Browsing Staff publications (SATM) by Author "Zachos, Pavlos"

Browsing Staff publications (SATM) by Author "Zachos, Pavlos"

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  • An assessment on the unsteady flow distortion generated by an S-duct intake 
    Migliorini, Matteo; Zachos, Pavlos; MacManus, David G. (AIAA, 2019-08-16)
    Closer integration between the fuselage and the propulsion system is expected for futureaircraft toreducefuel consumption, emissions, weight and drag. The use of embedded or partially embedded propulsion systems may require ...
  • Computational design optimization for S-ducts 
    D’Ambros, Alessio; Kipouros, Timoleon; Zachos, Pavlos; Savill, Mark; Benini, Ernesto (MDPI, 2018-10-12)
    In this work, we investigate the computational design of a typical S-Duct that is found in the literature. We model the design problem as a shape optimization study. The design parameters describe the 3D geometrical changes ...
  • Development of an experimental S-CO2 loop for bottoming cycle applications 
    Anselmi, Eduardo; Zachos, Pavlos; Collins, Robert; Hassan, Mark (Unknown, 2016-10-11)
    This paper describes the design of a supercritical carbon dioxide [S-CO2] rig for bottoming power cycle applications. The final envisaged layout of the facility includes a fully coupled compressor-turbine system, a number ...
  • The impact of inlet boundary layer thickness on the unsteady aerodynamics of S-duct intakes 
    Migliorini, Matteo; Zachos, Pavlos; MacManus, David G. (AIAA, 2019-09-16)
    The need to reduce aero-engine emissions and direct operating costsis driving the civil aerospace sectortowards considering more integrated propulsion systems. Many of the proposed novel aircraft architectures employ ...
  • An overview of the Rolls-Royce sCO2-test rig project at Cranfield University 
    Anselmi, Eduardo; Bunce, Ian; Pachidis, Vassilios; Zachos, Pavlos; Johnston, Michael (Southwest Research Institute, 2018-04-08)
    An experimental facility is currently under development at Cranfield University, aiming to explore supercritical carbon dioxide as a working fluid for future bottoming power cycle applications for Rolls- Royce. The initial ...
  • Parametric evaluation of S-CO2 Brayton cycles for bottoming applications 
    Brighenti, Giovanni; Anselmi, Eduardo; Zachos, Pavlos (2016-10-11)
    Parametric design studies for the preliminary assessment of physical footprint of Supercritical CO2 power plants are presented herein. The aim of the study is to quantify trade-offs between cycle efficiency and plant ...
  • Unsteady swirl distortion characteristics for S-ducts using Lattice Boltzmann and time-resolved, stereo PIV methods 
    Guerrero-Hurtado, Manuel; Zachos, Pavlos; MacManus, David G.; Migliorini, Matteo; Trapani, Giuseppe (AIAA, 2019-08-16)
    The unsteady flowfields generated by convoluted aero engine intakes are major sources of instabilities that can compromise the performance of the downstream turbomachinery components. This highlights theneed for high spatial ...

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