Yazar "Akkaya, Volkan Ramazan" için listeleme
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COMPARATIVE THERMAL AND FLOW ANALYSES OF TWO DIFFERENT PLATE PATTERNS FOR A COMPACT PLATE HEAT EXCHANGER
Gürel, Barış; Keçebaş, Ali; Akkaya, Volkan Ramazan; Göltaş, Merve; Kurtuluş, Karani; Güler, Onur Vahip (Knowledge Center on Organic Rankine Cycle Technology (KCORC), 2022)It is known that the most significant difference of plate heat exchangers (PHEs) from other heat exchangers (HEs) is their heat transfer efficiency. The thinness of the plates separating the two fluids compared to the other ... -
Event-Driven Molecular Dynamics Simulation of Hard-Sphere Gas Flows in Microchannels
Akkaya, Volkan Ramazan; Kandemir, İlyas (Hindawi Ltd, 2015)Classical solution of Navier-Stokes equations with nonslip boundary condition leads to inaccurate predictions of flow characteristics of rarefied gases confined in micro/nanochannels. Therefore, molecular interaction based ... -
Improvement of thermo-hydraulic performance with plate surface geometry for a compact plate heat exchanger manufactured by additive manufacturing
Göltaş, Merve; Gürel, Barış; Keçebaş, Ali; Akkaya, Volkan Ramazan; Güler, Onur Vahip (PERGAMON-ELSEVIER SCIENCE LTD, 2022)Today, compact PHEs produced by additive manufacturing method have emerged when high heat transfer and low-pressure drop are required from PHEs under high temperature and pressure operating conditions. This has resulted ... -
An Investigation of Transition Flow in Porous Media by Event Driven Molecular Dynamics Simulation
Koç, Mustafa; Kandemir, İlyas; Akkaya, Volkan Ramazan (ISFAHAN UNIV TECHNOLOGY, 2021)Aim of this study is to investigate the properties of mono-atomic gas flow through the porous medium by using Event-Driven Molecular Dynamics (EDMD) simulation in the transition regime. The molecules and the solid particles ... -
Investigation on flow and heat transfer of compact brazed plate heat exchanger with lung pattern
Gurel, Baris; Akkaya, Volkan Ramazan; Goltas, Merve; Şen, Çağla Nur; Güler, Onur Vahip; Koşar, Mehmet İlkay; Keçebaş, Ali (Pergamon-Elsevier Science Ltd, 2020)This study relates to an evaluation of the thermo-hydraulic performance for a state-of-the-art compact brazer plate heat exchanger (PHE) in 3 kW for 3-plates. To improve heat transfer and pressure drop of the PHE, a lung ... -
Modeling and Assessment of the Thermo-Hydraulic Performance for a Fish Gill Patterned Plate Heat Exchanger in Biomimetic Approach
Gürel, Barış; Keçebaş, Ali; Akkaya, Volkan Ramazan; Göltaş, Merve; Güler, Onur Vahip; Kurtuluş, Karani (Taylor and Francis Ltd., 2022)Increasing the surface area of the plate heat exchangers (PHEs) has recently been one of the focuses of the industry. Improved surface shapes provide greater heat transfer and also become an important key point in energy ... -
The Robustness Assessment for Event Drıven Molecular Dynamıcs By Calculatıng Speed of Sound
Event-driven molecular dynamics (EDMD) is a special application of Molecular Dynamics (MD) derived from kinetic theory of gases. While classical solution of Navier-Stokes equations fails at high Knudsen (Kn) number flows, ... -
Thermo-hydraulic efficiency of lung-inspired compact plate heat exchangers made using additive manufacturing techniques with steel, aluminum and titanium powders
Güler, Onur Vahip; Gürel, Barış; Aryanfar, Yashar; Castellanos, Humberto Garcia; Göltaş, Merve; Keçebaş, Ali; Akkaya, Volkan Ramazan (Elsevier Ltd, 2024)The selection of material for compact plate heat exchangers (CPHEs) is of increasing importance due to global economic and supply constraints. Additionally, the influence of material selection on the thermo-hydraulic ... -
Thermo-hydraulic performance improvement with nanofluids of a fish-gill-inspired plate heat exchanger
Göltaş, merve; Gürel, Barış; Keçebaş, Ali; Akkaya, Volkan Ramazan; Güler, Onur Vahip; Kurtuluş, Karani; Yağız Gürbüz, Emine (PERGAMON, 2022)The plate heat exchanger (PHE) is an important component for parameters such as size, weight, high temperature and high pressure in many nanotechnological applications. Improving the thermo-hydraulic performance of PHEs ...
