Yazar "Aydın, Orhan" için listeleme
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Comparative investigation of different types of expanding micro-pin-fin heat sinks at low mass flux
Markal, Burak; Kul, Beyzanur; Aydın, Orhan (Elsevier, 2023)Expansion of cross-sectional area of flow passages in micro-pin-fin heat sinks provides advantages due to suppression of bubble-confinement problem. However, low mass flux in addition to orientation of fins and existence ... -
Conical coaxial impinging air jets: angle effect on the heat transfer performance
Markal, Burak; Avcı, Mete; Aydın, Orhan (Springer, 2020)Herein, an experimental attempt is conducted to research thermal and flow behaviors of an impinging jet exiting from a coaxial type nozzle with a conical outer and a circular inner outlets. the experiments include four ... -
Effect of air change rate on particle dispersion from inlet opening under varying particle source strengths
Çetin, Yunus Emre; Avcı, Mete; Aydın, Orhan (Taylor and Francis Ltd., 2020)In this study, effect of air change rate (air change per hour–ACH) on indoor particle dispersion and deposition in a ventilated room is investigated. A reduced-scale model is designed to conduct experiments. Numerical ... -
Effect of air exhaust location on surgical site particle distribution in an operating room
Ağırman, Aleyna; Çetin, Yunus Emre; Avcı, Mete; Aydın, Orhan (Tsinghua Univ Press, 2020)This study investigates effect of exhaust outlet location on airflow and particle distribution in an operating room with laminar ventilation system (LAF) via computational fluid dynamics (CFD). Four different exhaust opening ... -
Effect of double cross sectional ratio on performance characteristics of pulsating heat pipes
Markal, Burak; Candere, Ayşe Candan; Avcı, Mete; Aydın, Orhan (Elsevier, 2021)Effect of double cross sectional ratio on performance characteristics of pulsating heat pipes is experimentally investigated. The cross sectional ratios in the evaporator and condenser sides are different from each other, ... -
Effect of fin width ratio on thermal performance of fin based-heat sink with phase change materials
Yazıcı, Mustafa Yusuf; Avcı, Mete; Aydın, Orhan; Arshad, Adeel; Jabbal, Mark (Elsevier, 2023)The rapid development of electronics, coupled with need of miniaturization in the design and manufacture, makes heat dissipation, which is critical for the performance, lifetime, and reliability of the components extremely ... -
Effect of hydraulic diameter on flow boiling in rectangular microchannels
Markal, Burak; Aydın, Orhan; Avcı, Mete (Springer, 2019)An experimental study is conducted to investigate the effect of hydraulic diameter on the saturated flow boiling characteristics of deionized water in parallel rectangular microchannels. Experiments have been performed for ... -
Effect of inlet temperature on flow boiling behavior of expanding micro-pin-fin type heat sinks
Markal, Burak; Evcimen, Alperen; Aydın, Orhan (Elsevier, 2023)Heat sinks that cool electronic systems through flow boiling are exposed to working fluids at different inlet temperature. Therefore, in the present study, influence of inlet temperature on boiling performance of a ... -
Effect of laminar airflow unit diffuser size on pathogen particle distribution in an operating room
Ağırman, Aleyna; Çetin, Yunus Emre; Avcı, Mete; Aydın, Orhan (Taylor & Francis Inc, 2020)Operating room ventilation is quite important to protect patients from infection risk inside a surgical field. the laminar flow units (LAF) used in these applications contribute to removal of pathogen particles from the ... -
Evaluation of in-duct UV-C lamp array on air disinfection: A numerical analysis
Atcı, Fatih; Çetin, Yunus Emre; Avcı, Mete; Aydın, Orhan (Taylor & Francis Inc, 2020)In-duct ultraviolet germicidal irradiation systems are effective systems that are used in disinfection of pathogenic particles transported by air that moving through the ventilation systems. Proper design of these systems ... -
Experimental investigation of coaxial impinging air jets
Markal, Burak; Aydın, Orhan (Pergamon-Elsevier Science Ltd, 2018)This study experimentally investigates hydrodynamical and thermal characteristics of coaxial confined impinging turbulent air jets. Various values of the dimensionless nozzle-to-plate distances and dimensionless flowrate ... -
Experimental investigation of flow boiling in single minichannels with low mass velocities
Markal, Burak; Candan, Ayşe; Aydın, Orhan; Avcı, Mete (Pergamon-Elsevier Science Ltd, 2018)Flow boiling characteristics in a single minichannel with the aspect ratio of 2 (1.8 mm width and 0.9 mm height) are studied experimentally. Experiments are conducted for different values of the wall heat flux (in the range ... -
Experimental study of single-phase fluid flow and heat transfer characteristics in rectangular microchannels
Markal, Burak; Aydın, Orhan; Avcı, Mete (2018)In this study, single-phase laminar flow of deionized water through microchannel heat sinks is investigated experimentally. Heat sinks including twenty-nine parallel rectangular channels have been used as the test samples. ... -
An experimental study on the performance of PCM-based heat sink with air for thermal regulation of PVs
Yağcı, Oğuz Kaan; Avcı, Mete; Aydın, Orhan; Markal, Burak (Elsevier, 2024)In this study, a novel parametric investigation was conducted to enhance the performance of conventional PCMbased heat sinks utilized for thermal regulation in PV panels. The proposed heat sinks in this study aimed to ... -
Flow boiling characteristics in a novel minichannel with a step on each corner
Markal, Burak; Candan, Ayşe; Aydın, Orhan (Taylor & Francis Inc, 2020)In the present study, flow boiling in a single minichannel with a longitudinal step on its each corner is studied experimentally. Bubble/flow dynamics, and thus, underlying physical phenomenon is investigated through ... -
Hava değişim katsayısının kirleticileri uzaklaştırma performansına etkisinin incelenmesi
Çetin, Yunus Emre; Avcı, Mete; Aydın, Orhan (Gazi Üniversitesi, 2021)In this study, the effect of air change rate on particle dispersion is investigated experimentally and numerically for different contaminant source positions. An experimental study is carried out on a reduced scale model ... -
Influence of ventilation strategies on dispersion and removal of fine particles: An experimental and simulation study
Çetin, Yunus Emre; Avcı, Mete; Aydın, Orhan (Taylor & Francis Inc, 2020)In this study, effect of inlet/outlet configurations on the dispersion and removal of fine particles are examined experimentally and numerically. Ten different inlet/outlet configurations are tested for three different ... -
Investigation of flat plate type pulsating heat pipes via flow visualization-assisted experiments: Effect of cross sectional ratio
Markal, Burak; Candere, Ayşe Candan; Avcı, Mete; Aydın, Orhan (Elsevier, 2021)In the present study, combined influence of filling ratio, geometry, inclination angle and heating power on heat transfer characteristics of the pulsating heat pipes (PHPs) are investigated accompanying analysis of complex ... -
Investigation of heat transfer limits for flow boiling in expanding heat sinks having micro pin fins
Markal, Burak; Evcimen, Alperen; Atcı, Fatih; Aydın, Orhan (Elsevier, 2024)Critical heat flux (CHF) represents heat transfer limit for a heat sink working under flow boiling conditions. In the literature, for the first time, in micro-pin-fin heat sinks with expanding structure, this paper ... -
Kare Kesitli Mikrokanallarda Doymuş Kaynamalı Akış Karakteristiklerinin Deneysel İncelenmesi
Markal, Burak; Aydın, Orhan; Avcı, Mete (2019)Bu çalışmada, her biri 200 ?m x 200 ?m kanal kesitine (genişlik x yükseklik) sahip yirmi dokuz paralel mikrokanaldan oluşan silikon ısı alıcıda, deiyonize suyun doymuş kaynamalı akış karakteristikleri deneysel olarak ...
