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Taher Halawa
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Journal Articles

Numerical and Experimental Investigation of the Performance of a Vertical Axis Wind Turbine Based on the Magnetic Levitation Concept

Taher Halawa
Journal: Journal of Energy Resources Technology
Publisher: ASME
Article Type: Technical Briefs
J. Energy Resour. Technol. September 2022, 144(9): 094502.
Paper No: JERT-21-1284
https://doi.org/10.1115/1.4053577
Published Online: February 16, 2022
View Article titled, Numerical and Experimental Investigation of the Performance of a Vertical Axis Wind Turbine Based on the Magnetic Levitation Concept
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Topics: Design, Generators, Magnetic levitation, Magnets, Rotors, Wind turbines, Stators, Turbines, Vertical axis wind turbines, Magnetic fields
Journal Articles

Numerical Investigation of Smoke Propagation in Road Tunnels Caused by a Burned Truck

Taher Halawa
Journal: ASME Journal of Engineering for Sustainable Buildings and Cities
Publisher: ASME
Article Type: Research Papers
J. Eng. Sustain. Bldgs. Cities. February 2021, 2(1): 011003.
Paper No: JESBC-20-1005
https://doi.org/10.1115/1.4048974
Published Online: November 23, 2020
View Article titled, Numerical Investigation of Smoke Propagation in Road Tunnels Caused by a Burned Truck
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Topics: Fire, Smoke, Trucks, Tunnels, Ventilation
Journal Articles

On the Use of Solid Curtains Near Smoke Extraction Vents to Control Smoke Spread Resulting From Fire in Road Tunnels

Taher Halawa
Journal: Journal of Thermal Science and Engineering Applications
Publisher: ASME
Article Type: Research Papers
J. Thermal Sci. Eng. Appl. June 2021, 13(3): 031025.
Paper No: TSEA-20-1465
https://doi.org/10.1115/1.4048670
Published Online: November 6, 2020
View Article titled, On the Use of Solid Curtains Near Smoke Extraction Vents to Control Smoke Spread Resulting From Fire in Road Tunnels
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Topics: Fire, Smoke, Tunnels, Vents
Journal Articles

Numerical Simulation of the Evacuation Process and Smoke Propagation Due to a Fire in a Road Tunnel With Transverse Ventilation System

Taher Halawa
Journal: Journal of Thermal Science and Engineering Applications
Publisher: ASME
Article Type: Research Papers
J. Thermal Sci. Eng. Appl. June 2021, 13(3): 031015.
Paper No: TSEA-20-1117
https://doi.org/10.1115/1.4047523
Published Online: October 27, 2020
View Article titled, Numerical Simulation of the Evacuation Process and Smoke Propagation Due to a Fire in a Road Tunnel With Transverse Ventilation System
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Topics: Evacuations, Fire, Smoke, Tunnels
Journal Articles

Optimization of the Efficiency of Stall Control Using Air Injection for Centrifugal Compressors—Additional Findings

Taher Halawa
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Technical Briefs
J. Eng. Gas Turbines Power. December 2018, 140(12): 124501.
Paper No: GTP-18-1074
https://doi.org/10.1115/1.4039820
Published Online: August 9, 2018
View Article titled, Optimization of the Efficiency of Stall Control Using Air Injection for Centrifugal Compressors—Additional Findings
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Topics: Compressors, Diffusers, Optimization, Flow (Dynamics), Kinetic energy, Fluids
Journal Articles

Influence of Changing Casing Groove Parameters on the Performance of Centrifugal Compressors Near Stall Condition

Taher Halawa, Mohamed S. Gadala, Mohamed Alqaradawi, Osama Badr
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. February 2016, 138(2): 021104.
Paper No: FE-15-1050
https://doi.org/10.1115/1.4031311
Published Online: September 10, 2015
View Article titled, Influence of Changing Casing Groove Parameters on the Performance of Centrifugal Compressors Near Stall Condition
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Topics: Blades, Compressors, Computer simulation, Engineering simulation, Flow (Dynamics), Impellers, Pressure, Simulation, Optimization
Journal Articles

Optimization of the Efficiency of Stall Control Using Air Injection for Centrifugal Compressors

Taher Halawa, Mohamed S. Gadala, Mohamed Alqaradawi, Osama Badr
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. July 2015, 137(7): 072604.
Paper No: GTP-14-1513
https://doi.org/10.1115/1.4029169
Published Online: July 1, 2015
View Article titled, Optimization of the Efficiency of Stall Control Using Air Injection for Centrifugal Compressors
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Topics: Compressors, Diffusers, Flow (Dynamics), Fluids, Impellers, Pressure, Computer simulation, Design, Optimization, Blades
Proceedings Papers

Numerical Simulation of Using Combined Active and Passive Stall Control Techniques in Centrifugal Compressors

Taher Halawa, Mohamed Alqaradawi, Osama Badr, Mohamed S. Gadala
Proc. ASME. IMECE2014, Volume 7: Fluids Engineering Systems and Technologies, V007T09A026, November 14–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2014-37983
https://doi.org/10.1115/IMECE2014-37983
View Paper titled, Numerical Simulation of Using Combined Active and Passive Stall Control Techniques in Centrifugal Compressors
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Topics: Compressors, Computer simulation, Flow (Dynamics), Stability, Blades, Flow separation, Impellers, Kinetic energy, Leakage flows, Passive control
Proceedings Papers

Numerical Investigation of Rotating Stall Characteristics and Active Stall Control in Centrifugal Compressors

Taher Halawa, Mohamed Alqaradawi, Osama Badr, Mohamed S. Gadala
Proc. ASME. POWER2014, Volume 2: Simple and Combined Cycles; Advanced Energy Systems and Renewables (Wind, Solar and Geothermal); Energy Water Nexus; Thermal Hydraulics and CFD; Nuclear Plant Design, Licensing and Construction; Performance Testing and Performance Test Codes; Student Paper Competition, V002T11A002, July 28–31, 2014
Publisher: American Society of Mechanical Engineers
Paper No: POWER2014-32052
https://doi.org/10.1115/POWER2014-32052
View Paper titled, Numerical Investigation of Rotating Stall Characteristics and Active Stall Control in Centrifugal Compressors
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Topics: Compressors, Flow (Dynamics), Computer simulation, Delays, Design, Flow separation, Fluids, Impellers, Leakage flows, Stall inception
Proceedings Papers

Numerical Simulation of Stall Development Into Surge and Stall Control Using Air Injection in Centrifugal Compressors

Taher Halawa, Mohamed Alqaradawi, Osama Badr, Mohamed S. Gadala
Proc. ASME. POWER2014, Volume 2: Simple and Combined Cycles; Advanced Energy Systems and Renewables (Wind, Solar and Geothermal); Energy Water Nexus; Thermal Hydraulics and CFD; Nuclear Plant Design, Licensing and Construction; Performance Testing and Performance Test Codes; Student Paper Competition, V002T11A003, July 28–31, 2014
Publisher: American Society of Mechanical Engineers
Paper No: POWER2014-32053
https://doi.org/10.1115/POWER2014-32053
View Paper titled, Numerical Simulation of Stall Development Into Surge and Stall Control Using Air Injection in Centrifugal Compressors
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Topics: Compressors, Computer simulation, Surges, Fluctuations (Physics), Impellers, Flow (Dynamics), Pressure, Blades, Design, Optimization
Proceedings Papers

Numerical Simulation and Control of Rotating Stall in a Transonic Centrifugal Compressor

Taher Halawa, Mohamed Alqaradawi, Osama Badr, Mohamed S. Gadala
Proc. ASME. ESDA2014, Volume 2: Dynamics, Vibration and Control; Energy; Fluids Engineering; Micro and Nano Manufacturing, V002T11A024, July 25–27, 2014
Publisher: American Society of Mechanical Engineers
Paper No: ESDA2014-20589
https://doi.org/10.1115/ESDA2014-20589
View Paper titled, Numerical Simulation and Control of Rotating Stall in a Transonic Centrifugal Compressor
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Topics: Compressors, Computer simulation, Impellers, Diffusers, Blades, Fluids, Stall inception, Flow (Dynamics), Fluctuations (Physics), Leakage flows
Proceedings Papers

Numerical Investigation of Steady Air Injection Flow to Control Rotating Stall in Centrifugal Compressors

Taher Halawa, Mohamed Alqaradawi, Osama Badr, Mohamed S. Gadala
Proc. ASME. ESDA2014, Volume 2: Dynamics, Vibration and Control; Energy; Fluids Engineering; Micro and Nano Manufacturing, V002T11A025, July 25–27, 2014
Publisher: American Society of Mechanical Engineers
Paper No: ESDA2014-20590
https://doi.org/10.1115/ESDA2014-20590
View Paper titled, Numerical Investigation of Steady Air Injection Flow to Control Rotating Stall in Centrifugal Compressors
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Topics: Compressors, Flow (Dynamics), Diffusers, Fluids, Kinetic energy, Surges, Computer simulation, Design, Impellers