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Shinichi Ookawara
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Proceedings Papers

Performance Improvement of Savonius-Type Hydrokinetic Turbine With Bucket Airfoil Profile

Shehab Osama, Mohamed Emam, Shinichi Ookawara, Mahmoud Ahmed
Proc. ASME. GT2023, Volume 14: Wind Energy, V014T37A010, June 26–30, 2023
Publisher: American Society of Mechanical Engineers
Paper No: GT2023-103209
https://doi.org/10.1115/GT2023-103209
View Paper titled, Performance Improvement of Savonius-Type Hydrokinetic Turbine With Bucket Airfoil Profile
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Topics: Airfoils, Hydraulic turbines, Savonius wind turbines
Proceedings Papers

The Potential and Limitations of Using Geothermal-Sourced Chiller Plants to Eliminate Cooling Towers

Ahmed Farag, Mahmoud Ahmed, Shinichi Ookawara, Mohamed Emam
Proc. ASME. IMECE2022, Volume 6: Energy, V006T08A030, October 30–November 3, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2022-96657
https://doi.org/10.1115/IMECE2022-96657
View Paper titled, The Potential and Limitations of Using Geothermal-Sourced Chiller Plants to Eliminate Cooling Towers
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Topics: Cooling towers, Geothermal engineering, Heat exchangers
Proceedings Papers

Is the Blood Flow Laminar or Turbulent at Stenosed Coronary Artery?

Muhamed Albadawi, Yasser Abuouf, Samir Elsagheer, Hidetoshi Sekiguchi, Shinichi Ookawara, Mahmoud Ahmed
Proc. ASME. IMECE2022, Volume 4: Biomedical and Biotechnology; Design, Systems, and Complexity, V004T05A032, October 30–November 3, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2022-95594
https://doi.org/10.1115/IMECE2022-95594
View Paper titled, Is the Blood Flow Laminar or Turbulent at Stenosed Coronary Artery?
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Topics: Blood flow, Coronary arteries, Flow (Dynamics), Turbulence
Proceedings Papers

Non-Newtonian Blood Flow in a Diseased Abdominal Aortic Arterial Segment Under the Effect of an External Magnetic Field: A Numerical Study

Ahmed Elhanafy, Yasser Abuouf, Shinichi Ookawara, Mahmoud Ahmed
Proc. ASME. IMECE2022, Volume 4: Biomedical and Biotechnology; Design, Systems, and Complexity, V004T05A029, October 30–November 3, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2022-95336
https://doi.org/10.1115/IMECE2022-95336
View Paper titled, Non-Newtonian Blood Flow in a Diseased Abdominal Aortic Arterial Segment Under the Effect of an External Magnetic Field: A Numerical Study
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Topics: Aneurysms, Blood flow, Magnetic fields, Non-Newtonian fluids, Shear stress, Blood, Computer simulation, Flow (Dynamics), Hemodynamics, Magnetic resonance imaging
Proceedings Papers

Numerical Simulation of Aggregation and Deformation of Red Blood Cells in Microchannels With Different Stenosis Severities

Ahmed Elhanafy, Yasser Abuouf, Samir Elsagheer, Shinichi Ookawara, Mahmoud Ahmed
Proc. ASME. IMECE2022, Volume 4: Biomedical and Biotechnology; Design, Systems, and Complexity, V004T05A030, October 30–November 3, 2022
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2022-95360
https://doi.org/10.1115/IMECE2022-95360
View Paper titled, Numerical Simulation of Aggregation and Deformation of Red Blood Cells in Microchannels With Different Stenosis Severities
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Topics: Computer simulation, Deformation, Erythrocytes, Lattice Boltzmann methods, Microchannels, Blood flow, Modeling, Blood, Cardiovascular system, Cell membranes
Proceedings Papers

An Experimental Investigation Onto the Effect of Two Design Methods of Leading-Edge Tubercles on the Aerodynamic Performance of a High Lift Airfoil at Low Reynolds Number

Amr A. Khedr, Ihab Adam, Shinichi Ookawara, Ahmed El-Wardany, Hamdy Hassan
Proc. ASME. IMECE2021, Volume 4: Advances in Aerospace Technology, V004T04A007, November 1–5, 2021
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2021-70292
https://doi.org/10.1115/IMECE2021-70292
View Paper titled, An Experimental Investigation Onto the Effect of Two Design Methods of Leading-Edge Tubercles on the Aerodynamic Performance of a High Lift Airfoil at Low Reynolds Number
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Topics: Airfoils, Design methodology, Flow control, Reynolds number, Wind turbines
Journal Articles

Influence of Varying the Stage Aspect Ratio on the Performance of Multi-Stage Savonius Wind Rotors

Ahmed S. Saad, Shinichi Ookawara, Mahmoud Ahmed
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. January 2022, 144(1): 011301.
Paper No: JERT-21-1033
https://doi.org/10.1115/1.4050876
Published Online: May 6, 2021
View Article titled, Influence of Varying the Stage Aspect Ratio on the Performance of Multi-Stage Savonius Wind Rotors
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Topics: Rotors, Savonius wind turbines, Torque
Proceedings Papers

A Numerical Study Into the Influence of Leading Edge Tubercles on the Aerodynamic Performance of a Highly Cambered High Lift Airfoil Wing at Different Reynolds Numbers

Amr Abdelrahman, Amr Emam, Ihab Adam, Hamdy Hassan, Shinichi Ookawara, Ahmed El-wardany
Proc. ASME. IMECE2020, Volume 4: Advances in Aerospace Technology, V004T04A001, November 16–19, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2020-23634
https://doi.org/10.1115/IMECE2020-23634
View Paper titled, A Numerical Study Into the Influence of Leading Edge Tubercles on the Aerodynamic Performance of a Highly Cambered High Lift Airfoil Wing at Different Reynolds Numbers
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Topics: Airfoils, Flow control, Reynolds number, Wings
Proceedings Papers

Influence of Carotid Artery Stenosis Location on Lesion Progression Using Computational Fluid Dynamics

Muhamed Albadawi, Yasser Abuouf, Shinichi Ookawara, Mahmoud Ahmed
Proc. ASME. IMECE2020, Volume 5: Biomedical and Biotechnology, V005T05A031, November 16–19, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2020-23451
https://doi.org/10.1115/IMECE2020-23451
View Paper titled, Influence of Carotid Artery Stenosis Location on Lesion Progression Using Computational Fluid Dynamics
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Topics: Atherosclerosis, Carotid arteries, Computational fluid dynamics
Proceedings Papers

Effect of the Number of Stages on the Performance of Savonius Vertical Axis Wind Turbines: Part I — Using Straight Semicircular Blades

Ahmed S. Saad, Shinichi Ookawara, Ahmed Elwardany, Ibrahim I. El-Sharkawy, Mahmoud Ahmed
Proc. ASME. IMECE2020, Volume 10: Fluids Engineering, V010T10A058, November 16–19, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2020-23555
https://doi.org/10.1115/IMECE2020-23555
View Paper titled, Effect of the Number of Stages on the Performance of Savonius Vertical Axis Wind Turbines: Part I — Using Straight Semicircular Blades
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Topics: Blades, Rotors, Savonius wind turbines, Vertical axis wind turbines
Proceedings Papers

Effect of the Number of Stages on the Performance of Savonius Vertical Axis Wind Turbines: Part II — Using Twisted Blades

Ahmed S. Saad, Shinichi Ookawara, Ahmed Elwardany, Ibrahim I. El-Sharkawy, Mahmoud Ahmed
Proc. ASME. IMECE2020, Volume 10: Fluids Engineering, V010T10A059, November 16–19, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2020-23574
https://doi.org/10.1115/IMECE2020-23574
View Paper titled, Effect of the Number of Stages on the Performance of Savonius Vertical Axis Wind Turbines: Part II — Using Twisted Blades
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Topics: Blades, Rotors, Savonius wind turbines, Vertical axis wind turbines
Proceedings Papers

Assessment of Invasive Fractional Flow Reserve Procedures Using Computational Fluid Dynamics

Yasser Abuouf, Muhamed Albadawi, Shinichi Ookawara, Mahmoud Ahmed
Proc. ASME. IMECE2020, Volume 5: Biomedical and Biotechnology, V005T05A030, November 16–19, 2020
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2020-23401
https://doi.org/10.1115/IMECE2020-23401
View Paper titled, Assessment of Invasive Fractional Flow Reserve Procedures Using Computational Fluid Dynamics
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Topics: Computational fluid dynamics, Flow (Dynamics)
Journal Articles

Carbon Dioxide Bubbles Removal by Capillary Actuation in the Anode Channel of Direct Methanol Fuel Cells

Sameer Osman, Shinichi Ookawara, Mahmoud Ahmed
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Research Papers
J. Energy Resour. Technol. September 2021, 143(9): 090903.
Paper No: JERT-20-1792
https://doi.org/10.1115/1.4049288
Published Online: January 15, 2021
View Article titled, Carbon Dioxide Bubbles Removal by Capillary Actuation in the Anode Channel of Direct Methanol Fuel Cells
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Topics: Anodes, Bubbles, Carbon dioxide, Diffusion (Physics), Direct methanol fuel cells, Flow (Dynamics), Methanol
Proceedings Papers

Developing an Optimum Design of the Double Layer Microchannel Heat Sink for High Speed CPUs

Ali Radwan, Essam M. Abo-Zahhad, O. Abdelrehim, A. H. El-Shazly, Shinichi Ookawara, M. M. Awad, M. F. El-Kady, Mohamed R. Elmarghany, Mohamed S. Salem, Mahmoud A. Shouman
Proc. ASME. ICNMM2020, ASME 2020 18th International Conference on Nanochannels, Microchannels, and Minichannels, V001T04A001, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: ICNMM2020-1005
https://doi.org/10.1115/ICNMM2020-1005
View Paper titled, Developing an Optimum Design of the Double Layer Microchannel Heat Sink for High Speed CPUs
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Topics: Design, Heat sinks, Microchannels, Flow (Dynamics), Temperature, Computational fluid dynamics, Coolants, Heat, Simulation, Cooling
Proceedings Papers

Four Compartments Stepwise Varied Width Microchannels Cooling Approach for Densely-Packed Module of Concentration Photovoltaics

Essam M. Abo-Zahhad, A. H. El-Shazly, Shinichi Ookawara, M. F. El-Kady, Abdallah Y. M. Ali, Hesham I. Elqady, Mohamed R. Elmarghany, Mohamed S. Salem, Mahmoud A. Shouman, Ali Radwan
Proc. ASME. ICNMM2020, ASME 2020 18th International Conference on Nanochannels, Microchannels, and Minichannels, V001T04A002, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: ICNMM2020-1006
https://doi.org/10.1115/ICNMM2020-1006
View Paper titled, Four Compartments Stepwise Varied Width Microchannels Cooling Approach for Densely-Packed Module of Concentration Photovoltaics
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Topics: Cooling, Microchannels, Photovoltaics, Heat sinks, Temperature, Solar cells, Flow (Dynamics), Dimensions, Heat, Manifolds
Proceedings Papers

Design and Optimization of Microchannel Heat Sink for Densely Packed High Concentration Solar Cells

Abdallah Y. M. Ali, Essam M. Abo-Zahhad, Ali Radwan, Hesham I. Elqady, M. F. El-Kady, Shinichi Ookawara, A. H. El-Shazly
Proc. ASME. HT2020, ASME 2020 Heat Transfer Summer Conference, V001T11A009, July 13–15, 2020
Publisher: American Society of Mechanical Engineers
Paper No: HT2020-9097
https://doi.org/10.1115/HT2020-9097
View Paper titled, Design and Optimization of Microchannel Heat Sink for Densely Packed High Concentration Solar Cells
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Topics: Design, Geometry, Heat sinks, Microchannels, Optimization, Solar cells
Proceedings Papers

Effect of Anode Flow Channel Design on the Carbon Dioxide Bubble Removal in Direct Methanol Fuel Cells

Sameer Osman, Shinichi Ookawara, Mahmoud Ahmed
Proc. ASME. ES2020, ASME 2020 14th International Conference on Energy Sustainability, V001T05A003, June 17–18, 2020
Publisher: American Society of Mechanical Engineers
Paper No: ES2020-1659
https://doi.org/10.1115/ES2020-1659
View Paper titled, Effect of Anode Flow Channel Design on the Carbon Dioxide Bubble Removal in Direct Methanol Fuel Cells
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Topics: Anodes, Bubbles, Carbon dioxide, Design, Direct methanol fuel cells, Flow (Dynamics)
Proceedings Papers

Influence of Fractional Flow Reserve Setting on the Procedure Precision

Yasser Abuouf, Shinichi Ookawara, Mahmoud Ahmed
Proc. ASME. IMECE2019, Volume 3: Biomedical and Biotechnology Engineering, V003T04A034, November 11–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2019-10427
https://doi.org/10.1115/IMECE2019-10427
View Paper titled, Influence of Fractional Flow Reserve Setting on the Procedure Precision
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Topics: Flow (Dynamics)
Proceedings Papers

Enhancing Fractional Flow Reserve Procedure in Stenosis Diagnosis

Yasser Abuouf, Shinichi Ookawara, Mahmoud Ahmed
Proc. ASME. IMECE2019, Volume 3: Biomedical and Biotechnology Engineering, V003T04A002, November 11–14, 2019
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2019-10425
https://doi.org/10.1115/IMECE2019-10425
View Paper titled, Enhancing Fractional Flow Reserve Procedure in Stenosis Diagnosis
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Topics: Flow (Dynamics)
Proceedings Papers

Performance Analysis of Concentrator Photovoltaic/Microchannel Heat Sink System Using Nanofluid

Ali Radwan, Mohamed M. Awad, Shinichi Ookawara, Mahmoud Ahmed
Proc. ASME. ICNMM2019, ASME 2019 17th International Conference on Nanochannels, Microchannels, and Minichannels, V001T11A001, June 23–26, 2019
Publisher: American Society of Mechanical Engineers
Paper No: ICNMM2019-4256
https://doi.org/10.1115/ICNMM2019-4256
View Paper titled, Performance Analysis of Concentrator Photovoltaic/Microchannel Heat Sink System Using Nanofluid
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Topics: Heat sinks, Microchannels, Nanofluids, Cooling, Ethanol, Flow (Dynamics), Solar cells, Temperature, Circuits, Coolants