİNA MÜHENDİSLERİ ODASI, 2019)Soğutma sistemlerinde kullanılan kloro-floro hidrokarbonların çevreye ve ozona zararlı olmalarından dolayı daha çevreci ve doğal soğutucu akışkanların bu bileşiklerle değiştirilmesi zorunlu hale gelmiştir. Doğal soğutucu ... -
Comparative Cost Assessment of Cold Storage Plants and Natural Storage Structures for Potato
(Springer, 2020)The use of a cold storage plant for reducing perishable food losses is insufficient in developing and underdeveloped countries because of required infrastructure and investments. For this reason, many producers continue ... -
Optimization of the finned double-pipe heat exchanger using nanofluids as working fluids
(Springer, 2020)The heat exchanger pipe diameter has a significant effect on the flow characteristics as well as on the initial investment, operation and overall cost. Increasing fin dimensions increases the annulus hydraulic diameters. ... -
Experimental investigation of PCM location in a commercial display cabinet cooled by a transcritical CO2 system
(Elsevier, 2020)In this study, the influence of phase change material (PCM) location in a closed display cabinet cooled by a transcritical CO2 refrigeration system was examined experimentally. Two configurations have been investigated ... -
Computational fluid dynamics modeling of surface condensation
(Springer, 2020)This study experimentally and numerically investigates the condensation problem, which is one of the most important problems in chilled ceiling application. In a wide range of applications, including air-conditioning, ...
