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Assoc Prof M Sellier

1 year ago

Spray control in rotary atomizers University of Canterbury in New Zealand

Degree Level

PhD

Field of study

Mechanical Engineering

Funding

Fully Funded

Deadline

Expired

Country flag

Country

New Zealand

University

University of Canterbury

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Keywords

Mechanical Engineering
Chemical Engineering
Mathematics
Mathematical Modeling
Fluid Mechanics
Computational Physics
Technical Engineering
Wettability
Physics
Applied Mathematic

About this position

This project aims to control the droplet size distribution produced by rotary atomizers by adjusting the shape and wettability of the rotating surface

Rotary atomizers are simple devices which allow the break-up of a fluid stream into small droplets. They involve a fluid jet impinging vertically at the centre of a rotating surface. Under the effect of the centrifugal force, the fluid spreads outwards and forms a film which evolves into ligaments at the rim which ultimately break up into droplets.

Rotary atomizers are routinely used in a range of industrial applications including spray dryers to produce powders in the food industry, painting, microencapsulation, the production of pharmaceuticals, or agricultural sprays for which it is important to maximise the amount of exposed fluid surface area per unit volume.

It is well-known that the shape and nature of the spinning surface in the atomizer is a determining factor in the droplet size distribution but the complexity of the underpinning multiphase, multiscale flow on a curved, rotating surface has impaired progress in rotary atomizer design informed by systematic and rigorous mathematical modelling and numerical simulations.

This project aims to shed light on the relationship between the shape and wettability of the rotating surface and the resulting droplet size distribution of rotary atomizers using flow stability analysis and direct numerical simulations.

The candidate will be based at the University of Canterbury in Christchurch, New Zealand and part of an international collaboration with EPFL in Lausanne, Switzerland.

Funding details

Fully Funded

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Professors

Mechanical Engineering

University Name
Country flag

New Zealand

Research Interests

Fluid Mechanics

Applied Mathematic

Technical Engineering

Wettability

Mathematical Modeling