Sort by: Order: Results:

Now showing items 1-20 of 20

  • Aeroacoustic Noise Source Identification Using Irregularly Sampled LDV Measurements Coupled with Beamforming 

    BENNETT, GARETH; Garcia-Pedroche, Miguel (American Institute of Aeronautics and Astronautics, 2011)
    This paper develops a technique which relates dynamic pressure measurements taken outside the hydrodynamic eld of a low speed jet to single point, one component velocity measurements taken within the jet using a Laser ...
  • Broadband Noise Source Location in Turbomachinery using a Conditioned Spectral Analysis Technique Coupled with Modal Decomposition 

    BENNETT, GARETH (2010)
    Methods are presented for the identification, viz., relative magnitude and spatial origin, of broadband and tonal noise sources within aeroengines. The methods require dynamic pressure measurements from sensors located ...
  • Design Projects in Undergraduate Engineering 

    BENNETT, GARETH (2010-04-27)
    Design has been extensively embedded within the undergraduate Engineering programmes through a restructuring of the curriculum to increase small group, project based learning. Complementing this strategy, a selection of ...
  • Development of a gait training device for children with cerebral palsy 

    BENNETT, GARETH; O'DONNELL, GARRET EDWARD; SIMMS, CIARAN KNUT (2010-04-27)
    Children with Cerebral Palsy (CP) can generally not walk unaided, but do have some weight bearing ability. Therefore walking aids are often more appropriate than wheelchairs, see figure 1. These devices facilitate mobility ...
  • Environmental noise mapping using measurements in transit 

    KING, EOIN; CAHILL, VINNY; RICE, HENRY JOSEPH; BENNETT, GARETH (2010)
    Due to the ever increasing level of environmental noise that the EU population is exposed to, all countries are directed to disseminate community noise level exposures to the public in accordance with EU Directive ...
  • Heat Transfer Enhancement In Ducts Due To Acoustic Excitation 

    MURRAY, DARINA BRIDGET; BENNETT, GARETH (2009)
    The thermoacoustic effect that results from the interaction of a sound wave in a compressible fluid in contact with solid boundaries is known to be capable of removing heat from power dissipating systems. In this paper ...
  • Implementation of Project Based Learning in a Large Engineering Programme 

    KELLY, KEVIN; MC GOLDRICK, CIARAN SEAMUS; PAVIA, SARA; BOLAND, FRANCIS MORGAN; O'KELLY, KEVIN; BENNETT, GARETH (2010)
    The role of the engineer in industry has evolved, with today?s engineering businesses seeking engineers with abilities and attributes in two broad areas - technical understanding and enabling skills. Institutions within ...
  • Modelling multi-modal sound transmission from point sources in ducts with flow using a wave-based method 

    BENNETT, GARETH (2009)
    An understanding of the multi-modal propagation of acoustic waves in ducts is of practical interest for use in the control of noise in, for example, aero-engines, automotive exhaust and ventilation systems. In this paper, ...
  • Noise Source Identification For Ducted Fan Systems 

    BENNETT, GARETH; FITZPATRICK, JOHN AIDAN (American Institute of Aeronautics and Astronautics, 2007)
    Understanding combustion noise source mechanisms, designing efficient acoustic liners and optimising active control algorithms for noise reduction requires the identification of the frequency and modal content of the ...
  • Noise source identification for ducted fan systems 

    BENNETT, GARETH; FITZPATRICK, JOHN AIDAN (American Institute of Aeronautics and Astronautics, 2008)
    Coherence based source analysis techniques can be used to identify the contribution of combustion noise in the exhaust of a jet engine and hence enable the design of noise reduction devices. However, when the combustion noise ...
  • Noise Source Location in Turbomachinery Using Coherence Based Modal Decomposition 

    BENNETT, GARETH; FITZPATRICK, JOHN AIDAN (2009)
    Coherence based source analysis techniques can be used to identify the contribution of turbomachinery core noise sources to pressure measurements in the far-field. The usual approach is to locate a measurement sensor ...
  • Non-linear Identification Applied to Broadband Turbomachinery Noise 

    FITZPATRICK, JOHN AIDAN; BENNETT, GARETH (2008)
    Coherence based source analysis techniques can be used to identify the contribution of broadband noise sources in the exhaust of a gas turbine and hence enable the design of noise reduction devices. However, when the ...
  • Nonlinear Frequency Scattering of Broadband Noise in Turbomachinery 

    DAVIS, IAN; BENNETT, GARETH (2010)
    Coherence based source analysis techniques can be used to identify the contribution of broadband noise sources in the exhaust of a gas turbine and hence enable the design of noise reduction devices. However, when the ...
  • Nonlinear vibro-acoustic behaviour in a circular membrane oscillator 

    BENNETT, GARETH (2009)
    Oscillating systems that produce noise at a frequency of excitation may have as an abatement solution the increase of the frequency of excitation to above the audible frequency limit, viz. 20kHz. This approach may not ...
  • Open Design and the Reprap Project 

    BENNETT, GARETH; O'DONNELL, GARRET EDWARD (2010)
    This paper details the investigation of an emerging trend within technology development: `open design?. Improvements in communications and computing technology have made collaboration over geographically vast distances ...
  • Shear Layer Driven Acoustic Modes in a Cylindrical Cavity 

    BENNETT, GARETH (American Institute of Aeronautics and Astronautics, 2010)
    Coherence based source analysis techniques can be used to identify the contribution of broadband noise sources in the exhaust of a gas turbine and hence enable the design of noise reduction devices. However, when the ...
  • Shear Layer Dynamics of a Cylindrical Cavity for Different Acoustic Resonance Modes 

    BENNETT, GARETH (2010)
    This paper investigates the interaction between the shear layer over a circular cavity and the flow-excited acoustic response of the volume to shear layer instability modes. Within the fluid-resonant category of cavity ...
  • Technique to Analyze Characteristics of Turbomachinery Broadband Noise Sources 

    BENNETT, GARETH (2010)
    In this paper an experimental technique for the decomposition of broadband ducted sound fields into their mode constituents is applied to two laboratory scale experimental setups. The broadband mode analysis technique ...
  • TEENI-Turboshaft Engine Exhaust Noise Identification 

    BENNETT, GARETH (2010)
    The TEENI project is an FP7 level 1 (Theme 7 ? Transport) 1st Call EU-funded project. It focuses on Helicopter Engine Exhaust Broadband Noise, and tries to identify the origin of this noise from external measurements only. ...
  • To Design a Designer To Design Designs 

    BENNETT, GARETH (Trinity College Dublin, 2008)
    This paper reports on the implementation of a new project based design course at first year level of an engineering degree programme. The project, carried out in groups of six, uses the design and construction of ...