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Proceedings Papers

Investigations of the Unsteady Aerodynamic Characteristics for Intakes at Crosswind

Tommaso Piovesan, Zhang Wenqiang, Mehdi Vahdati, Pavlos K. Zachos

Proc. ASME. GT2022, Volume 10C: Turbomachinery — Design Methods and CFD Modeling for Turbomachinery; Ducts, Noise, and Component Interactions, V10CT33A009, June 13–17, 2022

Paper No: GT2022-82149

DOI: https://doi.org/10.1115/GT2022-82149

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Topics: Computational fluid dynamics, Ducts, Engineering simulation, Flow (Dynamics), Separation (Technology), Simulation, Stability, Steady state, Unsteady flow, Vibration

Proceedings Papers

Assessing the Potential of Gas-Recuperation in Reheated Gas Turbines Within Combined Gas-Steam Power Plants

Adam Doligalski, Luis Sanchez de Leon, Pavlos K. Zachos, Vassilios Pachidis

Proc. ASME. GT2014, Volume 3A: Coal, Biomass and Alternative Fuels; Cycle Innovations; Electric Power; Industrial and Cogeneration, V03AT07A031, June 16–20, 2014

Paper No: GT2014-27048

DOI: https://doi.org/10.1115/GT2014-27048

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Topics: Gas turbines, Power stations, Steam, Combined cycle power stations, Combined cycles, Cycles, Design, Thermal efficiency, Energy / power systems, Engines

Proceedings Papers

A Comparative Assessment of Dry Gas Turbine Cycles for Marine Applications

Luis Sanchez de Leon, Pavlos K. Zachos, Vassilios Pachidis

Proc. ASME. GT2013, Volume 5A: Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine; Microturbines, Turbochargers, and Small Turbomachines, V05AT22A005, June 3–7, 2013

Paper No: GT2013-95321

DOI: https://doi.org/10.1115/GT2013-95321

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Topics: Cycles, Gas turbines, Design, Power stations, Optimization, Ships, Stress, Thermal efficiency

Proceedings Papers

Considerations on the Compression System Preliminary Design of a Short Haul Aircraft Propulsion System

Giovanni Piscopo, Pavlos K. Zachos, Pericles Pilidis

Proc. ASME. GT2013, Volume 4: Ceramics; Concentrating Solar Power Plants; Controls, Diagnostics and Instrumentation; Education; Electric Power; Fans and Blowers, V004T08A010, June 3–7, 2013

Paper No: GT2013-95749

DOI: https://doi.org/10.1115/GT2013-95749

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Topics: Aircraft propulsion, Compression, Design, Compressors, Aircraft, Computer software, Engines, NASA, Propulsion systems, Temperature

Proceedings Papers

Probabilistic and Numerical Modelling of a Lobed Mixer at Windmilling Conditions

Maxime Lecoq, Nicholas Grech, Pavlos K. Zachos, Vassilios Pachidis

Proc. ASME. GT2013, Volume 2: Aircraft Engine; Coal, Biomass and Alternative Fuels; Cycle Innovations, V002T07A006, June 3–7, 2013

Paper No: GT2013-94366

DOI: https://doi.org/10.1115/GT2013-94366

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Topics: Computer simulation, Cycles, Design, Ducts, Engines, Exhaust systems, Flow (Dynamics), Gas turbines, Military systems, Modeling

Proceedings Papers

Axial Compressor Aerodynamics Under Sub-Idle Conditions

Enric Illana, Nicholas Grech, Pavlos K. Zachos, Vassilios Pachidis

Proc. ASME. GT2013, Volume 6A: Turbomachinery, V06AT35A006, June 3–7, 2013

Paper No: GT2013-94368

DOI: https://doi.org/10.1115/GT2013-94368

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Topics: Aerodynamics, Compressors, Flow (Dynamics), Mach number, Rotors, Computer simulation, Design, Engines, Blades, Compression

Proceedings Papers

Considerations on the Numerical Modelling and Performance of Axial Swirlers Under Relight Conditions

Charlie Koupper, Nicholas Grech, Pavlos K. Zachos, Vassilios Pachidis, Riti Singh

Proc. ASME. GT2012, Volume 3: Cycle Innovations; Education; Electric Power; Fans and Blowers; Industrial and Cogeneration, 65-77, June 11–15, 2012

Paper No: GT2012-68416

DOI: https://doi.org/10.1115/GT2012-68416

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Topics: Modeling, Flight, Boundary-value problems, Engines, Mach number, Aircraft engines, Certainty, Combustion chambers, Flames, Regulations

Journal Articles

Considerations on the Numerical Modeling and Performance of Axial Swirlers Under Relight Conditions

Nicholas Grech, Charlie Koupper, Pavlos K. Zachos, Vassilios Pachidis, Riti Singh

J. Eng. Gas Turbines Power. November 2012, 134(11): 111505.

DOI: https://doi.org/10.1115/1.4007132

Published Online: September 28, 2012

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Topics: Computer simulation, Flow (Dynamics), Turbulence, Flames, Swirling flow, Boundary-value problems, Flight, Engineering simulation, Simulation, Pressure drop

Proceedings Papers

Compressor Blade Modelling Under Highly Negative Incedence

Pavlos K. Zachos, Cornelia Ruelke, Vassilios Pachidis, Riti Singh

Proc. ASME. GT2011, Volume 7: Turbomachinery, Parts A, B, and C, 431-441, June 6–10, 2011

Paper No: GT2011-46621

DOI: https://doi.org/10.1115/GT2011-46621

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Topics: Blades, Compressors, Modeling, Design, Engines, Aircraft engines, Combustion chambers, Computational fluid dynamics, Cross section (Physics), Databases

Journal Articles

A Sub-idle Compressor Characteristic Generation Method With Enhanced Physical Background

Pavlos K. Zachos, Ioanna Aslanidou, Vassilios Pachidis, Riti Singh

J. Eng. Gas Turbines Power. August 2011, 133(8): 081702.

DOI: https://doi.org/10.1115/1.4002820

Published Online: April 7, 2011

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Topics: Compressors, Flow (Dynamics), Blades, Pressure, Rotors, Torque

Proceedings Papers

A Physically Enhanced Method for Sub-Idle Compressor Map Generation and Representation

Ioanna Aslanidou, Pavlos K. Zachos, Vassilios Pachidis, Riti Singh

Proc. ASME. GT2010, Volume 3: Controls, Diagnostics and Instrumentation; Cycle Innovations; Marine, 899-908, June 14–18, 2010

Paper No: GT2010-23562

DOI: https://doi.org/10.1115/GT2010-23562

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Topics: Compressors, Engines, Design, Interpolation, Blades, Gas turbines, Geometry, Numerical analysis, Regulations, Rotors

Proceedings Papers

Effects of the Swirl Velocity of a Jet in Crossflow From Fan Assemblies Mounted on Lifting Surfaces

Alexandros Terzis, Charilaos Kazakos, Nikolaos Papadopoulos, Anestis I. Kalfas, Pavlos K. Zachos, Pericles Pilidis

Proc. ASME. GT2010, Volume 3: Controls, Diagnostics and Instrumentation; Cycle Innovations; Marine, 831-842, June 14–18, 2010

Paper No: GT2010-23357

DOI: https://doi.org/10.1115/GT2010-23357

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Topics: Aircraft, Angular momentum, Cooling, Cross-flow, Electromagnetic induction, Engineering systems and industry applications, Fans, Film cooling, Flight, Fluids

Journal Articles

Effects of Swirl Velocities From Fan Assemblies Mounted on Lifting Surfaces

Alexandros Terzis, Charilaos Kazakos, Nikolaos Papadopoulos, Anestis Kalfas, Pavlos K. Zachos, Pericles Pilidis

J. Eng. Gas Turbines Power. March 2011, 133(3): 031702.

DOI: https://doi.org/10.1115/1.4002099

Published Online: November 11, 2010

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Topics: Aircraft, Blades, Cooling, Fans, Film cooling, Flow (Dynamics), Fluids, Jets, Kidney, Rotation

Proceedings Papers

Flowfield Investigation of a Compressor Cascade at High Incidence—Part 1: Pneumatic Probe Measurements

Pavlos K. Zachos, Vassilios Pachidis, Bernard Charnley, Pericles Pilidis

Proc. ASME. GT2009, Volume 4: Cycle Innovations; Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine, 345-354, June 8–12, 2009

Paper No: GT2009-59906

DOI: https://doi.org/10.1115/GT2009-59906

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Topics: Cascades (Fluid dynamics), Compressors, Probes, Blades, Flow (Dynamics), Pressure, Design, Testing, Axial flow, Data acquisition

Proceedings Papers

Flowfield Investigation of a Compressor Cascade at High Incidence—Part 2: Numerical Analysis

Pavlos K. Zachos, Fabio Pengue, Vassilios Pachidis, Pericles Pilidis

Proc. ASME. GT2009, Volume 4: Cycle Innovations; Industrial and Cogeneration; Manufacturing Materials and Metallurgy; Marine, 355-362, June 8–12, 2009

Paper No: GT2009-59908

DOI: https://doi.org/10.1115/GT2009-59908

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Topics: Cascades (Fluid dynamics), Compressors, Numerical analysis, Blades, Computational fluid dynamics, Design, Testing, Axial flow, Boundary-value problems, Flow (Dynamics)

Journal citation

NARROW

Investigations of the Unsteady Aerodynamic Characteristics for Intakes at Crosswind

Assessing the Potential of Gas-Recuperation in Reheated Gas Turbines Within Combined Gas-Steam Power Plants

A Comparative Assessment of Dry Gas Turbine Cycles for Marine Applications

Considerations on the Compression System Preliminary Design of a Short Haul Aircraft Propulsion System

Probabilistic and Numerical Modelling of a Lobed Mixer at Windmilling Conditions

Axial Compressor Aerodynamics Under Sub-Idle Conditions

Considerations on the Numerical Modelling and Performance of Axial Swirlers Under Relight Conditions

Considerations on the Numerical Modeling and Performance of Axial Swirlers Under Relight Conditions

Compressor Blade Modelling Under Highly Negative Incedence

A Sub-idle Compressor Characteristic Generation Method With Enhanced Physical Background

A Physically Enhanced Method for Sub-Idle Compressor Map Generation and Representation

Effects of the Swirl Velocity of a Jet in Crossflow From Fan Assemblies Mounted on Lifting Surfaces

Effects of Swirl Velocities From Fan Assemblies Mounted on Lifting Surfaces

Flowfield Investigation of a Compressor Cascade at High Incidence—Part 1: Pneumatic Probe Measurements

Flowfield Investigation of a Compressor Cascade at High Incidence—Part 2: Numerical Analysis

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