Thomas Rendall
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View article: Modeling Aircraft Fuel Jettison Using Smoothed Particle Hydrodynamics on Finite-Volume Meshes
Modeling Aircraft Fuel Jettison Using Smoothed Particle Hydrodynamics on Finite-Volume Meshes Open
Weakly compressible smoothed particle hydrodynamics is used to investigate aircraft fuel jettison using a single-phase model. Fuel simulations are coupled to the aircraft computational fluid dynamics flowfield using cell containment checks…
View article: Incompressible <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si388.svg" display="inline" id="d1e1176"><mml:mi>δ</mml:mi></mml:math>-SPH via artificial compressibility
Incompressible -SPH via artificial compressibility Open
Smoothed particle hydrodynamics using artificial compressibility (ACSPH) is developed, with the inclusion of pressure smoothing terms. Theoretical links between pressure/velocity correction incompressible SPH and artificial compressibility…
View article: Experimental and hydrodynamic methods to determine aqueous dispersion of discontinuous reclaimed carbon fibres
Experimental and hydrodynamic methods to determine aqueous dispersion of discontinuous reclaimed carbon fibres Open
In this study, the dispersion of reclaimed carbon fibres following cost-effective surface treatment is explored with a hydrodynamic fibre moving model, and a practical fibre dispersion effect is investigated through various physical disper…
View article: Artificial compressibility for smoothed particle hydrodynamics using pressure smoothing
Artificial compressibility for smoothed particle hydrodynamics using pressure smoothing Open
The advantages of using artificial compressibility in SPH are explored using a number of test cases, including a hydrostatic column, dam-break and violent sloshing. These benefits include pressure field smoothness by eliminating false acou…
View article: Fuel sloshing-induced effects on the dynamic response of a scaled research wing demonstrator
Fuel sloshing-induced effects on the dynamic response of a scaled research wing demonstrator Open
Fuel sloshing inside aircraft wing tanks is not currently considered as a means of passive loads alleviation due to the lack of maturity of modelling tools and overall understanding of vertical sloshing. In this work, a scaled research win…
View article: Nonlinear Identification of Transient Tank Vertical Sloshing Motions
Nonlinear Identification of Transient Tank Vertical Sloshing Motions Open
In an effort to reduce the fuel burn of commercial jet aircraft, much effort is currently being devoted towards reducing the loads that aircraft experience in-flight due to gusts and turbulence using a range of passive and active methodolo…
View article: Sloshing fluid-structure interaction and induced damping effects: modelling and experimental analysis
Sloshing fluid-structure interaction and induced damping effects: modelling and experimental analysis Open
All aircraft are subjected to dynamics loads resulting from in-flight atmospheric gusts and turbulence, with the resulting stresses determining the sizing, and hence weight, of the resulting structure. There is much interest in studying ac…
View article: Nonlinear damping effects in vertically vibrating systems with violently sloshing liquid
Nonlinear damping effects in vertically vibrating systems with violently sloshing liquid Open
Damping induced by vertically sloshing liquids at large amplitudes is of interest in the understanding of the dynamic response of aircraft wings containing fuel. This work presents the experimental investigation of sloshing-induced damping…
View article: Effect of Fuel Sloshing on the Damping of a Scaled Wing Model—Experimental Testing and Numerical Simulations
Effect of Fuel Sloshing on the Damping of a Scaled Wing Model—Experimental Testing and Numerical Simulations Open
Vertical sloshing of liquid-filled tanks has been shown to induce substantial dissipative effects. Building upon these previous results obtained on simpler sloshing systems, a scaled wing prototype is presented here, equipped with a fuel t…
View article: Effect of Fuel Sloshing on the Damping of a Scaled Wing Model—Experimental Testing and Numerical Simulations
Effect of Fuel Sloshing on the Damping of a Scaled Wing Model—Experimental Testing and Numerical Simulations Open
Vertical sloshing of liquid-filled tanks has been shown to induce substantial dissipative effects. Building upon these previous results obtained on simpler sloshing systems, a scaled wing prototype is presented here, equipped with a fuel t…
View article: INITIAL EXPERIMENTAL ANALYSIS OF DAMPING DUE TO LIQUID SLOSHING IN A SCALED AIRCRAFT WING MODEL
INITIAL EXPERIMENTAL ANALYSIS OF DAMPING DUE TO LIQUID SLOSHING IN A SCALED AIRCRAFT WING MODEL Open
Fuel sloshing inside aircraft wings can potentially increase the net damping of the wing structure. Building upon previous work on simpler sloshing systems, we present a scaled research wing prototype equipped with a fuel tank that allows …
View article: Data driven and model-based vertical sloshing reduced order models for aeroelastic analysis.
Data driven and model-based vertical sloshing reduced order models for aeroelastic analysis. Open
A thorough understanding of the effects of sloshing on aircraft dynamic loads can be exploited for the future design of aircraft to be able to reduce their structural mass. Indeed, the high vertical accelerations caused by the vibrations o…
View article: A spacetime formulation for unsteady aerodynamics with geometry and topology changes
A spacetime formulation for unsteady aerodynamics with geometry and topology changes Open
A spacetime formulation is presented to solve unsteady aerodynamic problems involving large deformation or topological change such as store separation, slat and flap deployment or spoiler deflection. This technique avoids complex CFD meshi…
View article: Efficient aeroelastic wing optimization through a compact aerofoil decomposition approach
Efficient aeroelastic wing optimization through a compact aerofoil decomposition approach Open
Efficient optimization of an aeroelastic wing is presented through multi-disciplinary analysis using low-dimensional modal design variables. Much work in wing optimization has concentrated on high-fidelity surface control, therefore utilis…
View article: Statistical analysis of sloshing-induced dissipative energy across a range of Froude numbers
Statistical analysis of sloshing-induced dissipative energy across a range of Froude numbers Open
Fuel sloshing-induced damping is currently being studied extensively within the EU-funded SLOWD project as a means of passively reducing dynamic loads in aircraft wings. It is of interest to be able to determine which parameters have the g…
View article: Sloshing induced damping in vertically vibrating systems
Sloshing induced damping in vertically vibrating systems Open
All aircraft are subject to a range of loading throughout ground and flight operations, which ultimately define the sizing and weight of the aircraft structure. Active and passive loads alleviation technologies provide an approach to reduc…
View article: Gradient-Limiting Shape Control for Efficient Aerodynamic Optimization
Gradient-Limiting Shape Control for Efficient Aerodynamic Optimization Open
Local shape control methods,such as B-Spline surfaces, are well-conditioned such that they allow high-fidelity design optimisation, however this comes at the cost of degraded optimisation convergence rate as control fidelity is refined due to…
View article: Remanufacturing of Woven Carbon Fibre Fabric Production Waste into High Performance Aligned Discontinuous Fibre Composites
Remanufacturing of Woven Carbon Fibre Fabric Production Waste into High Performance Aligned Discontinuous Fibre Composites Open
The composites industry generates considerable volumes of waste in a wide variety of forms, from the production of by-products to end-of-life parts. This paper focuses on the remanufacturing of dry fibre off-cuts, produced during the compo…
View article: Quasi-Isotropic and Pseudo-Ductile Highly Aligned Discontinuous Fibre Composites Manufactured with the HiPerDiF (High Performance Discontinuous Fibre) Technology
Quasi-Isotropic and Pseudo-Ductile Highly Aligned Discontinuous Fibre Composites Manufactured with the HiPerDiF (High Performance Discontinuous Fibre) Technology Open
Conventional composite materials reinforced with continuous fibres display high specific strength but have a number of drawbacks including: the elastic-brittle behaviour, difficulties in producing defect-free components of complex shape wi…
View article: Restricted snakes volume of solid (RSVS): A parameterisation method for topology optimisation of external aerodynamics
Restricted snakes volume of solid (RSVS): A parameterisation method for topology optimisation of external aerodynamics Open
An approach for aerodynamic shape optimisation is derived which is capable of handling topological design changes as well as detailed surface control. The technique applies a material distribution, or volume of solid approach where design …
View article: Wing aerodynamic optimization using efficient mathematically-extracted modal design variables
Wing aerodynamic optimization using efficient mathematically-extracted modal design variables Open
Aerodynamic shape optimization of a transonic wing using mathematically-extracted modal design variables is presented. A novel approach is used for deriving design variables using a singular value decomposition of a set of training aerofoi…
View article: Multilevel Subdivision Parameterization Scheme for Aerodynamic Shape Optimization
Multilevel Subdivision Parameterization Scheme for Aerodynamic Shape Optimization Open
Subdivision curves are defined as the limit of a recursive application of a subdivision rule to an initial set of control points. This intrinsically provides a hierarchical set of control polygons that can be used to provide surface contro…
View article: Optimisation using smoothed particle hydrodynamics with volume-based geometry control
Optimisation using smoothed particle hydrodynamics with volume-based geometry control Open
This work explores how smoothed particle hydrodynamics (SPH) may be applied for fluids optimisation problems. To achieve this, a newly developed volume of solid geometric parameterisation is applied that implicitly allows large geometric c…
View article: Acoustic Reflectometry for Pitot Tube Blockage Detection
Acoustic Reflectometry for Pitot Tube Blockage Detection Open
Experimental and numerical acoustic results for Pitot tubes are presented to explore the theoretical basis for an acoustic blockage-detection system. Three Pitot-statics from two different commerci...
View article: Geometric Comparison of Aerofoil Shape Parameterization Methods
Geometric Comparison of Aerofoil Shape Parameterization Methods Open
A comprehensive review of aerofoil shape parameterisation methods that can be used for aerodynamic shape optimisation is presented. Seven parameterisation methods are considered for a range of design variables: CSTs; B-Splines; Hicks-Henne…