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Umit O. Koylu
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Proceedings Papers

Influence of Ignition Timing and EGR on the NOx Emission and the Performance of an SI Engine Fueled With Hydrogen

Hassan A. Khairallah, Warren S. Vaz, Umit O. Koylu
Proc. ASME. IMECE2015, Volume 6A: Energy, V06AT07A060, November 13–19, 2015
Paper No: IMECE2015-52761
DOI: https://doi.org/10.1115/IMECE2015-52761
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Topics: Emissions, Exhaust gas recirculation, Hydrogen, Ignition, Nitrogen oxides, Spark-ignition engine, Engines, Oxidation, Carbon, Chemical reactions
Journal Articles

Experimental and Computational Evaluation of Performance and Water Management Characteristics of a Bio-Inspired Proton Exchange Membrane Fuel Cell

Bhaskar P. Saripella, Umit O. Koylu, Ming C. Leu
Journal: Journal of Electrochemical Energy Conversion and Storage
Article Type: Research-Article
J. Electrochem. En. Conv. Stor. December 2015, 12(6): 061007.
Paper No: FC-15-1002
DOI: https://doi.org/10.1115/1.4032041
Published Online: December 15, 2015
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Topics: Biomimetics, Design, Flow (Dynamics), Fuel cells, Gas diffusion layers, Proton exchange membrane fuel cells, Water, Water resource management, Pressure, Simulation
Proceedings Papers

A Computational Study of In-Cylinder NO x Reduction Strategies for a Compression-Ignition Engine Fueled With Diesel/Hydrogen Mixtures

Hassan A. Khairallah, Umit O. Koylu
Proc. ASME. ES2015, Volume 1: Advances in Solar Buildings and Conservation; Climate Control and the Environment; Alternate Fuels and Infrastructure; ARPA-E; Combined Energy Cycles, CHP, CCHP, and Smart Grids; Concentrating Solar Power; Economic, Environmental, and Policy Aspects of Alternate Energy; Geothermal Energy, Harvesting, Ocean Energy and Other Emerging Technologies; Hydrogen Energy Technologies; Low/Zero Emission Power Plants and Carbon Sequestration; Micro and Nano Technology Applications and Materials, V001T08A001, June 28–July 2, 2015
Paper No: ES2015-49098
DOI: https://doi.org/10.1115/ES2015-49098
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Topics: Cylinders, Diesel, Diesel engines, Hydrogen, Nitrogen oxides, Emissions, Exhaust gas recirculation, Carbon dioxide, Fuels, Chemical kinetics
Proceedings Papers

Finding an Optimal Driving Strategy for an Electric Bus Based on Operational Data

Warren Vaz, Arup K. Nandi, Umit O. Koylu
Proc. ASME. ES2015, Volume 2: Photovoltaics; Renewable-Non-Renewable Hybrid Power System; Smart Grid, Micro-Grid Concepts; Energy Storage; Solar Chemistry; Solar Heating and Cooling; Sustainable Cities and Communities, Transportation; Symposium on Integrated/Sustainable Building Equipment and Systems; Thermofluid Analysis of Energy Systems Including Exergy and Thermoeconomics; Wind Energy Systems and Technologies, V002T16A001, June 28–July 2, 2015
Paper No: ES2015-49089
DOI: https://doi.org/10.1115/ES2015-49089
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Topics: Batteries, Electric motors, Electric vehicles, Energy consumption, Energy efficiency, Energy management, Renewable energy, Roads, Tradeoffs
Proceedings Papers

Comparisons of Performances and Liquid Water Distributions Within Bio-Inspired and Single-Serpentine PEM Fuel Cell Channels

Bhaskar P. Saripella, Umit O. Koylu, Ming C. Leu
Proc. ASME. FUELCELL2015, ASME 2015 13th International Conference on Fuel Cell Science, Engineering and Technology, V001T06A001, June 28–July 2, 2015
Paper No: FUELCELL2015-49099
DOI: https://doi.org/10.1115/FUELCELL2015-49099
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Topics: Biomimetics, Proton exchange membrane fuel cells, Water, Design, Flow (Dynamics), Fuel cells, Proton exchange membranes, Copper, Fuel cell technology, Gases
Proceedings Papers

Three-Dimensional CFD Modeling of Tubular Solid Oxide Fuel Cells With Different Fuels

Sachin L. Puthran, Umit O. Koylu, Serhat Hosder, Fatih Dogan
Proc. ASME. FUELCELL2011, ASME 2011 9th International Conference on Fuel Cell Science, Engineering and Technology, 465-473, August 7–10, 2011
Paper No: FuelCell2011-54761
DOI: https://doi.org/10.1115/FuelCell2011-54761
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Topics: Computational fluid dynamics, Fuels, Modeling, Solid oxide fuel cells, Temperature, Electrolytes, Hydrogen, Methane, Carbon, Computer simulation
Proceedings Papers

A Computational Study on Performance, Combustion and Emissions Characteristics of a Hydrogen-Fueled Internal Combustion Engine

Shravan K. Vudumu, Umit O. Koylu
Proc. ASME. IMECE2009, Volume 3: Combustion Science and Engineering, 9-15, November 13–19, 2009
Paper No: IMECE2009-11183
DOI: https://doi.org/10.1115/IMECE2009-11183
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Topics: Combustion, Emissions, Hydrogen fuels, Internal combustion engines, Engines, Hydrogen, Fuels, Gasoline, Nitrogen oxides, Engineering simulation
Proceedings Papers

Development and Integration of Engine Simulation Projects Into the Mechanical Engineering Curriculum at Missouri S&T

Shravan K. Vudumu, Umit O. Koylu
Proc. ASME. IMECE2009, Volume 7: Engineering Education and Professional Development, 341-347, November 13–19, 2009
Paper No: IMECE2009-10540
DOI: https://doi.org/10.1115/IMECE2009-10540
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Topics: Engines, Mechanical engineering, Simulation, Combustion, Computer software, Students, Bridges (Structures), Design, Emissions, Engineering education
Proceedings Papers

An Experimental Investigation of Soot Formation During Nonpremixed Turbulent Combustion of Hydrocarbon Fuels

Bo Yang, Umit O. Koylu
Proc. ASME. IMECE2002, Heat Transfer, Volume 3, 7-10, November 17–22, 2002
Paper No: IMECE2002-33973
DOI: https://doi.org/10.1115/IMECE2002-33973
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Topics: Combustion, Fuels, Soot, Turbulence, Flames, Atmospheric pressure, Combustion systems, Electromagnetic scattering, Emissions, Gaseous fuels