Browsing OzU Theses & Dissertations by Author "Ertunç, Özgür"
Now showing items 1-20 of 22
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3-D simulation of droplet impact on static and moving walls
Yılmaz, Anıl (2021-01-13)In the present study, the contact angle model and origin of the parasitic current have been studied to provide accurate prediction of droplet surface interactions in Volume of Fluid (VOF) framework. We investigate the ... -
Augmenting occupant thermal experience with cyber-physical-social systems : a case study on adaptive vents
Keskin, Cem (2020-06-11)Buildings use more than 30% of global energy, while 36% of this energy comes from direct combustion of fossil fuels. Hence, buildings constitute a considerable share of CO2 emissions and has a large contribution to climate ... -
Design, development, and real-life implementation of a high power quadruped robot
This thesis presents the design, development, and experimental test of a quadruped with high power-to-weight ratio. In this thesis, three design processes are studied, namely, actuator design, leg mechanism design and torso ... -
Determining thermal comfort in built environment using computational fluid dynamics simulations
Fidan, Güven (2017-06)In this thesis, three-dimensional time-dependent Thermal Comfort (TC) conditions in an occupied room is investigated and determined. The room is considered with furniture of varying materials (i.e. steel, wood, etc.) and ... -
Die-swelling phenomenon in rubber weatherstrip manufacturing under real process conditions imposed in a commercial extrusion line
Türkistanlı, Tarık (2021-06-11)The weather-strip manufacturers aim to reduce one of their main costs, trial scrap, to be competitive and to have a lower carbon foot. Annual scrap rates of sealing systems are mainly caused by extrusion dies and ... -
Effect of pH on particle agglomeration and radiative transfer in nanoparticle suspensions
Al-Gebory, Layth Wadhah Ismael (2018-08)Nanoparticle suspensions (NPSs) are solid-fluid mixtures where small dielectric or metallic particles (with sizes <100 nm) used in a base fluid. NPSs have unique and tunable thermo-optical properties, and for that reason ... -
Effect of solar radiation in office spaces
Yelekci, Ali Can (2021-06-10)This thesis examines the design components of an office that influences the thermal comfort of the occupants due to solar radiation, such as external solar shades, various window glasses, partitions between desks and floor ... -
Evaluation of bioimplants surface nano-micro design by chemical mechanical polishing against alternative methods
Al Saeedi, Riaid Hadi Salih (2019-01-11)Biomaterials comprise a representative fraction of the products used in the health area. Biomedical devices (such as biosensors, blood circulation tubes, hemodialysis systems) can be cited as examples. Biomaterials can be ... -
Experimental and numerical investigation of rubber whether strip extrusion
Talib, Nayyef Ahmed (2019-01-03)Extrusion is the main method used to produce rubber weather strips in automotive industries. The product quality is dependent on many factors, which include the design parameters of the die, the processing variables, and ... -
Experimental and numerical investigations on compact plate heat exchanger
Peçenek, Erdem (2019-08-15)The objective of this thesis was to understand ow phenomena inside chevron type plate heat exchangers. To reach this goal, several visualization experiments designed and conducted. Also Large eddy ow simulations were ... -
Experimental investigation of droplet impact on moving surfaces
Kayansalçık, Gökhan (2018-01)Droplet impact on moving surfaces has been studied experimentally by using high-speed photography technique. Fluid properties (droplet diameter and velocity), surface properties (wettability and roughness) and surface ... -
An investigation into hydrophobic micro-textured surfaces on heat transfer and surface wetting phenomenon during vapor condensation
Salem, Thamer Khalif (2018-12-28)Efficiency and performance of a system that involves condensation process have been one of the primary considerations over the last decades for a number of applications including thermal management systems such as vapor ... -
Investigation of corrosion in oil pipelines through surface nano-treatment
Ahmed, Mohammed Salih (2020-01)Corrosion is the unintentional and degradation of a material caused by the reaction of that material with its environment and a natural possible hazard correlated with gas and oil generation and transportation facilities. ... -
Investigation of flame characteristics in a turbulent premixed combustion
Alhumairi, Mohammed Khudhair Abbas (2018-10)In this thesis, the turbulent flame closure (TFC) model and coherent flame model (CFM) of turbulent premixed flames as steady state flow are used. In addition, large eddy simulation (LES) model as unsteady state flow is ... -
Meso-scale cooling devices experimental and numerical heat transfer analysis
Parsa, Shadi Habibi (2017-01)Various thermal management strategies and related technologies are recently developed based on the specific needs, which they are designed to fulfill. Some of these technologies are muffin fans, synthetic jets, and ... -
Modeling and optimization of chemical mechanical polishing of semiconductor materials
Chemical mechanical polishing (CMP) is a process of planarization of metal and dielectric surfaces typically in microelectronic devices manufacturing. Planarization is achieved by removing material from the wafer surface ... -
Numerical and theoretical analysis of external gear pump
İmamoğlu, Deniz (2019-01-28)External gear pumps are one of the mostly used pump types in the uid power applications due to simplicity, low cost and long operation period. However, there are some disadvantages such as internal leakages, noise and ... -
Simulations of droplet impacts on hydrophobic moving walls
Heidarifatasmi, Hosein (2017-08)Numerical simulations of water drop impact onto hydrophobic surfaces (Wax, Teflon) are carried out through usage of Eulerian multiphase model. Volume of fluid (VOF) model is used to capture the deformation of the water ... -
Structural and flow relationship of microfluidics pulsating high and low frequency jets
İkhlaq, Muhammad (2015-06)Synthetic jets are being investigated last several years. Researchers have been interested in its unique applications for a wide range of flow control to thermal management of electronics applications. Synthetic jets are ... -
Thermal and radiative energy/exergy analyses of parabolic trough collector systems
Mohammed, Hayder Noori (2018-08)The concept of exergy is used to determine the maximum energy that can be extracted from a system. It is based on both the first and the second laws of thermodynamics and allows us to determine the irreversibilities ...
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