Browsing Mechanical, Manufacturing & Biomedical Eng by Title
Now showing items 876-894 of 894
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A validated numerical-experimental design methodology for a movable supersonic ejector compressor for waste-heat recovery
(2013)The aim of this paper is to develop the technical knowledge, especially the optimum geometries, for the design and manufacturing of a supersonic gas-gas ejecto r for a waste heat driven vehicle cooling system. Although ... -
Validation and Calibration of Conceptual Design Tool SUAVE
(2023)The aim of this study is to provide a comprehensive validation of the conceptual design tool SUAVE, with respect to real world flight data from an extensive flight database of 737- 800NG fleet operations. A validation of ... -
Validation of numerical methods in cold spray by direct nozzle-internal measurements of non-dilute particle motion
(Trinity College Dublin. School of Engineering. Discipline of Mechanical & Manuf. Eng, 2018)This work presents the research conducted during the development of a new optical particle velocity measurement in the field of Cold Spray. Cold Spray is a process for surface coating formation and additive manufacturing, ... -
The Variable Radius Notch: Two New Methods for Reducing Stress Concentration
(2011)Geometrical features such as notches and corners give rise to stress concentrations. In industrial components these features are often designed with a constant radius, however it is already known that a more complex shape, ... -
Vehicle pedestrian collisions: Validated models for pedestrian Impact and Projection
(Sage, 2005)The most important factor in pedestrian injuries from vehicle collisions is the impact velocity. In cases where the impact configuration can be ascertained, the most common method now used to determine vehicle speed ... -
Veins improve fracture toughness of insect wings
(2012)During the lifetime of a flying insect, its wings are subjected to mechanical forces and deformations for millions of cycles. Defects in the micrometre thin membranes or veins may reduce the insect's flight performance. ... -
Vertical Upflow Convective Boiling: Flow Regimes, Heat Transfer and EHD Augmentation
(Trinity College Dublin. School of Engineering. Discipline of Mechanical & Manuf. Eng, 2018)This work focuses on vertical upflow convective boiling in a tubular heat exchanger. The work is experimental and utilizes a novel transparent sapphire test section coated with a transparent film of ITO. This allows ... -
Very large fMRI study using the IMAGEN database: sensitivity - specificity and population effect modelling in relation to the underlying anatomy
(2012)In this paper we investigate the use of classical fMRI Random Effect (RFX) group statistics when analysing a very large cohort and the possible improvement brought from anatomical information. Using 1326 subjects from the ... -
Viscoelastic properties of passive skeletal muscle in compression: cyclic behaviour
(2009)The compressive properties of skeletal muscle are important in impact biomechanics, rehabilitation engineering and surgical simulation. However, the mechanical behaviour of muscle tissue in compression remains poorly ... -
Vortex shedding from a wind turbine blade section at high angles of attack
(2013)The unsteady flow around a stationary two-dimensional wind turbine blade section (NREL S809) has been simulated using unsteady RANS with the SST turbulence model at Re = 106 and high angles of attack. Vortex shedding ... -
Vortex shedding lock-in due to pitching oscillation of a wind turbine blade section at high angles of attack
(2019)The unsteady flow around a pitching two-dimensional airfoil section (NREL S809) has been simulated using unsteady RANS with the transition SST turbulence model. This geometry is chosen to represent a wind turbine blade in ... -
Vortex shedding lock-in of a 2-D wind turbine blade section at high angles of attack
(Trinity College (Dublin, Ireland). Department of Mechanical and Manufacturing Engineering, 2015)The vortex shedding behaviour of a 2-D wind turbine blade section at high angles of attack (a = [35° —>145°]) has been investigated using unsteady RANS with the transition SST turbulence model. The Reynolds number is Re = ... -
Water droplet evaporation in varied gravity and electric fields
(2024)Sessile water droplet evaporation in varied gravity and electric fields has been experimentally studied. Specifically, the influences of gravity and electric fields are investigated in the context of the heat flux distribution ... -
Wear of grinding wheels - software for their selection
(2004)An existing model of the grinding process has been upgraded to predict grinding wheel wear as G ratios. It has been successfully benchmarked against experimental results for several combinations of coolant wheel and ... -
What we can't learn from nature
(2011)When attempting to design bio-inspired materials and structures, it is important to remember that Nature employs some strategies for optimising the use of load-bearing materials which we, as engineers, cannot replicate. A ... -
"Who said that?" Applying the Situation Awareness Global Assessment Technique to Social Telepresence
(2023)As with all remotely-controlled robots, successful teleoperation of social and telepresence robots relies greatly on operator situation awareness, however existing situation awareness measurements, most being originally ... -
Wide Range Performance Measurement and Low-Fidelity Modelling of Turbocharger Turbines for Optimising Powertrain Efficiency
(Trinity College Dublin. School of Engineering. Discipline of Mechanical & Manuf. Eng, 2024)Turbochargers have been widely used for many years and have made remarkable contributions in reducing the vehicle emissions by reducing the engine size while maintaining the same power output. They are also needed in designs ...
