Simulation of atmospheric fluidized bed combustors including in-situ desulfurization

Oymak, Olcay


Simulation of fluidized bed combustors
Değirmenci, Engin; Selçuk, Nevin; Department of Chemical Engineering (1994)
Simulation of circulating fluidized bed combustors
Göğebakan, Yusuf; Selçuk, Nevin; Department of Chemical Engineering (2006)
A dynamic mathematical model for simulation of atmospheric circulating fluidized bed combustors has been developed on the basis of first principles and empirical correlations. The model accounts for dense and dilute zone hydrodynamics, volatiles release and combustion, char particles combustion and their size distribution, and heat transfer from/to gas, particles, waterwalls and refractory. Inputs to the model include configuration and dimensions of the combustor and its internals, air and coal flows, coal ...
Simulation of Rapidly Maneuvering Airfoils with Synthetic Jet Actuators
Jee, SolKeun; Lopez Mejia, Omar D.; Moser, Robert D.; Muse, Jonathan A.; Kutay, Ali Türker; Calise, Anthony J. (American Institute of Aeronautics and Astronautics (AIAA), 2013-08-01)
Synthetic jet actuators are investigated for rapidly maneuvering airfoils that are regulated by a closed-loop control system. To support active flow-control simulations performed here, the closed-loop system and vehicle dynamics are coupled with computational fluid dynamics. High-frequency sinusoidal pitching simulations with and without synthetic jet actuation indicate that the current synthetic jet actuators provide bidirectional change in aerodynamic forces during rapid maneuvers whose time scales are of...
Simulation of geothermal reservoirs with high amount of carbon dioxide
Küçük, Serhat; Akın, Serhat; Department of Petroleum and Natural Gas Engineering (2018)
Geothermal energy is always attributed as a sustainable and environmentally friendly source of energy. But in some cases, amount of the greenhouse gas emissions from geothermal fields become a big issue. Kızıldere Geothermal Field, one of the most important and large scale geothermal fields of the world, is a subject of these issues, experiencing excess amount of CO2 production rates and a rapid decline in the reservoir pressures. This study aims to construct a numerical model of the Kızıldere Geothermal Fi...
VURUSKAN, Ilker; Sert, Cüneyt; Ozer, Mehmet Bulent (2014-06-27)
In the last decade, there is a renewed interest in the integration of a sloshing tank into structural systems to decrease the vibrations of the structure. The purpose of this study is to try different numerical simulation programs for further use in studies in evaluation of the effectiveness of the sloshing tank absorbers for structural systems. The programs chosen for sloshing simulations are COMSOL Multiphysics, ANSYS CFX and ANSYS-FLUENT. In the numerical simulations, the free surface shape during sloshi...
Citation Formats
O. Oymak, “Simulation of atmospheric fluidized bed combustors including in-situ desulfurization,” Middle East Technical University, 1991.