Fen Bilimleri Enstitüsü: Recent submissions

  • Heat transfer and flow behavior of carbon based nanofluids 
    Demirkır, Çayan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Thermal and rheological behaviors of the graphene-water nano uids are investigated experimentally. Nano uids with particle mass fraction from 0.025 to 2.0% are prepared by using PVP as surface active material and ...
  • Design of a passive self-tuning lever-type vibration isolation system 
    Özyar, Ahmet Onur. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    In this study, a novel self-tuning passive lever-type vibration isolation system for base excitations is described. Due to inertial coupling within the vibration isolation system, an antiresonance frequency is generated, ...
  • Fast NOx prediction methodology via 1D thermodynamical tools 
    Özgül, Emre. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Accurate modelling of Nitrogen Oxide, soot, CO and UHC emissions from diesel engines plays a crucial role during the development phases of powertrain systems due to increasingly more strict emission legislation. Undoubtedly, ...
  • Design of a highly-extensible pneumatic actuator for soft robotic applications 
    Baydere, Bora Alp. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Soft continuum robots have been an expanding research topic due to their in herent compliance and flexibility. However, most of the conventional continuum robots still lack the ability to significantly change size and length. ...
  • Finite element analysis of flow between two finite coaxial rotating disks 
    Benim, Ali Cemal. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1981., 1981.)
    In this study, the steady and incompressible flow between rotating,coaxial, finite disks is solved by the Finite Element Method. In the analysis velocity and pressure formulation is used. An iterative procedure which permits ...
  • Effect of loading rate and thermomechanical coupling on fracture of shape memory alloys 
    Özbaş, İsmail Yiğit. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    This work is on the investigation of the effect of loading rate and thermomechan ical coupling on mechanical behavior and fracture of shape memory alloys (SMA). The constitutive model of Zaki and Moumni (ZM) is studied in ...
  • Effect of air flow, water spray and nozzle injection characteristic on direct evaporative cooling 
    Shafiei, Hamed. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Evaporative cooling occurs through evaporation of water droplets in air. It works on the principle of injecting water spray directly into the air flow to reduce its temperature by a conversion of sensible heat of the air ...
  • Design and implementation of a parabolic trough collector system 
    Bilgin, Egemen Orhan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    With the effect of global warming on weather, most countries are interested in renewable energy sources and solar energy is the most promising one among others with an endless source. With this awareness, a lab scale test ...
  • Thermodynamic modelling and experimental validation of a laboratory scale ORC scroll expander 
    Ogan, Doruk Can. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    The detailed geometrical and thermodynamic modelling and experimental vali dation of scroll expander is presented in this thesis. Firstly, a fully mathematical model is developed for moving and fixed scrolls inside the ...
  • Optimum design of a sandwich plate with egg-crate shaped core for maximum strength under three-point bending 
    Yalkılıç, Coşkun. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    This thesis study aims to maximize the bending strength of a sandwich composite plate with an egg-crate shaped core under three-point bending loading. The material is chosen as epoxy-reinforced with non-crimp E-glass fabric ...
  • Local field enhancement of different core shell nano-particles placed over a substrate under an AFM tip 
    Avşar, Dilan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Metal nanoparticles (NPs) interacting with the light in near-field undergoes lo calized surface plasmon resonance (LSPR) when the oscillating charges on the surfaces resonates with the incident light frequency. The EM wave ...
  • Numerical investigation of blood rheology and vessel elasticty effects on hemodynamics in arteries with aneurysm 
    Bilgi, Coşkun. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    The aim of this study is to provide insight to how pulsatile hemodynamics varies with rheology of blood and blood vessel elasticity in case of an abdominal aortic aneurysm (AAA). Fluid-solid interaction method with arbitrary ...
  • Modelling of unsteady processes of adsorption refrigeration systems 
    Berk, Mehmet Emre. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Energy savings on refrigeration systems are highly desired due to the aware ness of limited energy sources in recent years. In this regard, new technologies have been developed in addition to the conventional refrigeration ...
  • Thermodynamic and economic analysis of ORC with optimiation of system components 
    Bekiloğlu, Hasan Eren. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Organic Rankine cycles (ORCs) are used to generate power from low temper ature heat sources. There are two main chapters in this study. In both parts, 28 different working fluids are used for three different heat source ...
  • Control system design of a highly-extensible soft continuum robot 
    Talaş, Şeref Kemal. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    In this thesis, control system design of a highly-extensible soft robot is presented. The robot is actuated with three inflatable tubings connected to stepper motors and can move in three-dimensional space. Pressurizing the ...
  • Design of an extensible colonoscope 
    Altınsoy, Timur. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Colonoscopy is the standard medical diagnosis method used to detect abnormal ities in the colon. Early diagnosis of these abnormalities is crucial for colorectal cancer treatment to succeed. Even though colonoscopy is very ...
  • Convective heat transfer and flow performance analysis for a non-homogeneous nanofluid in a circular minichannel 
    Hokmabad, Siamak Vajdi. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    This study investigates convective laminar flow and heat transfer of alumina-water nanofluid inside a circular minichannel subjected to constant heat flux and wall temperature. The results of numerical studies on non-homogeneous ...
  • Design realization and field testing of a vertical-axis wind turbine 
    Yazgaç, Erdal. (Thesis (M.S.)- Bogazici University. Institute for Graduate Studies in Science and Engineering, 1981., 1981.)
    The purpose of this invertigation is to set up an experimental system for the field testing of the performance characteristics and practical serviceability of a vertical axis wind turbine. Based on previous research work, ...
  • Design optimization of composite I-beam wing spars with corrugated web 
    Çok, Doğan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    The main goal of this study is to develop a methodology for optimum structural design of composite I-beam wing spars with wavy corrugated web to minimize mass and investigate their mechanical behaviors under aerodynamic ...
  • Increasing the reliability of full-field DIC strain measurement by adaptive algorithms 
    Özdür, Necdet Ali. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Digital Image Correlation is now a widely used method for measuring deforma tion fields with high spatial resolution. Its single camera (two-dimensional) application is used to evaluate in-plane deformation of a planar ...

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