Blade design and optimization of a horizontal axis tidal turbine

A contra-rotating Wells turbine as an alternative to a biplane Wells turbine for wave energy conversion is investigated. The aerodynamic analysis and control of such a turbine are presented. It is shown that for a given pressure amplitude a contra-rotating Wells turbine is aerodynamically more efficient and can operate over a wider range of flowrates when compared to a biplane Wells turbine.

Aerodynamic performance of contra-rotating Wells Turbine for wave energy.

Entropy generation minimization of a pump running in reverse mode based on surrogate models and NSGA-II

The application of white box models in digital twins is often hindered by missing knowledge, uncertain information and computational difficulties. Our aim was to overview the difficulties and challenges regarding the modelling aspects of digital twin applications and to explore the fields where surrogate models can be utilised advantageously. In this sense, the paper discusses what types of surrogate models are suitable for different practical problems as well as introduces the appropriate techniques for building and using these models. A number of examples of digital twin applications from both continuous processes and discrete manufacturing are presented to underline the potentials of utilising surrogate models. The surrogate models and model-building methods are categorised according to the area of applications. The importance of keeping these models up to date through their whole model life cycle is also highlighted. An industrial case study is also presented to demonstrate the applicability of the concept.

https://www.mdpi.com/2227-9717/9/3/476/pdf

Modelling for Digital Twins—Potential Role of Surrogate Models

P. Madhan Kumar

Papers

Performance enhancement of Wells turbine: Combined radiused edge blade tip, static extended trailing edge, and variable thickness modifications

Introducing Gurney flap to Wells turbine blade and performance analysis with OpenFOAM

Multi-fidelity optimization of blade thickness parameters for a horizontal axis tidal stream turbine

Coupled CAD-CFD automated optimization for leading and trailing edge of an axial impulse turbine blade

Wave Energy Harvesting Turbine: Effect of Hub-To-Tip Profile Modification