Yayın tarihi için Makine Mühendisliği Bölümü Koleksiyonu listeleme
Toplam kayıt 56, listelenen: 21-40
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Kapalı Kare Ortamlarda Periyodik Olarak Değişen Sıcaklığa Sahip Duvara Konulan Engelin Doğal Taşınım ile Isı Transferi Üzerine Etkilerinin Sayısal İncelenmesi
(6th International Advanced Technologies Symposium, 2011-05-16)Natural convection heat transfer in square enclosures having a horizontally positioned obstacle on one of the vertical wall is numerically investigated. The obstacle included wall has periodically varying temperature profile ... -
Exergetic Evaluation of Speed and Load Effects in Spark Ignition Engines
(Edp Sciences S A, 2012)Exergetic Evaluation of Speed and Load Effects in Spark Ignition Engines This study investigates the effects of various operating conditions in spark ignition engines via an exergy analysis. A thermodynamic cycle model ... -
Dietil eter-motorin karışımlarının motor performansına etkilerinin deneysel incelenmesi
(Gazi Üniversitesi Mühendislik Mimarlık Fakültesi Dergisi, 2012)Bu çalışmada, dietil eter (DEE)-motorin karışımlarının motor performansına etkileri deneysel olarak incelenmiştir. Yakıt karışımları motorin içerisine hacimsel olarak %2,5, %5, %7,5 ve %10 oranlarında dietil eter karıştırılarak ... -
Effects of charge properties on exergy balance in spark ignition engines
(Elsevier Sci Ltd, 2013)This study investigates the effects of the air-fuel mixture (charge) properties on the exergy balance in spark ignition engines. A thermodynamic cycle model including compression, combustion and expansion processes is used. ... -
COMPARATIVE INVESTIGATION THE USE OF METHANOL AND METHYL TERTIARY BUTYL ETHER IN GASOLINE ON ENGINE PERFORMANCE, CO EMISSIONS AND FUEL COST
(Turkish Soc Thermal Sciences Technology, 2013)This study is concerned with investigating experimentally the effects of methanol and Methyl tert-Butyl Ether (MTBE) blending to base gasoline on the performance CO emissions and fuel cost of a spark ignition (SI) engine. ... -
TUĞLA İÇ GEOMETRİSİNİN ISI TRANSFERİ ÜZERİNE ETKİSİNİN İNCELENMESİ
(11. ULUSAL TESİSAT MÜHENDİSLİĞİ KONGRESİ TESKON2013, 2013-04-17)Tuğla, çok eski zamanlardan beri binalarda yapı malzemesi olarak kullanılmaktadır. Dış ortamla yaşam alanlarını birbirinden ayıran tuğla, ısı transferi açısından da önemli bir özelliğe sahiptir. Gelişen teknolojiye ve ... -
ÜÇGEN KAPALI ORTAMDA DÜŞEY YÜZEYE YERLEŞTİRİLEN ENGEL EĞİMİNİN DOĞAL TAŞINIMLA ISI TRANSFERİ ÜZERİNE ETKİSİNİN SAYISAL OLARAK İNCELENMESİ
(11. ULUSAL TESİSAT MÜHENDİSLİĞİ KONGRESİ TESKON2013, 2013-04-17)Bu çalışmada, yalıtılmış düşey yüzeyine engel yerleştirilen üçgen şeklindeki çatı içerisinde doğal taşınımla ısı transferi sayısal olarak incelenmiştir. Üçgen kapalı ortamın tabanı eğimli yüzeyden daha sıcak olup, düşey ... -
KÖŞE NOKTALARINA ENGEL YERLEŞTİRİLEN KARE KAPALI ORTAMDA DOĞAL TAŞINIMLA ISI TRANSFERİ
(19. Ulusal Isı Bilimi ve Tekniği Kongresi, ULIBTK'13, 2013-09-09)Bu çalışmada, köşe noktalarına engel yerleştirilen kare şeklindeki kapalı ortamda doğal taşınımla ısı transferi sayısal olarak incelenmiştir. Kare şeklindeki kapalı ortamın düşey yüzeyleri farklı sıcaklıklarda tutulurken ... -
Effects of discretization schemes on numerical results of natural convection heat transfer
(Amer Inst Physics, 2014)Two dimensional natural convection heat transfer in a square enclosure is numerically analyzed. Laminar natural-convection heat transfer is studied by solving the Navier-Stokes and energy equations using finite volume ... -
Exergetic Analysis of Using Gaseous Fuels in Spark Ignition Engines
(Journal of Thermophysics and Heat Transfer (The American Institute of Aeronautics and Astronautics), 2014)This paper aims to investigate the use of alternative gaseous fuels in spark ignition engines via an exergy analysis.A quasi-dimensional two-zone thermodynamic cycle model is used for this purpose. The intake and exhaust ... -
Preparation and characterization of electroless Ni–B/nano-SiO2, Al2O3, TiO2 and CuO composite coatings
(2015-06-18)Ni–B/SiO2, Al2O3, TiO2 and CuO composite coatings were successfully obtained by the electroless plating technique. Dispersible SiO2, Al2O3, TiO2 and CuO nanoparticles were co-deposited with electroless Ni–B coating onto ... -
Microindentation on the porous copper surface modulations
(Springer, 2017)This study aimed to investigate the mechanical properties of a surface modulation which was realized through compaction, and then sintering of copper powders. To this goal, Berkovich type of indenter and depth-sensing ... -
Effect of Quench-Ageing on Microstructural Evolution and Damping Behaviour of Zn-27Al-1Cu Alloy
(ISLAC’18 “1st International Symposium on Light Alloys and Composite Materials", 2018-03-22)A ternary Zn-27Al-1Cu alloy was prepared by permanent mould casting. The microstructural evolution and damping behaviour of the Zn-27Al-1Cu alloy were investigated in different periods of ageing after subjected to solution ... -
Optimum Tuning of a Gyroscopic Vibration Absorber for Vibration Control of a Vertical Cantilever Beam with Tip Mass
(Int Inst Acoustics & Vibration, 2019)In this paper, a symmetric gyro with coupling to the tip mass of a beam mounted on a vibrating base is considered. Taking advantage of the angular momentum of the rotating gyroscope, gyrostabilizer systems are expected to ... -
Optimization insulation thickness and reduction of CO2 emissions for pipes in all generation district heating networks
(SAGE PUBLICATIONS LTD, 2022)District heating systems are provided solutions for the increasing energy problems in high-population cities. Energy costs go up depending on increasing heat loss in DHS's distribution network. Heat loss from the network ... -
Investigation of biodegradability of doped composite oxide coated AZ91 alloy in blood plasma
(Gazi University, 2022)Magnesium alloys; It is widely used in metallic biomaterials with its low toxic effect and biodegradability. Although these alloys help the formation of new tissues in the body, they provide great advantages over other ... -
Effect of Working Conditions on the Lubricated Wear Behavior of Zn-40Al-2Cu-2Si Alloy in the As-Cast and T6 Heat-Treated States
(ASME, 2022)In order to determine the effect of working conditions on the lubricated wear behavior of Zn-40Al-2Cu-2Si alloy in the as-cast and T6 heat-treated states, its tribological properties were studied at different oil flowrates, ... -
Angular Momentum Control for Preventing Rollover of a Heavy Vehicle
(Society of Automotive Engineers Turkey, 2022)In this article, gyroscopes and flywheels are used to prevent the rollover of a vehicle due to external forces. The rollover preventing performance of the flywheels for a heavy trailer (an inverted pendulum problem) is ... -
Effect of Working Conditions on the Lubricated Wear Behavior of Zn-40Al-2Cu-2Si Alloy in the As- Cast and T6 Heat-Treated States
(American Society of Mechanical Engineers (ASME), 2022)In order to determine the effect of working conditions on the lubricated wear behavior of Zn-40Al-2Cu-2Si alloy in the as-cast and T6 heat-treated states, its tribological properties were studied at different oil flowrates, ... -
ENERGY, EXERGY ANALYSIS AND OPTIMIZATION OF INSULATION THICKNESS ON BUILDINGS IN A LOW-TEMPERATURE DISTRICT HEATING SYSTEM
(YILDIZ TECHNICAL UNIV, 2023)In the study, energy and exergy analysis of the buildings on a campus in Turkey are conducted by using actual operating data and taking measurements in the district heating system as a case study. The energy and exergy ...