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D. E. Nikitopoulos
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Proceedings Papers

Phase Discrimination Techniques for Phase Doppler Measurements in Dispersed, Bubbly Flows

K. N. Stanley, D. E. Nikitopoulos
Proc. ASME. IMECE97, Fluids Engineering, 357-361, November 16–21, 1997
Publisher: American Society of Mechanical Engineers
Paper No: IMECE1997-0792
https://doi.org/10.1115/IMECE1997-0792
View Paper titled, Phase Discrimination Techniques for Phase Doppler Measurements in Dispersed, Bubbly Flows
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Topics: Bubbles, Bubbly flow, Doppler measurement, Flow (Dynamics), Light scattering, Fluctuations (Physics), Image processing, Imaging, Lasers, Particle size
Proceedings Papers

Fabrication for and Flow Visualization in 2.5D Rock-Based Ceramic Micromodels

Daniel S. Park, J. Upadhyay, K. Sharmin, J. F. Robbins, I. Schoegl, K. E. Thompson, D. E. Nikitopoulos
Proc. ASME. IMECE2017, Volume 10: Micro- and Nano-Systems Engineering and Packaging, V010T13A025, November 3–9, 2017
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2017-71639
https://doi.org/10.1115/IMECE2017-71639
View Paper titled, Fabrication for and Flow Visualization in 2.5D Rock-Based Ceramic Micromodels
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Topics: Ceramics, Flow visualization, Manufacturing, Rocks, Flow (Dynamics), Embossing, Geometry, Metals, Particulate matter, Binders (Materials)
Proceedings Papers

Detailed Mass Transfer Distribution in Rotating, Two-Pass Ribbed Coolant Channels With Vortex Generators

V. Eliades, D. E. Nikitopoulos, S. Acharya
Proc. ASME. GT1999, Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration, V003T01A096, June 7–10, 1999
Publisher: American Society of Mechanical Engineers
Paper No: 99-GT-424
https://doi.org/10.1115/99-GT-424
View Paper titled, Detailed Mass Transfer Distribution in Rotating, Two-Pass Ribbed Coolant Channels With Vortex Generators
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Topics: Coolants, Generators, Mass transfer, Vortices, Ducts, Rotation, Rods, Heat, Reynolds number, Blades
Proceedings Papers

Heat Transfer Enhancements in Rotating Two-Pass Coolant Channels With Profiled Ribs: Part 1 — Average Results

S. Acharya, V. Eliades, D. E. Nikitopoulos
Proc. ASME. GT2000, Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration, V003T01A035, May 8–11, 2000
Publisher: American Society of Mechanical Engineers
Paper No: 2000-GT-0227
https://doi.org/10.1115/2000-GT-0227
View Paper titled, Heat Transfer Enhancements in Rotating Two-Pass Coolant Channels With Profiled Ribs: Part 1 — Average Results
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Topics: Coolants, Heat transfer, Ducts, Heat, Flow (Dynamics), Gas turbines, Reynolds number, Rotation, Vorticity
Proceedings Papers

Heat Transfer Enhancements in Rotating Two-Pass Coolant Channels With Profiled Ribs: Part 2 — Detailed Measurements

D. E. Nikitopoulos, V. Eliades, S. Acharya
Proc. ASME. GT2000, Volume 3: Heat Transfer; Electric Power; Industrial and Cogeneration, V003T01A034, May 8–11, 2000
Publisher: American Society of Mechanical Engineers
Paper No: 2000-GT-0226
https://doi.org/10.1115/2000-GT-0226
View Paper titled, Heat Transfer Enhancements in Rotating Two-Pass Coolant Channels With Profiled Ribs: Part 2 — Detailed Measurements
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Topics: Coolants, Heat transfer, Mass transfer, Heat, Reynolds number, Rotation
Proceedings Papers

Flow Visualization in Artificial Porous Media From Microfluidic PMMA Devices

D. S. Park, S. King, K. E. Thompson, C. S. Willson, D. E. Nikitopoulos
Proc. ASME. IMECE2011, Volume 6: Fluids and Thermal Systems; Advances for Process Industries, Parts A and B, 1159-1166, November 11–17, 2011
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2011-65266
https://doi.org/10.1115/IMECE2011-65266
View Paper titled, Flow Visualization in Artificial Porous Media From Microfluidic PMMA Devices
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Topics: Flow visualization, Microfluidics, Porous materials, Particulate matter, Microchannels, Bonding, Brass (Metal), Bubbles, Embossing
Proceedings Papers

Control of Internal Stress for High Quality Nickel Large Area Mold Inserts

D. S. Park, V. Singh, B. H. You, N. Kim, P.-C. Chen, S. A. Soper, D. E. Nikitopoulos, J. Goettert, M. C. Murphy
Proc. ASME. IMECE2009, Volume 12: Micro and Nano Systems, Parts A and B, 263-269, November 13–19, 2009
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2009-11639
https://doi.org/10.1115/IMECE2009-11639
View Paper titled, Control of Internal Stress for High Quality Nickel Large Area Mold Inserts
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Topics: Nickel, Stress, Electroplating, Contamination, Electrodeposition, Microfluidics, Molding, Nanoscale phenomena, Polymers, Semiconductor wafers
Proceedings Papers

A High Throughput Microfluidic Thermal Reactor

P.-C. Chen, D. S. Park, B. H. You, N. Kim, T. Park, D. E. Nikitopoulos, S. A. Soper, M. C. Murphy
Proc. ASME. IMECE2009, Volume 2: Biomedical and Biotechnology Engineering, 273-275, November 13–19, 2009
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2009-13130
https://doi.org/10.1115/IMECE2009-13130
View Paper titled, A High Throughput Microfluidic Thermal Reactor
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Topics: Microfluidics, Thermal reactors, DNA, Flow (Dynamics), Temperature, Cycles, Chain, Control systems, Temperature distribution
Proceedings Papers

A Thermal System for a High Throughput Continuous Flow Polymerase Chain Reaction Device (CFPCR)

P.-C. Chen, D. S. Park, B. H. You, N. Kim, T. Park, Y. Desta, S. Park, D. E. Nikitopoulos, S. A. Soper, M. C. Murphy
Proc. ASME. IMECE2008, Volume 13: Nano-Manufacturing Technology; and Micro and Nano Systems, Parts A and B, 313-317, October 31–November 6, 2008
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2008-68975
https://doi.org/10.1115/IMECE2008-68975
View Paper titled, A Thermal System for a High Throughput Continuous Flow Polymerase Chain Reaction Device (CFPCR)
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Topics: Chain, Flow (Dynamics), Thermal systems, Copper, Strips, Temperature, Temperature distribution, Computer simulation, Feedback, Heat transfer
Proceedings Papers

Optimization of Geometry for Continuous Flow PCR Devices in a Titer Plate-Based PCR Multi-Reactor Platform

D. S. Park, P.-C. Chen, B. H. You, N. Kim, T. Park, P. Datta, Y. Desta, S. A. Soper, D. E. Nikitopoulos, M. C. Murphy
Proc. ASME. IMECE2007, Volume 11: Micro and Nano Systems, Parts A and B, 113-118, November 11–15, 2007
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2007-42135
https://doi.org/10.1115/IMECE2007-42135
View Paper titled, Optimization of Geometry for Continuous Flow PCR Devices in a Titer Plate-Based PCR Multi-Reactor Platform
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Topics: Flow (Dynamics), Geometry, Optimization, Bonding, Chain, Design, DNA, Electroplating, Embossing, Engineering prototypes
Proceedings Papers

Multiphase Digital Particle Image Velocimetry in a Dispersed, Bubbly, Axisymmetric Jet

G. Chaine, D. E. Nikitopoulos
Proc. ASME. FEDSM2002, Volume 2: Symposia and General Papers, Parts A and B, 663-670, July 14–18, 2002
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2002-31435
https://doi.org/10.1115/FEDSM2002-31435
View Paper titled, Multiphase Digital Particle Image Velocimetry in a Dispersed, Bubbly, Axisymmetric Jet
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Topics: Particulate matter, Bubbles, Flow (Dynamics), Jets, Reynolds number, Two-phase flow, Velocity measurement, Visualization, Water
Proceedings Papers

Bubble Size Effects on Dispersed Phase Motion in Vertical Bubbly Pipe Flow

D. E. Nikitopoulos, J. Fiedler, M. Dowden, E. Evans
Proc. ASME. FEDSM2003, Volume 1: Fora, Parts A, B, C, and D, 1757-1763, July 6–10, 2003
Publisher: American Society of Mechanical Engineers
Paper No: FEDSM2003-45553
https://doi.org/10.1115/FEDSM2003-45553
View Paper titled, Bubble Size Effects on Dispersed Phase Motion in Vertical Bubbly Pipe Flow
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Topics: Bubbles, Pipe flow, Pipes, Shapes, Statistics, Algorithms, Bubbly flow, Deformation, Errors, Gas flow
Proceedings Papers

Heat/Mass Transfer in 1:4 Rectangular Passages With Rotation

Peeyush Agarwal, Sumanta Acharya, D. E. Nikitopoulos
Proc. ASME. GT2003, Volume 5: Turbo Expo 2003, Parts A and B, 459-470, June 16–19, 2003
Publisher: American Society of Mechanical Engineers
Paper No: GT2003-38615
https://doi.org/10.1115/GT2003-38615
View Paper titled, Heat/Mass Transfer in 1:4 Rectangular Passages With Rotation
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Topics: Heat, Mass transfer, Rotation, Chords (Trusses), Coolants, Reynolds number, Turbine blades
Proceedings Papers

Heat/Mass Transfer in a 4:1 AR Smooth and Ribbed Coolant Passage With Rotation in 90-Degree and 45-Degree Orientations

S. Acharya, P. Agarwal, D. E. Nikitopoulos
Proc. ASME. GT2004, Volume 3: Turbo Expo 2004, 813-824, June 14–17, 2004
Publisher: American Society of Mechanical Engineers
Paper No: GT2004-53928
https://doi.org/10.1115/GT2004-53928
View Paper titled, Heat/Mass Transfer in a 4:1 AR Smooth and Ribbed Coolant Passage With Rotation in 90-Degree and 45-Degree Orientations
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Topics: Coolants, Heat, Mass transfer, Rotation, Heat transfer, Reynolds number, Turbine blades
Journal Articles

Heat Transfer in 1:4 Rectangular Passages With Rotation

Peeyush Agarwal, Sumanta Acharya, D. E. Nikitopoulos
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Technical Papers
J. Turbomach. October 2003, 125(4): 726–733.
https://doi.org/10.1115/1.1626683
Published Online: December 1, 2003
View Article titled, Heat Transfer in 1:4 Rectangular Passages With Rotation
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Topics: Flow (Dynamics), Heat transfer, Mass transfer, Reynolds number, Rotation, Ducts
Journal Articles

Counter-Current and Co-Current Gas Kicks in “Horizontal” Wells: Non-Newtonian Rheology Effects

H. Baca, D. E. Nikitopoulos, J. R. Smith, A. T. Bourgoyne
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Technical Papers
J. Energy Resour. Technol. March 2003, 125(1): 51–60.
https://doi.org/10.1115/1.1555659
Published Online: March 14, 2003
View Article titled, Counter-Current and Co-Current Gas Kicks in “Horizontal” Wells: Non-Newtonian Rheology Effects
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Topics: Flow (Dynamics), Gas flow, Polymers, Water, Wells, Drilling, Rheology, Yield point, Porosity, Pipes
Journal Articles

Heat Transfer Enhancements in Rotating Two-Pass Coolant Channels With Profiled Ribs: Part 2—Detailed Measurements

D. E. Nikitopoulos, V. Eliades, S. Acharya
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Technical Papers
J. Turbomach. January 2001, 123(1): 107–114.
https://doi.org/10.1115/1.1331538
Published Online: February 1, 2000
View Article titled, Heat Transfer Enhancements in Rotating Two-Pass Coolant Channels With Profiled Ribs: Part 2—Detailed Measurements
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Topics: Coolants, Ducts, Flow (Dynamics), Heat transfer, Mass transfer, Rotation, Reynolds number, Gas turbines
Journal Articles

Heat Transfer Enhancements in Rotating Two-Pass Coolant Channels With Profiled Ribs: Part 1–Average Results

S. Acharya, V. Eliades, D. E. Nikitopoulos
Journal: Journal of Turbomachinery
Publisher: ASME
Article Type: Technical Papers
J. Turbomach. January 2001, 123(1): 97–106.
https://doi.org/10.1115/1.1331539
Published Online: February 1, 2000
View Article titled, Heat Transfer Enhancements in Rotating Two-Pass Coolant Channels With Profiled Ribs: Part 1–Average Results
Open the PDF for Heat Transfer Enhancements in Rotating Two-Pass Coolant Channels With Profiled Ribs: Part 1–Average Results in another window
Topics: Coolants, Ducts, Flow (Dynamics), Heat transfer, Mass transfer, Gas turbines
Journal Articles

Co-Current and Countercurrent Migration of Gas Kicks in “Horizontal” Wells

H. Baca, J. Smith, A. T. Bourgoyne, D. E. Nikitopoulos
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Technical Papers
J. Energy Resour. Technol. June 1999, 121(2): 96–101.
https://doi.org/10.1115/1.2795075
Published Online: June 1, 1999
View Article titled, Co-Current and Countercurrent Migration of Gas Kicks in “Horizontal” Wells
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Topics: Drilling, Flow (Dynamics), Fluids, Gas flow, Pipes, Porosity, Slug flows, Transparency, Water, Wells
Journal Articles

Mass/Heat Transfer in a Ribbed Passage With Cylindrical Vortex Generators: The Effect of Generator-Rib Spacing

S. Acharya, R. G. Hibbs, Y. Chen, D. E. Nikitopoulos
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Technical Papers
J. Heat Mass Transfer. November 2000, 122(4): 641–652.
https://doi.org/10.1115/1.1288026
Published Online: April 13, 1999
View Article titled, Mass/Heat Transfer in a Ribbed Passage With Cylindrical Vortex Generators: The Effect of Generator-Rib Spacing
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Topics: Generators, Heat transfer, Mass transfer, Vortices, Reynolds number, Clearances (Engineering)