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Stephen Idem
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Proceedings Papers

Comparison of Biodiesel/Glycerin Separation by Gravitational Settling and Electrostatic Coagulation

Saanyol Ityokumbul Igbax, Daniel Swartling, ElSawy Ahmed, Stephen Idem
Proc. ASME. IMECE2023, Volume 5: Biomedical and Biotechnology, V005T06A066, October 29–November 2, 2023
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2023-113976
https://doi.org/10.1115/IMECE2023-113976
View Paper titled, Comparison of Biodiesel/Glycerin Separation by Gravitational Settling and Electrostatic Coagulation
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Topics: Biodiesel, Separation (Technology), Catalysts, Circuits, Electrical resistance, Fluids, Gravity (Force), Methanol, Raw materials, Stress
Proceedings Papers

Determine the Maximum Negative Operating and Collapse Pressure of Stocked Spiral Duct With and Without Corrugations

Justin Harvey, Charles D. Walker, Venkata Avinash Paruchuri, Stephen Idem
Proc. ASME. IMECE2023, Volume 11: Mechanics of Solids, Structures and Fluids, V011T12A001, October 29–November 2, 2023
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2023-112583
https://doi.org/10.1115/IMECE2023-112583
View Paper titled, Determine the Maximum Negative Operating and Collapse Pressure of Stocked Spiral Duct With and Without Corrugations
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Topics: Collapse, Ducts, Pressure, Gages, Deflection, Wall thickness, Deformation, Stiffness
Proceedings Papers

Understanding the Expected Deformation of Rectangular Ductwork

Cameron Schaff, Matthew Crispi, Jane Liu, John Peddieson, Stephen Idem
Proc. ASME. IMECE2022, Volume 4: Biomedical and Biotechnology; Design, Systems, and Complexity, V004T06A009, October 30–November 3, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2022-90097
https://doi.org/10.1115/IMECE2022-90097
View Paper titled, Understanding the Expected Deformation of Rectangular Ductwork
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Topics: Deformation, Ducts, Gages, Design, Construction, Equipment performance, Errors, Finite element analysis, Materials properties, Stress
Proceedings Papers

Non-Linear Analysis of Beam-Reinforced Thin Plates for Modeling Rectangular Duct Systems

Matthew Crispi, Jane Liu, John Peddieson, Stephen Idem
Proc. ASME. IMECE2022, Volume 4: Biomedical and Biotechnology; Design, Systems, and Complexity, V004T06A010, October 30–November 3, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2022-90109
https://doi.org/10.1115/IMECE2022-90109
View Paper titled, Non-Linear Analysis of Beam-Reinforced Thin Plates for Modeling Rectangular Duct Systems
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Topics: Ducts, Modeling, Plates (structures), Deflection, Deformation, Pressure, Finite element model, Design, Gages, Stiffness
Proceedings Papers

Improving the Yield of Biodiesel Production Using Waste Vegetable Oil Considering the Free Fatty Acid Content

Saanyol Ityokumbul Igbax, Daniel Swartling, Ahmed ElSawy, Stephen Idem
Proc. ASME. IMECE2022, Volume 6: Energy, V006T08A028, October 30–November 3, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2022-95003
https://doi.org/10.1115/IMECE2022-95003
View Paper titled, Improving the Yield of Biodiesel Production Using Waste Vegetable Oil Considering the Free Fatty Acid Content
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Topics: Biodiesel, Vegetable oils, Catalysts, Temperature, Ethanol, Methanol, Oils, Petroleum, Raw materials, Weight (Mass)
Journal Articles

A Real-Time Output–Loss Method for Monitoring Heat Rate for Coal-Fired Power Plants

Joseph M. Staller, Robert P. M. Craven, Stephen Idem, Sastry Munukutla, Keith Kirkpatrick, Dudley Benton, Susan Eisenstadt, Karsten Kopperstad, Seth Leedy, Joe McHale, Anthony Licata, Dan Andrei
Journal: ASME Open Journal of Engineering
Publisher: ASME
Article Type: Research Papers
ASME Open J. Engineering. January 2022, 1: 011045.
Paper No: AOJE-22-1069
https://doi.org/10.1115/1.4055627
Published Online: October 7, 2022
View Article titled, A Real-Time Output–Loss Method for Monitoring Heat Rate for Coal-Fired Power Plants
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Topics: Boilers, Coal, Combustion, Heat, Algorithms, Fuels, Carbon dioxide, Steam, Calibration, Carbon
Proceedings Papers

A Modified F-Factor Approach for Real-Time Performance Monitoring of Fossil Fuel Power Plants

Joseph Staller, Robert P. M. Craven, Stephen Idem, Sastry Munukutla, Keith Kirkpatrick, Dudley Benton, Susan Eisenstadt, Karsten Kopperstad, Seth Leedy, Joe McHale, Tony Licata, Dan Andrei
Proc. ASME. POWER2022, ASME 2022 Power Conference, V001T01A001, July 18–19, 2022
Publisher: American Society of Mechanical Engineers
Paper No: POWER2022-79166
https://doi.org/10.1115/POWER2022-79166
View Paper titled, A Modified F-Factor Approach for Real-Time Performance Monitoring of Fossil Fuel Power Plants
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Topics: Fossil fuel power station, Carbon dioxide, Heat, Algorithms, Combustion, Emissions, Flow (Dynamics), Environmental Protection Agency, Monitoring systems, Pressure
Journal Articles

Exploring a Variant of PTC 4-2013 for Real-Time Performance Monitoring of Fossil Fuel Power Plants

Joseph M. Staller, Robert P.M. Craven, Stephen Idem, Sastry Munukutla, Keith Kirkpatrick, Dudley Benton, Susan Eisenstadt, Karsten Kopperstad, Seth Leedy, Joe McHale, Anthony Licata, Dan Andrei
Journal: ASME Open Journal of Engineering
Publisher: ASME
Article Type: Research Papers
ASME Open J. Engineering. January 2022, 1: 011043.
Paper No: AOJE-22-1096
https://doi.org/10.1115/1.4055467
Published Online: September 26, 2022
View Article titled, Exploring a Variant of PTC 4-2013 for Real-Time Performance Monitoring of Fossil Fuel Power Plants
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Topics: Algorithms, Boilers, Calibration, Carbon, Coal, Combustion, Fuels, Heat, Water, Leakage
Proceedings Papers

Comparison of Finite Element Modeling With Measured Deflection of Spiral Flat Oval Duct

Avinash Paruchuri, Jane Liu, Stephen Idem
Proc. ASME. IMECE2021, Volume 2A: Advanced Manufacturing, V02AT02A059, November 1–5, 2021
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2021-68684
https://doi.org/10.1115/IMECE2021-68684
View Paper titled, Comparison of Finite Element Modeling With Measured Deflection of Spiral Flat Oval Duct
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Topics: Deflection, Ducts, Finite element analysis, Modeling, Deformation, Gages, Finite element model, Galvanized steel, Pressure, Shells
Proceedings Papers

Combustion Turbine Exhaust Duct, Silencer, and Stack Scale Modeling

Robert Craven, Keith Kirkpatrick, Stephen Idem
Proc. ASME. POWER2021, ASME 2021 Power Conference, V001T03A001, July 20–22, 2021
Publisher: American Society of Mechanical Engineers
Paper No: POWER2021-64118
https://doi.org/10.1115/POWER2021-64118
View Paper titled, Combustion Turbine Exhaust Duct, Silencer, and Stack Scale Modeling
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Topics: Combustion, Ducts, Exhaust systems, Modeling, Silencers, Turbines, Power stations, Pressure, Reynolds number, Turning vanes
Proceedings Papers

Pressure Loss Coefficients for VAV Terminal Units

Kiran Lankalapalli, Stephen Idem
Proc. ASME. IMECE2020, Volume 10: Fluids Engineering, V010T10A024, November 16–19, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2020-23047
https://doi.org/10.1115/IMECE2020-23047
View Paper titled, Pressure Loss Coefficients for VAV Terminal Units
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Topics: Design, Ducts, Pressure, Dampers, Databases, Fittings, Heating, Hot water, Pressure drop
Proceedings Papers

Unreinforced Flat Oval Duct Deformation Testing and Modeling

Avinash Paruchuri, Jane Liu, Stephen Idem
Proc. ASME. IMECE2020, Volume 12: Mechanics of Solids, Structures, and Fluids, V012T12A058, November 16–19, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2020-23165
https://doi.org/10.1115/IMECE2020-23165
View Paper titled, Unreinforced Flat Oval Duct Deformation Testing and Modeling
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Topics: Deflection, Deformation, Ducts, Finite element analysis, Modeling, Testing
Proceedings Papers

Performance Analysis of Multi-Pass Cross-Flow Heat Exchangers

Kiran Lankalapalli, Ahmed ElSawy, Stephen Idem
Proc. ASME. IMECE2018, Volume 8B: Heat Transfer and Thermal Engineering, V08BT10A038, November 9–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2018-87049
https://doi.org/10.1115/IMECE2018-87049
View Paper titled, Performance Analysis of Multi-Pass Cross-Flow Heat Exchangers
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Topics: Cross-flow, Heat exchangers, Flow (Dynamics), Steady state
Proceedings Papers

Feasibility Study of the Use of Ground-Coupled Condensers in Industrial Thermal Management

Ehsan M. Languri, Glenn Cunningham, Jie Cui, Stephen Idem
Proc. ASME. POWER2016, ASME 2016 Power Conference, V001T08A001, June 26–30, 2016
Publisher: American Society of Mechanical Engineers
Paper No: POWER2016-59074
https://doi.org/10.1115/POWER2016-59074
View Paper titled, Feasibility Study of the Use of Ground-Coupled Condensers in Industrial Thermal Management
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Topics: Condensers (steam plant), Thermal management, Heat, Cooling, Cooling systems, Design, Heat exchangers, Heat sinks, Pipes, Power stations
Proceedings Papers

Scale Model Testing Towards Primary Air Optimization of a CFB Boiler

Tyler Hughes, John Kang, Daniel Porter, Sastry Munukutla, Stephen Idem
Proc. ASME. POWER2013, Volume 1: Fuels and Combustion, Material Handling, Emissions; Steam Generators; Heat Exchangers and Cooling Systems; Turbines, Generators and Auxiliaries; Plant Operations and Maintenance, V001T05A003, July 29–August 1, 2013
Publisher: American Society of Mechanical Engineers
Paper No: POWER2013-98039
https://doi.org/10.1115/POWER2013-98039
View Paper titled, Scale Model Testing Towards Primary Air Optimization of a CFB Boiler
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Topics: Boilers, Optimization, Testing, Flow (Dynamics), Ducts, Air flow, Flowmeters, Accuracy and precision, Blades, Combustion
Proceedings Papers

Transient Performance of a Cross Flow Heat Exchanger Using Finite Difference Analysis

Fatir Hussain Syed, Stephen Idem
Proc. ASME. IMECE2008, Volume 10: Heat Transfer, Fluid Flows, and Thermal Systems, Parts A, B, and C, 1333-1342, October 31–November 6, 2008
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2008-66274
https://doi.org/10.1115/IMECE2008-66274
View Paper titled, Transient Performance of a Cross Flow Heat Exchanger Using Finite Difference Analysis
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Topics: Cross-flow, Heat exchangers, Transients (Dynamics), Finite difference methods, Fluids, Temperature, Transient analysis
Proceedings Papers

Flow Development in a Circular Duct With a Highly Distorted Inlet Condition

Srinivas Badam, Jie Cui, Stephen Idem
Proc. ASME. FEDSM2007, Volume 1: Symposia, Parts A and B, 1943-1950, July 30–August 2, 2007
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2007-37122
https://doi.org/10.1115/FEDSM2007-37122
View Paper titled, Flow Development in a Circular Duct With a Highly Distorted Inlet Condition
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Topics: Ducts, Flow (Dynamics), Computer simulation, Air flow, Computational fluid dynamics, Computer software, Pressure gradient, Probes, Reynolds number
Proceedings Papers

Numerical and Experimental Study of Pressure Drop Reduction in a Power Plant Stack

Murthy Lakshmiraju, Jie Cui, Stephen Idem, Sastry Munukutla
Proc. ASME. IMECE2004, Fluid Power Systems and Technology, 205-209, November 13–19, 2004
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2004-61937
https://doi.org/10.1115/IMECE2004-61937
View Paper titled, Numerical and Experimental Study of Pressure Drop Reduction in a Power Plant Stack
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Topics: Power stations, Pressure drop, Flow (Dynamics), Computational fluid dynamics, Air pollution control, Computer software, Emissions, Energy industry, Fans, Navier-Stokes equations
Proceedings Papers

CFD Studies on Burner Secondary Air Flow

Anil K. Purimetla, Jie Cui, Stephen Idem, Sastry Munukutla
Proc. ASME. IMECE2004, Pressure Vessels and Piping, 31-37, November 13–19, 2004
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2004-61914
https://doi.org/10.1115/IMECE2004-61914
View Paper titled, CFD Studies on Burner Secondary Air Flow
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Topics: Air flow, Computational fluid dynamics, Fossil fuels, Boilers, Computer software, Design, Dust, Emissions, Engineering simulation, Flow (Dynamics)