Douglas Carter

Douglas Carter
University of Southampton · Aeronautical & Astronautical Engineering

Doctor of Philosophy

About

8
Publications
1,855
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76
Citations
Introduction
Research interests include the use and development of experimental methods and analysis to address challenges in aerospace and environmental applications that must account for the influence of turbulence.

Publications

Publications (8)
Article
Full-text available
The use of random jet arrays, already employed in water tank facilities to generate zero-mean-flow homogeneous turbulence, is extended to air as a working fluid. A novel facility is introduced that uses two facing arrays of individually controlled jets (256 in total) to force steady homogeneous turbulence with negligible mean flow, shear, and strai...
Thesis
Full-text available
Motivated by the need to substantiate the existing literature on homogeneous turbulence with experimental data, a novel zero-mean homogeneous turbulence chamber is presented. Despite the anisotropy of the large scale velocity fluctuations, the experimental apparatus is found to well approximate homogeneous, shear-less turbulence over scales larger...
Article
Four data-driven low-order modelling approaches, Dynamic mode decomposition (DMD) and three other variations (optimal mode decomposition, total-least-squares DMD and high-order DMD), are used to capture the spatio-temporal evolution of fluid-structure interactions. These methods are applied to experimental data obtained in a flow over a flexible me...
Article
Full-text available
Recent work has demonstrated the use of sparse sensors in combination with the proper orthogonal decomposition (POD) to produce data-driven reconstructions of the full velocity fields in a variety of flows. The present work investigates the fidelity of such techniques applied to a stalled NACA 0012 aerofoil at Re_c = 75000 at an angle of attack alp...
Preprint
Full-text available
We characterise the incompressible turbulence cascade in terms of the concurrent inter-scale and inter-space exchanges of the scale-by-scale energy, helicity and enstrophy. The governing equations for the scale-by-scale helicity and enstrophy are derived in a similar fashion to that of the second order structure function obtained by Hill (2002). We...
Article
The fluid dynamics in the far-field of liquid sprays involves a wide range of spatio-temporal scales; challenging experimental observation and numerical modeling alike. Here we show how a combination of multiple imaging approaches, targeted to different scales, can provide useful insight into this class of flows. We performed multi-scale imaging me...
Article
We use high-resolution velocity measurements in a jet-stirred zero-mean-flow facility to investigate the topology and energy transfer properties of homogeneous turbulence over the Reynolds number range Reλ≈300 –500. The probability distributions of the enstrophy and strain-rate fields show long tails associated with the most intense events, while t...
Article
We experimentally investigate scale-to-scale anisotropy from the integral to the dissipative scales in homogeneous turbulence. We employ an apparatus in which two facing arrays of randomly actuated air jets generate turbulence with negligible mean flow and shear, over a volume several times larger than the energy-containing eddy size. The Reynolds...

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Projects

Projects (3)
Project
To explore the application of data-driven methods in experimental fluid mechanics to reduce measurement noise, detect flow structures, reveal physical mechanisms and reconstruct underlying fluid fields.
Archived project
The goal of this project is to study the behavior of inertial liquid droplets suspended in air for the particular case of when inertia is acting in opposition to gravity.
Project
To connect aspects of the non-linear energy cascade to topological features in turbulence using 2D Particle Image Velocimetry.