Yazar "Markal, Burak" için Makine Mühendisliği Bölümü Koleksiyonu listeleme
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The combined effects of filling ratio and inclination angle on thermal performance of a closed loop pulsating heat pipe
Markal, Burak; Aksoy, Kübra (Springer, 2021)In the present study, a series of experiments are conducted to investigate the thermal performance of a copper made pulsating heat pipe consisting of uniform flow passages with the cross section of 2 mm x 2 mm. Test ... -
Combined influence of artificial nucleation site and expanding cross section on flow boiling performance of micro pin fins
Markal, Burak; Kul, Beyzanur (Elsevier, 2022)Present paper experimentally studies combined influence of artificial nucleation sites and expanding cross section on saturated flow boiling performance of heat sinks with micro pin fins. Thermal and visualization-based ... -
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 ... -
Düşük dolum oranında ikili karışımlarla yüklü üniform olmayan atımlı ısı borusunun deneysel incelenmesi
Markal, Burak; Varol, Ramazan (Düzce Üniversitesi, 2021)Bu çalışmada, düşük bir dolum oranında ikili karışımlarla yüklü, üniform olmayan kanal profiline sahip düz plakalı kapalı döngülü atımlı bir ısı borusunun ısıl performansı ve akış davranışı deneysel olarak incelenmiştir ... -
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 gradually expanding flow passages on flow boiling of micro pin fin heat sinks
Markal, Burak; Kul, Beyzanur; Avcı, Mete; Varol, Ramazan (Elsevier, 2022)In this paper, effect of gradually expanding flow passages on saturated flow boiling characteristics of micro pin fin heat sinks is experimentally investigated. In this regard, a comparative analysis is performed based on ... -
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 ... -
The effect of Total flowrate on the cooling performance of swirling coaxial impinging jets
Markal, Burak (Springer, 2019)Thermal management ability of swirling coaxial confined impinging air jets (SCCIAJ) are experimentally studied for different total flowrate. the coaxial structure of the jet is provided by a nozzle which is a cylindrical ... -
Experimental investigation and a new predictive tool for thermal performance of pulsating heat pipes
Markal, Burak; Varol, Ramazan (Springer, 2023)In the present study, binary-fluid-charged uniform and nonuniform flat plate closed loop pulsating heat pipes (FP-CLPHP) are experimentally investigated in comparative manner, and a novel correlation with innovative point ... -
Experimental investigation and force analysis of flat-plate type pulsating heat pipes having ternary mixtures
Markal, Burak; Varol, Ramazan (Pergamon-Elsevier Science Ltd., 2021)Comprehensive experiments are conducted to analyze complex heat transfer characteristics and flow nature of a flat plate closed loop pulsating heat pipe charged with ternary mixtures. Consecutive channels of the heat pipe ... -
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 investigation of heat transfer characteristics and wall pressure distribution of swirling coaxial confined impinging air jets
Markal, Burak (Pergamon-Elsevier Science Ltd, 2018)In the present study, swirling coaxial confined impinging turbulent air jets issuing from a novel designed nozzle is studied experimentally. Heat transfer characteristics and pressure distribution on the impingement plate ... -
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 ... -
Influence of downstream cross-sectional area ratio on flow boiling characteristics of expanding micro pin fin heat sinks
Markal, Burak; Kul, Beyzanur (Elsevier, 2023)In the present study, influence of downstream cross-sectional area ratio on flow boiling behavior of expanding micro-pin-fin heat sinks was experimentally studied. Three structured micro-pin-fin heat sinks, namely, Type1, ... -
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 ...