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John R. Howell
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Journal Articles

Inverse Methods in Thermal Radiation Analysis and Experiment

Hakan Ertürk, Kyle Daun, Francis H. R. França, Shima Hajimirza, John R. Howell
Journal: ASME Journal of Heat and Mass Transfer
Article Type: Review Articles
J. Heat Mass Transfer. May 2023, 145(5): 050801.
Paper No: HT-22-1558
DOI: https://doi.org/10.1115/1.4056371
Published Online: January 12, 2023
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Topics: Design, Inverse problems, Radiation (Physics), Optimization
Proceedings Papers

Numerical Bifurcation and Chaos in a One-Dimensional Nonlinear Combined Mode Problem and the Inverse Application

Chao-Ho Lan, John R. Howell
Proc. ASME. IMECE98, Heat Transfer: Volume 5 — Numerical and Experimental Methods in Heat Transfer, 109-115, November 15–20, 1998
Paper No: IMECE1998-0727
DOI: https://doi.org/10.1115/IMECE1998-0727
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Topics: Bifurcation, Chaos, Chaos theory, Numerical analysis, Radiative heat transfer, Temperature distribution
Proceedings Papers

Inverse Radiation Heat Transfer Within Enclosures With Nonisothermal, Non-Gray Participating Media

Francis H. R. França, Masahito Oguma, John R. Howell
Proc. ASME. IMECE98, Heat Transfer: Volume 5 — Numerical and Experimental Methods in Heat Transfer, 145-151, November 15–20, 1998
Paper No: IMECE1998-0730
DOI: https://doi.org/10.1115/IMECE1998-0730
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Topics: Heat transfer, Radiation (Physics), Design, Electromagnetic scattering, Gases, Heat, Heat flux, Inverse problems, Radiation scattering, Scattering (Physics)
Proceedings Papers

Inverse Heat Source Design Combining Radiation and Conduction Heat Transfer

Francis H. R. França, Ofodike A. Ezekoye, John R. Howell
Proc. ASME. IMECE99, Heat Transfer: Volume 1, 45-52, November 14–19, 1999
Paper No: IMECE1999-0969
DOI: https://doi.org/10.1115/IMECE1999-0969
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Topics: Design, Heat, Heat conduction, Heat transfer, Radiation (Physics), Heat flux, Inverse problems, Nonlinear equations, Temperature, Thermal properties
Proceedings Papers

Transitions and Bifurcations to Chaos in Combined Radiation and Natural Convection in a Two-Dimensional Participating Medium

Chao-Ho Lan, Ofodike A. Ezekoye, John R. Howell
Proc. ASME. IMECE99, Heat Transfer: Volume 1, 53-59, November 14–19, 1999
Paper No: IMECE1999-0970
DOI: https://doi.org/10.1115/IMECE1999-0970
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Topics: Bifurcation, Chaos, Natural convection, Radiation (Physics), Flow (Dynamics), Heat conduction, Rayleigh number, Approximation, Cavities, Energy budget (Physics)
Proceedings Papers

Local Furnace Data and Modeling Comparison for a 600MWe Coal-Fired Utility Boiler

Yuh-Long Hwang, John R. Howell
Proc. ASME. IMECE99, Heat Transfer: Volume 2, 381-393, November 14–19, 1999
Paper No: IMECE1999-1050
DOI: https://doi.org/10.1115/IMECE1999-1050
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Topics: Boilers, Coal, Furnaces, Modeling, Air flow, Combustion engineering, Corners (Structural elements), Design, Elevations (Drawings), Heat flux
Proceedings Papers

Inverse Design of a Three Dimensional Furnace With Moving Design Environment

Hakan Ertürk, Ofodike A. Ezekoye, John R. Howell
Proc. ASME. IMECE2001, Heat Transfer: Volume 5 — Computational, Aerospace and Environmental Heat Transfer, 435-442, November 11–16, 2001
Paper No: IMECE2001/HTD-24327
DOI: https://doi.org/10.1115/IMECE2001/HTD-24327
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Topics: Design, Furnaces, Temperature, Temperature distribution, Annealing, Assembly lines, Conveyor belts, Errors, Fredholm integral equations, Hardening (Curing)
Proceedings Papers

Inverse Solution of Radiative Heat Transfer in Two-Dimensional Irregularly Shaped Enclosures

Hakan Ertürk, Ofodike A. Ezekoye, John R. Howell
Proc. ASME. IMECE2000, Heat Transfer: Volume 1, 109-117, November 5–10, 2000
Paper No: IMECE2000-1373
DOI: https://doi.org/10.1115/IMECE2000-1373
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Topics: Radiative heat transfer, Design, Electromagnetic scattering, Heat flux, Heat transfer, Radiation scattering, Scattering (Physics), Fredholm integral equations, Gradient methods, High temperature
Journal Articles

The Past and Future of the Monte Carlo Method in Thermal Radiation Transfer

John R. Howell, Kyle J. Daun
Journal: Journal of Heat Transfer
Article Type: Review Articles
J. Heat Transfer. October 2021, 143(10): 100801.
Paper No: HT-21-1121
DOI: https://doi.org/10.1115/1.4050719
Published Online: September 8, 2021
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Topics: Algorithms, Modeling, Monte Carlo methods, Radiative heat transfer, Simulation, Electromagnetic scattering, Absorption, Thermal radiation, Neutrons, Probability
Journal Articles

In Memoriam: Professor Ephraim Maurice Sparrow

Mohamed M. Awad, Adrian Bejan, Vijay K. Dhir, Richard J. Goldstein, Abdolhossein Haji-Sheikh, John R. Howell, Yogesh Jaluria, John R. Lloyd, Suhas V. Patankar, Terrence W. Simon, Kumar K. Tamma, Raymond Viskanta
Journal: Journal of Heat Transfer
Article Type: In Memoriam
J. Heat Transfer. April 2020, 142(4): 040101.
Paper No: HT-20-1067
DOI: https://doi.org/10.1115/1.4046310
Published Online: February 27, 2020
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Topics: Engineering teachers, Heat transfer
Journal Articles

Metamaterial Window Glass

Alex Heltzel, Tyler Mann, John R. Howell
Journal: Journal of Thermal Science and Engineering Applications
Article Type: Research-Article
J. Thermal Sci. Eng. Appl. October 2018, 10(5): 051010.
Paper No: TSEA-15-1130
DOI: https://doi.org/10.1115/1.4039921
Published Online: May 22, 2018
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Topics: Absorption, Glass, Metamaterials, Energy efficiency, Emissivity, Simulation, Finite difference time-domain analysis, Design, Solar energy
Proceedings Papers

Design and Optimization of Thermal Selective Emitters for High-Efficiency Thermophotovoltaic (TPV) Power Generation

Anil Yuksel, Alex Heltzel, John R. Howell
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, V001T10A003, June 28–July 2, 2015
Paper No: ES2015-49581
DOI: https://doi.org/10.1115/ES2015-49581
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Topics: Design, Diffraction gratings, Energy conversion, Energy gap, Energy generation, Manufacturing, Modeling, Noise (Sound), Optimization, Power converters
Journal Articles

On Multilayer Modeling of Radiative Transfer for Use With the Multisource k-Distribution Method for Inhomogeneous Media

John Tencer, John R. Howell
Journal: Journal of Heat Transfer
Article Type: Research-Article
J. Heat Transfer. June 2014, 136(6): 062703.
Paper No: HT-12-1539
DOI: https://doi.org/10.1115/1.4026554
Published Online: March 10, 2014
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Topics: Absorption, Approximation, Emissivity, Errors, Heat flux, Modeling, Temperature, Radiative heat transfer, Gases, Temperature distribution
Proceedings Papers

Metamaterial Window Glass for Adaptable Energy Efficiency

Alex Heltzel, Tyler Mann, John R. Howell
Proc. ASME. HT2013, Volume 2: Heat Transfer Enhancement for Practical Applications; Heat and Mass Transfer in Fire and Combustion; Heat Transfer in Multiphase Systems; Heat and Mass Transfer in Biotechnology, V002T04A023, July 14–19, 2013
Paper No: HT2013-17511
DOI: https://doi.org/10.1115/HT2013-17511
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Topics: Energy efficiency, Glass, Metamaterials, Emissivity, Absorption, Cold climates, Design, Engineering simulation, Green construction, Nanoscale phenomena
Proceedings Papers

A Parametric Study of the Accuracy of Several Radiative Transport Solution Methods for a Set of 2-D Benchmark Problems

John Tencer, John R. Howell
Proc. ASME. HT2013, Volume 1: Heat Transfer in Energy Systems; Thermophysical Properties; Theory and Fundamental Research in Heat Transfer, V001T01A001, July 14–19, 2013
Paper No: HT2013-17152
DOI: https://doi.org/10.1115/HT2013-17152
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Topics: Albedo, Boundary-value problems, Electromagnetic scattering, Errors, Finite element analysis, Heat transfer, Radiation (Physics), Radiation scattering, Scattering (Physics)
Proceedings Papers

Design and Verification of a PECVD Fabricated Multi-Layer Nano-Scale Photovoltaic Device

Shima Hajimirza, John R. Howell, Milo Holt, Sayan Saha, Deji Akinwande, Sanjay Banerjee
Proc. ASME. HT2013, Volume 1: Heat Transfer in Energy Systems; Thermophysical Properties; Theory and Fundamental Research in Heat Transfer, V001T01A003, July 14–19, 2013
Paper No: HT2013-17271
DOI: https://doi.org/10.1115/HT2013-17271
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Topics: Design, Nanoscale phenomena, Plasma-enhanced chemical vapor deposition, Silicon, Spectra (Spectroscopy), Thin films, Engineering simulation, Errors, Reflectance, Simulation
Proceedings Papers

Wavelet Based Nano-Texture Structures for Thin Film PV Cells

Shima Hajimirza, John R. Howell
Proc. ASME. IMECE2012, Volume 9: Micro- and Nano-Systems Engineering and Packaging, Parts A and B, 527-535, November 9–15, 2012
Paper No: IMECE2012-87045
DOI: https://doi.org/10.1115/IMECE2012-87045
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Topics: Texture (Materials), Thin films, Wavelets, Optimization, Diffraction gratings, Silicon, Strips, Absorption, Engineering simulation, Metal surfaces
Journal Articles

Statistical Analysis of Surface Nanopatterned Thin Film Solar Cells Obtained by Inverse Optimization

Shima Hajimirza, John R. Howell
Journal: Journal of Heat Transfer
Article Type: Research-Article
J. Heat Transfer. September 2013, 135(9): 091501.
Paper No: HT-12-1307
DOI: https://doi.org/10.1115/1.4024464
Published Online: July 26, 2013
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Topics: Errors, Manufacturing, Optimization, Silicon, Solar cells, Solar radiation, Thin films, Geometry, Statistical analysis, Solar energy
Proceedings Papers

On Multilayer Modeling of Radiative Transfer for Use With the Multi-Source K-Distribution Method for Inhomogeneous Media

John Tencer, John R. Howell
Proc. ASME. HT2012, Volume 1: Heat Transfer in Energy Systems; Theory and Fundamental Research; Aerospace Heat Transfer; Gas Turbine Heat Transfer; Transport Phenomena in Materials Processing and Manufacturing; Heat and Mass Transfer in Biotechnology; Environmental Heat Transfer; Visualization of Heat Transfer; Education and Future Directions in Heat Transfer, 203-211, July 8–12, 2012
Paper No: HT2012-58236
DOI: https://doi.org/10.1115/HT2012-58236
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Topics: Modeling, Radiative heat transfer, Temperature, Errors, Temperature distribution, Emissivity, Heat flux
Proceedings Papers

Limits of Light Trapping in Silicon Thin Film Cells via Metallic Gratings

Shima Hajimirza, John R. Howell
Proc. ASME. HT2012, Volume 1: Heat Transfer in Energy Systems; Theory and Fundamental Research; Aerospace Heat Transfer; Gas Turbine Heat Transfer; Transport Phenomena in Materials Processing and Manufacturing; Heat and Mass Transfer in Biotechnology; Environmental Heat Transfer; Visualization of Heat Transfer; Education and Future Directions in Heat Transfer, 233-240, July 8–12, 2012
Paper No: HT2012-58271
DOI: https://doi.org/10.1115/HT2012-58271
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Topics: Diffraction gratings, Silicon, Thin films, Optimization, Photons, Fourier series, Shapes, Simulated annealing, Solar cells, Sunlight