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Journal Articles

Experimental Study on Flow and Thermal Transport in Additively Manufactured Lattices Based on Cube-Shaped Unit Cell

Prashant Singh, Youssef Aider, Mantha S. Phanikumar, Roop L. Mahajan
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. February 2025, 147(2): 022701.
Paper No: HT-24-1153
https://doi.org/10.1115/1.4066775
Published Online: November 15, 2024
View Article titled, Experimental Study on Flow and Thermal Transport in Additively Manufactured Lattices Based on Cube-Shaped Unit Cell
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Topics: Additive manufacturing, Buoyancy, Convection, Flow (Dynamics), Forced convection, Heat transfer, Thermal conductivity, Heat
Proceedings Papers

Analysis of Tombstoning Phenomenon During Reflow

Quan Qi, Roop L. Mahajan
Proc. ASME. IMECE96, Manufacturing Science and Engineering, 105-118, November 17–22, 1996
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1996-0781
https://doi.org/10.1115/IMECE1996-0781
View Paper titled, Analysis of Tombstoning Phenomenon During Reflow
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Topics: Algebra, Dynamic models, Equations of motion, Geometry, Gravity (Force), Solders
Proceedings Papers

Buoyancy-Driven Convection in Additively Manufactured Cubic Lattices

Prashant Singh, Mantha S. Phanikumar, Roop L. Mahajan
Proc. ASME. HT2022, ASME 2022 Heat Transfer Summer Conference, V001T06A010, July 11–13, 2022
Publisher: American Society of Mechanical Engineers
Paper No: HT2022-85740
https://doi.org/10.1115/HT2022-85740
View Paper titled, Buoyancy-Driven Convection in Additively Manufactured Cubic Lattices
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Topics: Additive manufacturing, Buoyancy, Convection, Heating, Binders (Materials), Bronze, Gravity (Force), Heat transfer, Porosity, Rayleigh number
Proceedings Papers

Optimal Design of Additively Manufactured Metal Lattice Heat Sinks for Electronics Cooling

Bharath Bharadwaj, Prashant Singh, Roop L. Mahajan
Proc. ASME. HT2022, ASME 2022 Heat Transfer Summer Conference, V001T16A002, July 11–13, 2022
Publisher: American Society of Mechanical Engineers
Paper No: HT2022-85400
https://doi.org/10.1115/HT2022-85400
View Paper titled, Optimal Design of Additively Manufactured Metal Lattice Heat Sinks for Electronics Cooling
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Topics: Additive manufacturing, Computer cooling, Cooling, Design, Heat sinks, Metals, Optimization, Thermal management
Proceedings Papers

An Analytical-Experimental Study for the Determination of the Effective Thermal Conductivity of High Porosity Fibrous Foams

Anandaroop Bhattacharya, Varaprasad V. Calmidi, Roop L. Mahajan
Proc. ASME. IMECE99, Application of Porous Media Methods for Engineered Materials, 13-20, November 14–19, 1999
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1999-0795
https://doi.org/10.1115/IMECE1999-0795
View Paper titled, An Analytical-Experimental Study for the Determination of the Effective Thermal Conductivity of High Porosity Fibrous Foams
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Topics: Foams (Chemistry), Porosity, Thermal conductivity, Fibers, Fluids, Metals, Aluminum, Carbon, Cross section (Physics), Density
Proceedings Papers

Forced-Convective Condensation of Pure Steam and Ammonia-Steam Vapor Mixtures in a Shell-Tube Condenser

Ratnesh K. Sharma, Vahab Hassani, Roop L. Mahajan
Proc. ASME. IMECE99, Heat Transfer: Volume 2, 11-28, November 14–19, 1999
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1999-1009
https://doi.org/10.1115/IMECE1999-1009
View Paper titled, Forced-Convective Condensation of Pure Steam and Ammonia-Steam Vapor Mixtures in a Shell-Tube Condenser
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Topics: Condensation, Condensers (steam plant), Shells, Steam, Vapors, Flow (Dynamics), Annulus, Condensed matter, Heat transfer coefficients, Drainage
Proceedings Papers

Thermal Performance of Different Carbonaceous Nanoparticles as Additives to Thermal Paste as an Interface Material

Bharath Bharadwaj, Prashant Singh, Roop L. Mahajan
Proc. ASME. InterPACK2021, ASME 2021 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems, V001T08A002, October 26–28, 2021
Publisher: American Society of Mechanical Engineers
Paper No: IPACK2021-69254
https://doi.org/10.1115/IPACK2021-69254
View Paper titled, Thermal Performance of Different Carbonaceous Nanoparticles as Additives to Thermal Paste as an Interface Material
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Topics: Agglomeration (Materials), Coal, Computer cooling, Electronic packages, Electronic packaging, Energy dissipation, Graphene, Graphite, Heat, Heat sinks
Proceedings Papers

MEMS as In-Vivo Sensors and Actuators: Challenges and Opportunities

Roop L. Mahajan
Proc. ASME. IMECE2000, Heat Transfer: Volume 2, 121-122, November 5–10, 2000
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2000-1417
https://doi.org/10.1115/IMECE2000-1417
View Paper titled, MEMS as In-Vivo Sensors and Actuators: Challenges and Opportunities
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Topics: Actuators, Microelectromechanical systems, Sensors, Biomedicine, Manufacturing, Microfabrication, Reliability, Silicon, Stability
Proceedings Papers

Buoyancy-Induced Convection in Metal Foam and Finned Metal Foam Heat Sinks ©

A. Bhattacharya, Roop L. Mahajan
Proc. ASME. IMECE2000, Heat Transfer: Volume 4, 391-398, November 5–10, 2000
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2000-1544
https://doi.org/10.1115/IMECE2000-1544
View Paper titled, Buoyancy-Induced Convection in Metal Foam and Finned Metal Foam Heat Sinks ©
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Topics: Buoyancy, Convection, Heat sinks, Metal foams, Heat transfer, Fins, Porosity, Aluminum, Heat transfer coefficients, Permeability
Journal Articles

The Effect of Metal Foam Thickness on Jet Array Impingement Heat Transfer in High-Porosity Aluminum Foams

Prashant Singh, Karthik Nithyanandam, Mingyang Zhang, Roop L. Mahajan
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. May 2020, 142(5): 052301.
Paper No: HT-19-1298
https://doi.org/10.1115/1.4045640
Published Online: March 17, 2020
View Article titled, The Effect of Metal Foam Thickness on Jet Array Impingement Heat Transfer in High-Porosity Aluminum Foams
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Topics: Flow (Dynamics), Foams (Chemistry), Heat, Heat transfer, Metal foams, Ducts, Jets, Porosity, Density, Energy dissipation
Proceedings Papers

An Experimental Investigation of the Contribution of Different Carbonaceous Nanomaterials to Thermal Conductance of Thermal Interface Materials

Prashant Singh, Seul-Yi Lee, Roop L. Mahajan
Proc. ASME. IMECE2019, Volume 8: Heat Transfer and Thermal Engineering, V008T09A074, November 11–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2019-11553
https://doi.org/10.1115/IMECE2019-11553
View Paper titled, An Experimental Investigation of the Contribution of Different Carbonaceous Nanomaterials to Thermal Conductance of Thermal Interface Materials
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Topics: Graphene, Nanomaterials, Thermal conductivity
Proceedings Papers

Effect of Metal Foam Thickness and Pore Density on Array Jet Impingement Heat Transfer

Prashant Singh, Mingyang Zhang, Roop L. Mahajan
Proc. ASME. IMECE2019, Volume 8: Heat Transfer and Thermal Engineering, V008T09A035, November 11–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2019-11591
https://doi.org/10.1115/IMECE2019-11591
View Paper titled, Effect of Metal Foam Thickness and Pore Density on Array Jet Impingement Heat Transfer
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Topics: Density, Heat transfer, Metal foams
Proceedings Papers

Array Jet Impingement Onto High Porosity Thin Metal Foams at Zero Jet-to-Foam Spacing

Prashant Singh, Mingyang Zhang, Jaideep Pandit, Roop L. Mahajan
Proc. ASME. IMECE2018, Volume 8B: Heat Transfer and Thermal Engineering, V08BT10A020, November 9–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2018-87915
https://doi.org/10.1115/IMECE2018-87915
View Paper titled, Array Jet Impingement Onto High Porosity Thin Metal Foams at Zero Jet-to-Foam Spacing
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Topics: Metal foams, Porosity, Heat transfer, Convection, Cooling, Flow (Dynamics), Foams (Chemistry), Pressure drop, Aluminum, Aluminum plate
Proceedings Papers

Cultivating Emerging and Black Swan Technologies

Roop L. Mahajan, Rolf Mueller, Christopher B. Williams, Jeff Reed, Thomas A. Campbell, Naren Ramakrishnan
Proc. ASME. IMECE2012, Volume 6: Energy, Parts A and B, 549-557, November 9–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2012-89339
https://doi.org/10.1115/IMECE2012-89339
View Paper titled, Cultivating Emerging and Black Swan Technologies
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Topics: Computers, Cutting, Ethics, Internet, Lasers, Manufacturing, Roads
Journal Articles

An Experimental and Numerical Investigation of Phase Change Electrodes for Therapeutic Irreversible Electroporation

Christopher B. Arena, Roop L. Mahajan, Marissa Nichole Rylander, Rafael V. Davalos
Journal: Journal of Biomechanical Engineering
Publisher: ASME
Article Type: Research-Article
J Biomech Eng. November 2013, 135(11): 111009.
Paper No: BIO-13-1182
https://doi.org/10.1115/1.4025334
Published Online: October 3, 2013
View Article titled, An Experimental and Numerical Investigation of Phase Change Electrodes for Therapeutic Irreversible Electroporation
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Topics: Electrodes, Electroporation, Temperature, Biological tissues, Gallium, Melting point
Proceedings Papers

Phase Change Electrodes for Reducing Joule Heating During Irreversible Electroporation

Christopher B. Arena, Roop L. Mahajan, Marissa Nichole Rylander, Rafael V. Davalos
Proc. ASME. SBC2012, ASME 2012 Summer Bioengineering Conference, Parts A and B, 473-474, June 20–23, 2012
Publisher: American Society of Mechanical Engineers
Paper No: SBC2012-80825
https://doi.org/10.1115/SBC2012-80825
View Paper titled, Phase Change Electrodes for Reducing Joule Heating During Irreversible Electroporation
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Topics: Electrodes, Electroporation, Heating, Joules, Biological tissues, Ablation (Vaporization technology), Electric fields, Blood vessels, Cell membranes, Magnetic resonance imaging
Proceedings Papers

Control of Temperature Uniformity During the Manufacture of Stable Thin-Film Photovoltaic Devices

Chetan P. Malhotra, Roop L. Mahajan, W. S. Sampath, Kurt L. Barth, Robert A. Enzenroth
Proc. ASME. IMECE2004, Heat Transfer, Volume 3, 547-555, November 13–19, 2004
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2004-61331
https://doi.org/10.1115/IMECE2004-61331
View Paper titled, Control of Temperature Uniformity During the Manufacture of Stable Thin-Film Photovoltaic Devices
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Topics: Temperature uniformity, Thin films, Radiation (Physics), Cavities, Control systems, Finite element analysis, Glass, Graphite, Heat conduction, Temperature
Proceedings Papers

Numerical Modeling of Buoyancy Induced Convection in Finned Heat Sinks in Presence of Unheated and Heated Shrouds

S. S. Bahga, A. Bhattacharya, Roop L. Mahajan
Proc. ASME. IMECE2005, Heat Transfer, Part A, 725-731, November 5–11, 2005
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2005-80895
https://doi.org/10.1115/IMECE2005-80895
View Paper titled, Numerical Modeling of Buoyancy Induced Convection in Finned Heat Sinks in Presence of Unheated and Heated Shrouds
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Topics: Buoyancy, Computer simulation, Convection, Heat sinks, Heating, Clearances (Engineering), Geometry, Boundary-value problems, Fins, Heat transfer
Proceedings Papers

High Knudsen Number Physical Vapor Deporition: Predicting Deposition Rates and Uniformity

Chetan P. Malhotra, Roop L. Mahajan, W. S. Sampath
Proc. ASME. IMECE2005, Heat Transfer, Part B, 1001-1008, November 5–11, 2005
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2005-82329
https://doi.org/10.1115/IMECE2005-82329
View Paper titled, High Knudsen Number Physical Vapor Deporition: Predicting Deposition Rates and Uniformity
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Topics: Cavities, Computational fluid dynamics, Computer software, Finite element analysis, Flow (Dynamics), Knudsen number, Radiation (Physics), Simulation, Thermal radiation, Thin films
Proceedings Papers

Micromachined Electrical Conductivity Probe for RF Ablation of Tumors

Ming Yi, Hrishikesh V. Panchawagh, Roop L. Mahajan, Zhengjun Liu, S. Nahum Goldberg
Proc. ASME. IMECE2005, Advances in Bioengineering, 53-56, November 5–11, 2005
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2005-82064
https://doi.org/10.1115/IMECE2005-82064
View Paper titled, Micromachined Electrical Conductivity Probe for RF Ablation of Tumors
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Topics: Electrical conductivity, Micromachining, Probes, Radiofrequency ablation, Tumors, Electrodes, Biological tissues, Calibration, Cancer, Diffusion (Physics)