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Ali Koşar
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Journal Articles

Optimization of Y-Shaped Micro-Mixers With a Mixing Chamber for Increased Mixing Efficiency and Decreased Pressure Drop

Umut Ege Samancıoğlu, Ali Koşar, Erdal Cetkin
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. April 2024, 146(4): 043201.
Paper No: HT-23-1294
https://doi.org/10.1115/1.4064443
Published Online: January 29, 2024
View Article titled, Optimization of Y-Shaped Micro-Mixers With a Mixing Chamber for Increased Mixing Efficiency and Decreased Pressure Drop
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Topics: Design, Optimization, Pressure drop, Reynolds number, Fluids, Flow (Dynamics)
Proceedings Papers

Numerical and Experimental Investigation on Evaporation of Water Droplet on Surfaces With Mixed Wettability

Akam Aboubakri, Cenk Yanik, Yiğit Akkuş, Ali Koşar, Ali K. Sadaghiani
Proc. ASME. ICNMM2020, ASME 2020 18th International Conference on Nanochannels, Microchannels, and Minichannels, V001T06A002, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: ICNMM2020-1055
https://doi.org/10.1115/ICNMM2020-1055
View Paper titled, Numerical and Experimental Investigation on Evaporation of Water Droplet on Surfaces With Mixed Wettability
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Topics: Drops, Evaporation, Water
Proceedings Papers

Steam Flow Condensation on Superhydrophobic Surfaces in a High Aspect Ratio Microchannel

Mirvahid Mohammadpour Chehrghani, Taher Abbasiasl, Ghazaleh Gharib, Ali Kosar, Abdolali Khalili Sadaghiani
Proc. ASME. ICNMM2020, ASME 2020 18th International Conference on Nanochannels, Microchannels, and Minichannels, V001T16A007, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: ICNMM2020-1070
https://doi.org/10.1115/ICNMM2020-1070
View Paper titled, Steam Flow Condensation on Superhydrophobic Surfaces in a High Aspect Ratio Microchannel
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Topics: Condensation, Flow (Dynamics), Microchannels, Steam
Proceedings Papers

Hydrodynamic Characteristics of Micro Heat Sinks With In-Line and Staggered Arrangements of Cylindrical Micro Pin Fins

Ali Mohammadi, Ali Koşar
Proc. ASME. IMECE2017, Volume 7: Fluids Engineering, V007T09A046, November 3–9, 2017
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2017-70544
https://doi.org/10.1115/IMECE2017-70544
View Paper titled, Hydrodynamic Characteristics of Micro Heat Sinks With In-Line and Staggered Arrangements of Cylindrical Micro Pin Fins
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Topics: Fins, Heat sinks, Reynolds number, Flow (Dynamics), Coolants, Dimensions, Engineering simulation, Friction, Heat flux, Laminar flow
Journal Articles

Numerical Heat Transfer and Entropy Analysis on Liquid Slip Flows Through Parallel-Plate Microchannels

Mostafa Shojaeian, Masoumeh Nedaei, Mehmet Yildiz, Ali Koşar
Journal: Journal of Thermal Science and Engineering Applications
Publisher: ASME
Article Type: Research-Article
J. Thermal Sci. Eng. Appl. April 2018, 10(2): 021003.
Paper No: TSEA-16-1249
https://doi.org/10.1115/1.4037199
Published Online: August 29, 2017
View Article titled, Numerical Heat Transfer and Entropy Analysis on Liquid Slip Flows Through Parallel-Plate Microchannels
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Topics: Entropy, Flow (Dynamics), Heat flux, Heat transfer, Microchannels, Temperature, Computer simulation
Journal Articles

Pool Boiling Heat Transfer Characteristics of Inclined pHEMA-Coated Surfaces

Abdolali Khalili Sadaghiani, Ahmad Reza Motezakker, Alsan Volkan Özpınar, Gözde Özaydın İnce, Ali Koşar
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. November 2017, 139(11): 111501.
Paper No: HT-16-1552
https://doi.org/10.1115/1.4036651
Published Online: June 21, 2017
View Article titled, Pool Boiling Heat Transfer Characteristics of Inclined pHEMA-Coated Surfaces
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Topics: Boiling, Bubbles, Coatings, Heat transfer, Heat transfer coefficients, Pool boiling, Silicon, Nucleation (Physics), Heat flux, Vapors
Journal Articles

Hydrodynamic and Thermal Performance of Microchannels With Different Staggered Arrangements of Cylindrical Micro Pin Fins

Ali Mohammadi, Ali Koşar
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. June 2017, 139(6): 062402.
Paper No: HT-16-1522
https://doi.org/10.1115/1.4035655
Published Online: February 28, 2017
View Article titled, Hydrodynamic and Thermal Performance of Microchannels With Different Staggered Arrangements of Cylindrical Micro Pin Fins
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Topics: Friction, Microchannels, Pressure drop, Reynolds number, Wakes, Fins, Flow (Dynamics)
Proceedings Papers

Numerical Investigation of Slip Flows Through 2-D U-Shaped Microchannels

Mostafa Shojaeian, Ali Koşar
Proc. ASME. IMECE2016, Volume 8: Heat Transfer and Thermal Engineering, V008T10A032, November 11–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2016-66136
https://doi.org/10.1115/IMECE2016-66136
View Paper titled, Numerical Investigation of Slip Flows Through 2-D U-Shaped Microchannels
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Topics: Flow (Dynamics), Microchannels, Reynolds number, Computer software, Fluid dynamics, Microelectromechanical systems, Boundary-value problems, Computer simulation, Friction, Gas flow
Proceedings Papers

Hydrodynamic and Thermal Characteristics of the Flow Inside a Rectangular Microchannel With Different Cylindrical Micro Pin Fins

Ali Mohammadi, Ali Koşar
Proc. ASME. ICNMM2016, ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels, V001T02A001, July 10–14, 2016
Publisher: American Society of Mechanical Engineers
Paper No: ICNMM2016-7993
https://doi.org/10.1115/ICNMM2016-7993
View Paper titled, Hydrodynamic and Thermal Characteristics of the Flow Inside a Rectangular Microchannel With Different Cylindrical Micro Pin Fins
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Topics: Fins, Flow (Dynamics), Microchannels, Reynolds number, Dimensions, Friction, Heat flux, Licensing, Pressure drop, Temperature
Journal Articles

Hydrodynamic and Thermal Performance of Microchannels With Different In-Line Arrangements of Cylindrical Micropin Fins

Ali Mohammadi, Ali Koşar
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. December 2016, 138(12): 122403.
Paper No: HT-16-1077
https://doi.org/10.1115/1.4034164
Published Online: August 16, 2016
View Article titled, Hydrodynamic and Thermal Performance of Microchannels With Different In-Line Arrangements of Cylindrical Micropin Fins
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Topics: Fins, Friction, Microchannels, Pressure drop, Reynolds number, Flow (Dynamics), Wakes
Proceedings Papers

An Experimental Study on Flow Boiling Characteristics of pHEMA Nano-Coated Surfaces in a Microchannel

Abdolali Khalili Sadaghiani, Yağmur Şişman, Gözde Özaydın İnce, Ali Koşar
Proc. ASME. MNHMT2016, Volume 2: Micro/Nano-Thermal Manufacturing and Materials Processing; Boiling, Quenching and Condensation Heat Transfer on Engineered Surfaces; Computational Methods in Micro/Nanoscale Transport; Heat and Mass Transfer in Small Scale; Micro/Miniature Multi-Phase Devices; Biomedical Applications of Micro/Nanoscale Transport; Measurement Techniques and Thermophysical Properties in Micro/Nanoscale; Posters, V002T08A002, January 4–6, 2016
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2016-6573
https://doi.org/10.1115/MNHMT2016-6573
View Paper titled, An Experimental Study on Flow Boiling Characteristics of pHEMA Nano-Coated Surfaces in a Microchannel
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Topics: Boiling, Flow (Dynamics), Microchannels, Heat transfer coefficients, Coatings, Dimensions, Fluids, Flux (Metallurgy), Heat, Nucleate boiling
Proceedings Papers

Nucleate Boiling Heat Transfer Enhancement Using Nanostructured Al-Alloy Plates

Yağmur Şişman, Abdolali Khalili Sadaghiani, Khedir R. Khedir, Tansel Karabacak, Ali Koşar
Proc. ASME. MNHMT2016, Volume 2: Micro/Nano-Thermal Manufacturing and Materials Processing; Boiling, Quenching and Condensation Heat Transfer on Engineered Surfaces; Computational Methods in Micro/Nanoscale Transport; Heat and Mass Transfer in Small Scale; Micro/Miniature Multi-Phase Devices; Biomedical Applications of Micro/Nanoscale Transport; Measurement Techniques and Thermophysical Properties in Micro/Nanoscale; Posters, V002T08A003, January 4–6, 2016
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2016-6582
https://doi.org/10.1115/MNHMT2016-6582
View Paper titled, Nucleate Boiling Heat Transfer Enhancement Using Nanostructured Al-Alloy Plates
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Topics: Aluminum alloys, Heat transfer, Nucleate boiling, Plates (structures), Boiling, Bubbles, Nanostructures , Water, Cavities, Density
Proceedings Papers

Experimental Study on Heat Transfer of Multi-Walled Carbon Nanotubes/Water Nanofluids in Horizontal Microtubes

Mehrdad Karimzadehkhouei, Abdolali Khalili Sadaghiani, Kürşat Şendur, M. Pınar Mengüç, Ali Koşar
Proc. ASME. MNHMT2016, Volume 1: Micro/Nanofluidics and Lab-on-a-Chip; Nanofluids; Micro/Nanoscale Interfacial Transport Phenomena; Micro/Nanoscale Boiling and Condensation Heat Transfer; Micro/Nanoscale Thermal Radiation; Micro/Nanoscale Energy Devices and Systems, V001T02A010, January 4–6, 2016
Publisher: American Society of Mechanical Engineers
Paper No: MNHMT2016-6574
https://doi.org/10.1115/MNHMT2016-6574
View Paper titled, Experimental Study on Heat Transfer of Multi-Walled Carbon Nanotubes/Water Nanofluids in Horizontal Microtubes
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Topics: Heat transfer, Multi-walled carbon nanotubes, Nanofluids, Water, Carbon nanotubes, Convection, Nanoparticles, Scanning electron microscopy
Proceedings Papers

Visualization of Spray Structure at the Outlet of the Micro Orifices

Morteza Ghorbani, Ali Koşar
Proc. ASME. ICNMM2015, ASME 2015 13th International Conference on Nanochannels, Microchannels, and Minichannels, V001T04A058, July 6–9, 2015
Publisher: American Society of Mechanical Engineers
Paper No: ICNMM2015-48304
https://doi.org/10.1115/ICNMM2015-48304
View Paper titled, Visualization of Spray Structure at the Outlet of the Micro Orifices
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Topics: Orifices, Sprays, Visualization, Cavitation, Flow (Dynamics), Microchannels, Pressure, Drops, Biomedicine, Boundary-value problems
Journal Articles

Assessment of Probe-to-Specimen Distance Effect in Kidney Stone Treatment With Hydrodynamic Cavitation

Dogan Uzusen, Ebru Demir, Osman Yavuz Perk, Ozlem Oral, Sinan Ekici, Mustafa Unel, Devrim Gozuacik, Ali Kosar
Journal: Journal of Medical Devices
Publisher: ASME
Article Type: Research-Article
J. Med. Devices. September 2015, 9(3): 031001.
Paper No: MED-14-1154
https://doi.org/10.1115/1.4030274
Published Online: September 1, 2015
View Article titled, Assessment of Probe-to-Specimen Distance Effect in Kidney Stone Treatment With Hydrodynamic Cavitation
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Topics: Bubbles, Cavitation, Erosion, Kidney, Probes, Pressure, Flow (Dynamics)
Journal Articles

Flow Boiling Enhancement in Microtubes With Crosslinked pHEMA Coatings and the Effect of Coating Thickness

Taha Çıkım, Efe Armağan, Gozde Ozaydin Ince, Ali Koşar
Journal: ASME Journal of Heat and Mass Transfer
Publisher: ASME
Article Type: Research-Article
J. Heat Mass Transfer. August 2014, 136(8): 081504.
Paper No: HT-13-1486
https://doi.org/10.1115/1.4027352
Published Online: May 2, 2014
View Article titled, Flow Boiling Enhancement in Microtubes With Crosslinked pHEMA Coatings and the Effect of Coating Thickness
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Topics: Boiling, Coatings, Flow (Dynamics), Heat transfer, Critical heat flux, Coating processes
Proceedings Papers

Flow Boiling Enhancement in Microtubes With Crosslinked pHEMA Coatings

Taha Çıkım, Efe Armağan, Gözde Özaydın İnce, Ali Koşar
Proc. ASME. IMECE2013, Volume 8C: Heat Transfer and Thermal Engineering, V08CT09A016, November 15–21, 2013
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2013-64388
https://doi.org/10.1115/IMECE2013-64388
View Paper titled, Flow Boiling Enhancement in Microtubes With Crosslinked pHEMA Coatings
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Topics: Boiling, Coatings, Cooling, Flow (Dynamics)
Proceedings Papers

Numerical Investigation of Fully Developed Fluid Flow and Heat Transfer in Double-Trapezoidal Microchannels

Mostafa Shojaeian, Ali Koşar
Proc. ASME. IMECE2013, Volume 10: Micro- and Nano-Systems Engineering and Packaging, V010T11A029, November 15–21, 2013
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2013-66734
https://doi.org/10.1115/IMECE2013-66734
View Paper titled, Numerical Investigation of Fully Developed Fluid Flow and Heat Transfer in Double-Trapezoidal Microchannels
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Topics: Fluid dynamics, Heat transfer, Microchannels, Poiseuille flow, Boundary-value problems, Finite volume methods, Fluids, Shapes, Slip flow, Wall temperature
Journal Articles

Experimental Study on Convective Heat Transfer Performance of Iron Oxide Based Ferrofluids in Microtubes

Evrim Kurtoğlu, Alihan Kaya, Devrim Gözüaçık, Havva Funda Yağcı Acar, Ali Koşar
Journal: Journal of Thermal Science and Engineering Applications
Publisher: ASME
Article Type: Technical Briefs
J. Thermal Sci. Eng. Appl. September 2014, 6(3): 034501.
Paper No: TSEA-13-1009
https://doi.org/10.1115/1.4026490
Published Online: March 17, 2014
View Article titled, Experimental Study on Convective Heat Transfer Performance of Iron Oxide Based Ferrofluids in Microtubes
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Topics: Convection, Ferrofluids, Flow (Dynamics), Heat transfer, Nanoparticles, Iron, Heat transfer coefficients, Temperature
Proceedings Papers

Heat Transfer Enhancement With Iron Oxide Nanoparticle Based Ferrofluids

Evrim Kurtoglu, Alihan Kaya, Devrim Gözüaçık, Havva Funda Yağcı Acar, Ali Kosar
Proc. ASME. ICNMM2013, ASME 2013 11th International Conference on Nanochannels, Microchannels, and Minichannels, V001T02A005, June 16–19, 2013
Publisher: American Society of Mechanical Engineers
Paper No: ICNMM2013-73146
https://doi.org/10.1115/ICNMM2013-73146
View Paper titled, Heat Transfer Enhancement With Iron Oxide Nanoparticle Based Ferrofluids
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Topics: Ferrofluids, Heat transfer, Iron, Nanoparticles, Convection, Nanofluids, Particulate matter, Flow (Dynamics), Fluids, Flux (Metallurgy)