Measurement of the dynamics in ski jumping using a wearable inertial sensor-based system

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This thesis explores an instance of Moravec's paradox within the domain of impact-aware non-prehensile manipulation. The specific task investigated here involves interacting with a simple environment through the application of an impulse, or a hit / strike ...

Heat transfer differs in the regions where the flow is developed and developing thermally. These regions can be differentiated by using the thermal entry length. Many researchers have presented correlations to determine the thermal entry length for natural ...

The present invention concerns a method of manoeuvring a vertical take-off and landing, unmanned aerial drone (100) comprising at least an aerodynamic surface (101), wherein, during a flight of the drone, the aerodynamic surface generates lift and/or drag ...

This work focuses on understanding and identifying the drag forces applied to a rotary-wing Micro Aerial Vehicle (MAV). We propose a lumped drag model that concisely describes the aerodynamical forces the MAV is subject to, with a minimal set of parameters ...

Extreme weather events are increasing in frequency in recent years due to global climate change. These events damage infrastructure and pose an open challenge to engineers to design more weather-resistant infrastructure. As engineers, we turn to nature fo ...

Wind tunnel experiments were performed with a miniature floating wind turbine model to study the effects of cyclic pitch motion on its power performance. The cyclic pitch motion was prescribed by two key parameters: pitch frequency and amplitude. The power ...

The interstellar medium in the Milky Way's Central Molecular Zone (CMZ) is known to be strongly magnetised, but its large-scale morphology and impact on the gas dynamics are not well understood. We explore the impact and properties of magnetic fields in th ...

Plasma turbulence plays a fundamental role in determining the performances of magnetic confinement fusion devices, such as tokamaks. Advances in computer science, combined with the development of efficient physical models, have significantly improved our u ...

The prediction of trajectories of buoyancy-driven objects immersed in a viscous fluid is a key problem in fluid dynamics. Simple-shaped objects, such as disks, present a great variety of trajectories, ranging from zig-zag to tumbling and chaotic motions. Y ...

Flight in dense environments, such as forests and cities requires drones to perform sharp turns. Although fixed-wing drones are aerodynamically and energetically more efficient than multicopters, they require a comparatively larger area to turn and thus ar ...

In this thesis, the aerodynamic challenges in flapping wing flight are addressed. In particular, the effects of different wing kinematics, flexibilities, and planforms on the the leading edge vortex development and aerodynamic performance are investigated. ...

Technical evaluation of swimming performance is an essential factor in preparing elite swimmers for their competitions. Inertial measurement units (IMUs) have attracted much attention recently because they can provide coaches with a detailed analysis of sw ...

Molecular dynamics (MD) simulations have emerged as a transformative approach to analyse molecular systems at the atomic level, offering valuable insights into complex biological processes. Many biological phenomena can only accurately be described by inco ...

This paper proposes a novel method to improve georeferencing of airborne laser scanning by improved trajectory estimation using Vehicle Dynamic Model. In Vehicle Dynamic Model (VDM), the relationship between the dynamics of the platform and control inputs ...

We investigate the wake structure and the three-dimensional stability of the two-dimensional von Karman vortex street developing in the wake of a permeable circular cylinder. The flow through the porous medium, assumed homogenous and isotropic, is describe ...

The presence of aerodynamic vortices is widespread in nature. They can be found at small scales near the wing tip of flying insects or at bigger scale in the form of hurricanes, cyclones or even galaxies. They are identified as coherent regions of high vor ...

The perpendicular propagation velocity of turbulent density fluctuations is an important parameter in fusion plasmas, since sheared plasma flows are crucial for reducing turbulence, and thus an essential input parameter for turbulent transport simulations. ...

Tunable metasurfaces can shift their resonant frequency through different approaches, one of which is applying mechanical deformations. Here, we show the effects of two key factors on the tunability of deformable metasurfaces; the resonator geometry and su ...

Accurate predictions of how vortices grow, evolve, and separate from aerodynamic objects are desirable for various applications ranging from autonomous aerial vehicles to wind turbines. Here, we present an experimental characterisation of the formation pro ...

In this thesis several advances are made to the emerging field of 3D printed mechanical sensors. Techniques and processes were developed to enable the integration of highly conductive, and capacitive and piezoresistive sensing features embedded within 3D p ...

Measurement of the dynamics in ski jumping using a wearable inertial sensor-based system

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Leveraging intentional impacts in Non-Prehensile manipulation

Heat transfer in the entrance region of annular laminar flow with constant and different heat flux on two walls

Method for wind harvesting and wind rejection in flying drones

Lumped Drag Model Identification and Real-Time External Force Detection for Rotary-Wing Micro Aerial Vehicles

Drag reduction of flexible disks through vortex ring manipulation

Power performance of a model floating wind turbine subjected to cyclic pitch motion: A wind tunnel study

Magnetic field morphology and evolution in the Central Molecular Zone and its effect on gas dynamics

Nonlinear simulation of plasma turbulence using a gyrokinetic moment-based approach

Permeability sets the linear path instability of buoyancy-driven disks

Sharp turning maneuvers with avian-inspired wing and tail morphing

The effects of kinematics, flexibility, and planform on the vortex formation and aerodynamic performance of flapping wing flight

Monitoring weekly progress of front crawl swimmers using IMU-based performance evaluation goal metrics

Advancing first principle-based molecular dynamics of biological systems with machine learning

Model-based constraints for trajectory determination of quad-copters: Design, calibration & merits for direct orientation

Von Karman vortex street past a permeable circular cylinder. Two-dimensional flow and dynamic-mode-decomposition-based secondary stability analysis

Growth, timing, & trajectory of vortices behind a rotating plate

Impact of the turbulence wavenumber spectrum and probing beam geometry on Doppler reflectometry perpendicular velocity measurements

Effects of resonator geometry and substrate stiffness on the tunability of a deformable microwave metasurface

Strength and timing of primary and secondary vortices generated by a rotating plate

3D printing of elastomeric mechanical sensors designed for human motion monitoring