Estimating the non-dimensional energy of vortex rings by modelling their roll-up

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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 ...

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This paper summarizes a series of analytical studies that were conducted in connection with an improved approach for the design of acceleration-sensitive nonstructural elements. In the new approach, bracing to secure nonstructural elements to the structure ...

In this article we study the so-called water tank system. In this system, the behavior of water contained in a 1-D tank is modelled by Saint-Venant equations, with a scalar distributed control. It is well-known that the linearized systems around uniform st ...

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At part load conditions, Francis turbines are subject to the emergence of a hydrodynamic instability in their draft tube, referred to as precessing vortex rope. It induces pressure pulsations in the water passages at the precession frequency of the vortex, ...

In the present paper, Large Eddy Simulations combined with the Zwart-Gerber-Belamri cavitation model are conducted to study the flow characteristics in a tip-leakage flow. A reasonable agreement is obtained between the numerical and experimental data. With ...

We develop a model to investigate the time evolution of the mean location and variance of a random walker subject to Poisson-distributed collisions at constant rate. The collisions are instantaneous velocity changes where a new value of velocity is generat ...

Tip Vortex Cavitation (TVC) is a major issue in design and operation of axial hydraulic machines. We investigate the capacity of a flexible trailing thread in alleviating TVC by analyzing the flow-induced motion. For this purpose, a nylon thread with three ...

Despite being a powerful medical imaging technique which does not emit any ionizing radiation, magnetic resonance imaging (MRI) always had the major problem of long scanning times that can take up to an hour depending on the application. It also requires u ...

Ring vortices are efficient at transporting fluid across long distances. They can be found in nature in various ways: they propel squids, inject blood in the heart, and entertain dolphins. These vortices are generally produced by ejecting a volume of fluid ...

Vortex rings are very efficient at transporting fluid on long distances and can generate large forces, either thrust or drag. These abilities are influenced by the vorticity distribution within the vortex. Previous work on vortices produced by piston-cylin ...

Estimating the non-dimensional energy of vortex rings by modelling their roll-up

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Reactive collision-free motion generation in joint space via dynamical systems and sampling-based MPC

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

Propagation of planar three-dimensional buoyant hydraulic fractures

Mechanism balancing taxonomy

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

Lagrangian analysis of bio-inspired vortex ring formation

Effects of spanwise confinement on stratified shear instabilities

Analytical Studies in Support of an Improved Approach to the Design of Acceleration-Sensitive Nonstructural Elements

Stabilization of the linearized water tank system

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

Physical Mechanism and Flow Control of Tip Vortex Cavitation

Angular Momentum in Rotating Superfluid Droplets

Continuously-fed density currents over impermeable and porous substrates

Swirl number based transposition of flow-induced mechanical stresses from reduced scale to full-size Francis turbine runners

LES investigation of the influence of cavitation on flow patterns in a confined tip-leakage flow

Particle transport at arbitrary timescales with Poisson-distributed collisions

Mitigating tip vortex cavitation by a flexible trailing thread

Data-driven Measurement Designs for Magnetic Resonance Imaging

Scaling of the translational velocity of vortex rings behind conical objects

Evolution of the vorticity distribution in vortex rings