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Jeffrey S. Allen
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Journal Articles

Surface Plasmon Resonance Imaging: A Technique to Reveal the Dropwise Condensation Mechanism

Shahab Bayani Ahangar, Jeffrey S. Allen, Seong Hyuk Lee, Chang Kyoung Choi
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Photo Gallery
J. Heat Mass Transfer. March 2020, 142(3): 030903.
Paper No: HT-20-1045
https://doi.org/10.1115/1.4046136
Published Online: February 5, 2020
View Article titled, Surface Plasmon Resonance Imaging: A Technique to Reveal the Dropwise Condensation Mechanism
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Topics: Condensation, Imaging, Surface plasmon resonance, Drops, Instrumentation, Resolution (Optics), Thin films, Vapors, Bridges (Structures), Composite materials
Journal Articles

Neutron attenuation analysis of cryogenic propellants

Kishan Bellur, Daniel Hussey, David Jacobson, Jacob Lamana, Ezequiel Medici, James Hermanson, Dr. Jeffrey S. Allen, Chang Kyoung Choi
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Photo Gallery
J. Heat Mass Transfer. March 2018, 140(3): 030904.
Paper No: HT-17-1714
https://doi.org/10.1115/1.4039169
Published Online: February 16, 2018
View Article titled, Neutron attenuation analysis of cryogenic propellants
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Topics: Neutrons, Propellants, Imaging, Condensation, Density, Methane, Aluminum, Evaporation, Lubrication theory, Resolution (Optics)
Journal Articles

High Speed SPR Visualization of Frost Propagation Inside a Subcooled Water Droplet

Chan Ho Jeong, Seong Hyuk Lee, Dong Hwan Shin, Vinaykumar Konduru, Jeffrey S. Allen, Chang Kyoung Choi
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Photo Gallery
J. Heat Mass Transfer. February 2017, 139(2): 020905.
Paper No: HT-16-1717
https://doi.org/10.1115/1.4035575
Published Online: January 6, 2017
View Article titled, High Speed SPR Visualization of Frost Propagation Inside a Subcooled Water Droplet
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Topics: Drops, Subcooling, Visualization, Water, Condensed matter, Temperature, Glass, Ice, Prisms (Optics), Delays
Journal Articles

High-Speed Surface Plasmon Resonance (SPR) Reflectance Imaging of Drop Coalescence during Condensation and Evaporation

Vinaykumar Konduru, Dong Hwan Shin, Jeffrey S. Allen, Chang Kyoung Choi, Seong Hyuk Lee, Young-Ki Choi, Sosan Cheon, Kenneth D. Kihm
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Photo Gallery
J. Heat Mass Transfer. August 2016, 138(8): 080903.
Paper No: HT-16-1205
https://doi.org/10.1115/1.4033819
Published Online: July 8, 2016
View Article titled, High-Speed Surface Plasmon Resonance (SPR) Reflectance Imaging of Drop Coalescence during Condensation and Evaporation
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Topics: Condensation, Evaporation, Imaging, Reflectance, Surface plasmon resonance, Water, Microscopy, Refractive index, Resonance, Thin films
Journal Articles

Examining Liquid Hydrogen Wettability Using Neutron Imaging

Vinaykumar Konduru, Kishan Bellur, Ezequiel F. Médici, Jeffrey S. Allen, Chang Kyoung Choi, Daniel S. Hussey, David Jacobson, Juscelino B. Leão, John McQuillen, James C. Hermanson
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Photo Gallery
J. Heat Mass Transfer. August 2016, 138(8): 080901.
Paper No: HT-16-1209
https://doi.org/10.1115/1.4033822
Published Online: July 8, 2016
View Article titled, Examining Liquid Hydrogen Wettability Using Neutron Imaging
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Topics: Hydrogen, Imaging, Neutrons, Aluminum, Propellants, Vapors, Condensation, Cryogenics, Evaporation, National Institute of Standards and Technology
Proceedings Papers

Film Deposition in Non-Wetting Tubes: An Experimental Film Thickness Law

Alexandru Herescu, Jeffrey S. Allen
Proc. ASME. IMECE2015, Volume 10: Micro- and Nano-Systems Engineering and Packaging, V010T13A032, November 13–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2015-50217
https://doi.org/10.1115/IMECE2015-50217
View Paper titled, Film Deposition in Non-Wetting Tubes: An Experimental Film Thickness Law
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Topics: Film thickness, Wetting, Thin films, Dynamics (Mechanics), Hydraulic jump, Liquid films, Shock (Mechanics)
Journal Articles

Contact Angle Measurement of Liquid Hydrogen (LH 2 ) in Stainless Steel and Aluminum Cells

Kishan Bellur, Vinaykumar Konduru, Manan Kulshrestha, Daanish Tyrewala, Ezequiel Medici, Jeffrey S. Allen, Chang Kyoung Choi, Daniel S. Hussey, David C. Jacobson, Juscelino B. Leão, John McQuillen, James Hermanson, Arun Tamilarasan
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Photo Gallery
J. Heat Mass Transfer. February 2016, 138(2): 020904.
Paper No: HT-15-1701
https://doi.org/10.1115/1.4032232
Published Online: January 18, 2016
View Article titled, Contact Angle Measurement of Liquid Hydrogen (LH 2 ) in Stainless Steel and Aluminum Cells
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Topics: Aluminum, Boiling, Computational fluid dynamics, Condensation, Curve fitting, Edge detection, Engineering simulation, Evaporation, Finite element analysis, Hydrogen
Journal Articles

A rebounding droplet impacting on a static droplet

Joo Hyun Moon, Jeffrey S. Allen, Seong Hyuk Lee
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Photo Gallery
J. Heat Mass Transfer. August 2015, 137(8): 080909.
Paper No: HT-15-1255
https://doi.org/10.1115/1.4030473
Published Online: August 1, 2015
View Article titled, A rebounding droplet impacting on a static droplet
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Topics: Drops, Boiling, Condensation, Evaporation
Journal Articles

Visualization in the Contact Line Region of an Evaporating Nanofluid Drop

Dong Hwan Shin, Jeffrey S Allen, Chang Kyoung Choi, Seong Hyuk Lee
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Photo Gallery
J. Heat Mass Transfer. August 2014, 136(8): 080913.
Paper No: HT-14-1211
https://doi.org/10.1115/1.4027531
Published Online: August 1, 2014
View Article titled, Visualization in the Contact Line Region of an Evaporating Nanofluid Drop
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Topics: Evaporation, Heat, Mass transfer, Nanofluids, Visualization
Proceedings Papers

Effect of Porosity and Thermal Conductivity of a Porous Transport Layer on Saturation and Thermal Transport in a Low-Temperature Fuel Cell

Vinaykumar Konduru, Ezequiel Medici, Jeffrey S. Allen
Proc. ASME. FUELCELL2013, ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology, V001T03A005, July 14–19, 2013
Publisher: American Society of Mechanical Engineers
Paper No: FuelCell2013-18160
https://doi.org/10.1115/FuelCell2013-18160
View Paper titled, Effect of Porosity and Thermal Conductivity of a Porous Transport Layer on Saturation and Thermal Transport in a Low-Temperature Fuel Cell
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Topics: Fuel cells, Low temperature, Porosity, Thermal conductivity, Proton exchange membrane fuel cells, Water, Current density, Flow (Dynamics), Network models, Temperature
Proceedings Papers

Sensitivity of Thermal Transport and Phase-Change in Thin Porous Layers to the Distribution of the Solid Matrix

Vinaykumar Konduru, Ezequiel Medici, Jeffrey S. Allen
Proc. ASME. HT2013, Volume 1: Heat Transfer in Energy Systems; Thermophysical Properties; Theory and Fundamental Research in Heat Transfer, V001T01A037, July 14–19, 2013
Publisher: American Society of Mechanical Engineers
Paper No: HT2013-17476
https://doi.org/10.1115/HT2013-17476
View Paper titled, Sensitivity of Thermal Transport and Phase-Change in Thin Porous Layers to the Distribution of the Solid Matrix
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Topics: Flow (Dynamics), Fuel cells, Heat transfer, Mass transfer, Multiphase flow, Network models, Porous materials, Proton exchange membrane fuel cells, Proton exchange membranes, Water
Journal Articles

Lift-Off Behavior of Micro and Nanoparticles in Contact With a Flat Surface

Julio L. Rivera, John W. Sutherland, Jeffrey S. Allen
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. October 2013, 135(10): 101205.
Paper No: FE-12-1341
https://doi.org/10.1115/1.4024563
Published Online: August 7, 2013
View Article titled, Lift-Off Behavior of Micro and Nanoparticles in Contact With a Flat Surface
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Topics: Particulate matter, Nanoparticles, Separation (Technology), Lift (Fluid dynamics), Adhesion
Proceedings Papers

Stability of an Evaporating Liquid Film Under Nonequilibrium Conditions With Variable Gravity

Aneet D. Narendranath, James C. Hermanson, Allan A. Struthers, Robert W. Kolkka, Jeffrey S. Allen
Proc. ASME. FEDSM2012, Volume 2: Fora, 309-315, July 8–12, 2012
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2012-72283
https://doi.org/10.1115/FEDSM2012-72283
View Paper titled, Stability of an Evaporating Liquid Film Under Nonequilibrium Conditions With Variable Gravity
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Topics: Evaporation, Gravity (Force), Liquid films, Stability, Dynamics (Mechanics), Approximation, Boundary-value problems, Buoyancy, Equilibrium (Physics), Fluid dynamics
Journal Articles

Manifestation of Instability Mechanisms in Liquid Films

Aneet D. Narendranath, Jeramy Kimball, James C. Hermanson, Jeffrey S. Allen
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Photo Gallery
J. Heat Mass Transfer. August 2012, 134(8): 080908.
https://doi.org/10.1115/1.4006722
Published Online: June 27, 2012
View Article titled, Manifestation of Instability Mechanisms in Liquid Films
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Topics: Liquid films
Proceedings Papers

Optical Film Thickness Measurements Using a Reflectance Mode Swept-Field Confocal Microscope

Joseph E. Hernandez, Jeffrey S. Allen
Proc. ASME. AJK2011, ASME-JSME-KSME 2011 Joint Fluids Engineering Conference: Volume 2, Fora, 413-418, July 24–29, 2011
Publisher: American Society of Mechanical Engineers
Paper No: AJK2011-36037
https://doi.org/10.1115/AJK2011-36037
View Paper titled, Optical Film Thickness Measurements Using a Reflectance Mode Swept-Field Confocal Microscope
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Topics: Liquid films, Microchannels, Microfluidics, Microscopes, Microscopy, Optical films, Reflectance, Thickness measurement, Flow (Dynamics), Dynamics (Mechanics)
Proceedings Papers

Stability of Liquid Films

Aneet D. Narendranath, Jeramy Kimball, James C. Hermanson, Robert W. Kolkka, Jeffrey S. Allen
Proc. ASME. IMECE2010, Volume 7: Fluid Flow, Heat Transfer and Thermal Systems, Parts A and B, 1321-1331, November 12–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2010-40090
https://doi.org/10.1115/IMECE2010-40090
View Paper titled, Stability of Liquid Films
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Topics: Liquid films, Stability, Boundary-value problems, Biophysics, Lubrication theory, Physics, Polymers, Rupture, Water, Wave propagation
Proceedings Papers

Implications of Contact Line Dynamics on Taylor Bubble Flow Morphology

Alexandru Herescu, Jeffrey S. Allen
Proc. ASME. ICNMM2010, ASME 2010 8th International Conference on Nanochannels, Microchannels, and Minichannels: Parts A and B, 813-820, August 1–5, 2010
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM-ICNMM2010-30911
https://doi.org/10.1115/FEDSM-ICNMM2010-30911
View Paper titled, Implications of Contact Line Dynamics on Taylor Bubble Flow Morphology
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Topics: Bubbly flow, Dynamics (Mechanics), Glass, Hydraulic jump, Shock (Mechanics), Water, Wetting, Bubbles, Coating processes, Coatings
Proceedings Papers

The Effect of Surface Wettability on Viscous Film Deposition

Alexandru Herescu, Jeffrey S. Allen
Proc. ASME. ICNMM2009, ASME 2009 7th International Conference on Nanochannels, Microchannels and Minichannels, 661-664, June 22–24, 2009
Publisher: American Society of Mechanical Engineers
Paper No: ICNMM2009-82263
https://doi.org/10.1115/ICNMM2009-82263
View Paper titled, The Effect of Surface Wettability on Viscous Film Deposition
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Topics: Coating processes, Coatings, Film thickness, Fluids, Glass, Liquid films, Microscopes, Rupture, Water, Wetting
Proceedings Papers

Bislug Flow in Circular and Square Cross-Sectional Microchannels

Joseph E. Hernandez, B. Justin Scholfield, Jeffrey S. Allen
Proc. ASME. ICNMM2007, ASME 5th International Conference on Nanochannels, Microchannels, and Minichannels, 885-890, June 18–20, 2007
Publisher: American Society of Mechanical Engineers
Paper No: ICNMM2007-30214
https://doi.org/10.1115/ICNMM2007-30214
View Paper titled, Bislug Flow in Circular and Square Cross-Sectional Microchannels
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Topics: Flow (Dynamics), Microchannels, Fluids, Energy dissipation, Corners (Structural elements), Pressure, Slug flows, Surface tension, Wetting
Proceedings Papers

Non-Intrusive Pressure Measurement in Microchannels

Derek W. Fultz, Jeffrey S. Allen
Proc. ASME. ICNMM2007, ASME 5th International Conference on Nanochannels, Microchannels, and Minichannels, 601-606, June 18–20, 2007
Publisher: American Society of Mechanical Engineers
Paper No: ICNMM2007-30215
https://doi.org/10.1115/ICNMM2007-30215
View Paper titled, Non-Intrusive Pressure Measurement in Microchannels
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Topics: Microchannels, Pressure measurement, Pressure, Fluids, Flow (Dynamics), Backscattering, Compressibility, Cross section (Physics), Deflection, Glass