Kurum Yazarı "Çelik, Ahmet Ozan" Makale Koleksiyonu İçin Listeleme
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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 ... -
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 ... -
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 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 ...