Yazar "Çelik, Ahmet Ozan" için listeleme
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3D CFD model of a V-notch weir
Kiricci, V.; Çelik, Ahmet Ozan; Kizilaslan, M. A.; Demirel, Etli Pınar (Crc Press-Taylor & Francis Group, 2016)CFD-Computational Fluid Dynamics models provide comprehensive information about the fluid flow around water structures. A CFD solution allows obtaining almost all of the flow parameters for any desired time interval and ... -
3D modeling of a river type dam fish passage by CFD
Kiricci, V.; Çelik, Ahmet Ozan (CRC Press/Balkema, 2016)Computational Fluid Dynamics (CFD) models provide comprehensive information about the fluid flow around water structures. This paper discusses the CFD solution of a pool type fish passage model and evaluate the results in ... -
Accounting for the role of turbulent flow on particle dislodgement via a coupled quadrant analysis of velocity and pressure sequences
Shih, WuRong; Diplas, Panayiotis; Çelik, Ahmet Ozan; Dancey, Clinton (Elsevier Sci LTD, 2017)Recent studies have demonstrated the importance of duration, in addition to magnitude, of energetic turbulent events on particle dislodgement under threshold of motion conditions. It is therefore proposed here that the use ... -
Aerodynamic analysis and improvements of a solar car
Kiricci, V.; Çelik, Ahmet Ozan; Insel, C.; Güner, E. (Crc Press-Taylor & Francis Group, 2017)In this study, aerodynamic performance of a solar car (Anadolu Solar Team) is investigated using Computational Fluid Dynamics (CFD). This work represents the current efforts in designing a new vehicle. Aerodynamic concepts ... -
CFD simulations of self-compacting concrete with discrete phase modeling
Karakurt, Cenk; Çelik, Ahmet Ozan; Yılmazer, Cem; Kiricci, Volkan; Ozyasar, Ethem (Elsevier Sci LTD, 2018)Self-compacting concrete (SCC), is a special type of concrete with high compaction ability in the form-work with its own weight and compacted without any vibration. The main important advantage of SCC is the stability of ... -
Determination of Concrete Strength By Using Small Diameter Cores and Microcores
Kılınç, Kadir; Çelik, Ahmet Ozan; Tuncan, Mustafa; Tuncan, Ahmet; Arıöz, Ömer (Novpress Sro, 2011)Strength of concrete is an important property for the quality of concrete. Compression testing of cores drilled from hardened concrete is a widely accepted method of strength determination. Estimation of concrete strength ... -
Distributions of Compressive Strength Obtained from Various Diameter Cores
Çelik, Ahmet Ozan; Kılınç, Kadir; Tuncan, Mustafa; Tuncan, Ahmet (Amer Concrete Inst, 2012)Test results from cores with diameters smaller than the standard sizes and with length-to-diameter (Vd) ratios less than I are considered to be unreliable due to higher variability in concrete strength. There is, however, ... -
Examination of changes in the Turkish hydropower development, regulation, and planning
Çelik, Ahmet Ozan; Kiricci, Volkan (SAGE Publications LTD, 2016)Hydropower has a critical role in supplying the energy demand and sustaining the economic and industrial growth in Turkey. Over the past decade, several policy changes have been made to improve the contribution of hydropower ... -
Instantaneous pressure measurements on a spherical grain under threshold flow conditions
Çelik, Ahmet Ozan; Diplas, P.; Dancey, C. L. (Cambridge University Press, 2014)The aim of this investigation was to experimentally examine the surface pressures and resulting forces on an individual sediment grain whose size is comparable to the scales of the turbulent channel flow in an effort to ... -
Instantaneous turbulent forces and impulse on a rough bed: Implications for initiation of bed material movement
Çelik, Ahmet Ozan; Diplas, Panayiotis; Dancey, Clint L. (Amer Geophysical Union, 2013)The overall objective of this study is to identify the physical mechanisms responsible for the entrainment of an exposed particle subject to rapidly fluctuating hydrodynamic forces in the case of channel flow with a fully ... -
Investigation of the structured packing surface textures influence on CO2 absorption using openfoam
Prasad Thummala, Phanindra (Anadolu Üniversitesi, 2018)Bu tezin amacı, OpenFOAM'ı (açık kaynaklı Hesaplamalı Akışkanlar dinamiği (HAD) yazılımı) etkin bir şekilde kullanarak, yapılandırılmış dolgu yüzeyinin CO2 absorbsiyonu üzerindeki etkisini incelemek ve yeni yüzey dokusu ... -
Investigation of wind loads on the Osmangazi Bridge with numerical modeling
Çelik, Ahmet Ozan; Kiricci, Volkan (Pamukkale University, 2018)Wind loads are crucial dynamic load for various structures. It is a unique engineering problem particularly because it requires the combined expertise of transportation, structure and fluid mechanics engineers. With the ... -
Nonintrusive Method for Detecting Particle Movement Characteristics near Threshold Flow Conditions
Diplas, P.; Çelik, Ahmet Ozan; Dancey, C. L.; Valyrakis, M. (Asce-Amer Soc Civil Engineers, 2010)Bed-load measurements comprise an important component in the development of reliable formulas, in an effort to obtain the necessary constitutive relations between the amount of transported material and flow parameters. The ... -
Reassessment of the flood damage at a river diversion hydropower plant site: lessons learned from a case study
Çelik, Ahmet Ozan; Kiricci, Volkan; Insel, Canberk (Springer, 2017)Despite the accumulated vast theoretical and practical knowledge on the flood-related topics, the lack of precautions taken against the natural disasters keeps causing fatality and property damage. In this study, a recent ... -
Statistical distributions of in situ microcore concrete strength
Kılınç, Kadir; Çelik, Ahmet Ozan; Tuncan, Mustafa; Tuncan, Ahmet; Arslan, Gökhan; Arıöz, Ömer (Elsevier Sci LTD, 2012)Quality control processes require accurate knowledge of in situ compressive strength of concrete. The most widely accepted method of determining the compressive strength of concrete in existing structures is to test core ... -
Utilisation of Fly Ash in Geobricks Produced By Pressure Forming Process
Arıöz, Ömer; Kılınç, Kadir; Çelik, Ahmet Ozan; Tuncan, Mustafa; Tuncan, Ahmet; Kavas, Taner; Weil, Marcel (Novpress Sro, 2011)In this experimental investigation, various geobricks were produced from F and C-type fly ash. A combination of sodium hydroxide (NaOH) and sodium silicate solution was used as alkaline activator. The fly ash based geobricks ...
