Imperial College London

Dr Konstantinos Steiros

Faculty of EngineeringDepartment of Aeronautics

Imperial College Research Fellow
 
 
 
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Contact

 

k.steiros13

 
 
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Location

 

420bCity and Guilds BuildingSouth Kensington Campus

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Summary

 

Overview

My primary research interests are in experimental and theoretical fluid mechanics and include the creation of novel experimental and analytical tools for the study of complex flow phenomena appearing in turbulent flows.

Dynamic mixing

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Fractal impellers


Many applications in the pharmaceutical industry require a mixer which generates high levels of turbulence to reduce mixing times, high homogeneity of turbulence for homogeneous end results, and low shear to protect shear sensitive cells. These conditions are very challenging to fulfill simultaneously, but can be approached with the use of fractal mixers.fractal         Figure: Wake of Regular and Fractal Mixing Impellers

Unsteady Stirred Tanks


Recent experiments have shown that a way to drastically increase mixing efficiency in dynamic mixers is to operate them in an unsteady manner (e.g. by continuously accelerating and decelerating the impeller). To design such unsteady mixers we must first model their unsteady flow characteristics. A first step towards that goal is the modeling of quasi-stationary transient processes in dynamic mixers. 


Wind Energy

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Wind turbine modeling

We have developed a new momentum theory for actuator disks, which can be implemented to Blade Element Momentum (BEM) predictive models for wind turbines and aircraft propellers.a

high reynolds number facilities


Together with collaborators at Princeton University, we are constructing pressurized facilities, which will be used to test wind turbines and wind farms under dynamic similarity.

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Turbulence

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I have recently proposed a novel phenomenology that describes non-Kolmogorov turbulence cascades.

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