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International Journal Publications

1. S.Kamnis K.Kontis, Numerical studies on the application of synthetic jets for the active control of subsonic flow configurations. American Institute of Aeronautics & Astronautics (AIAA 2004-2609)

2. S.Kamnis S.Gu, Numerical modelling of droplet impingement. Journal of Physics D: Applied Physics, 38 (2005) 3664–3673

3. S.Kamnis S.Gu, Numerical modelling of propane combustion in a high velocity oxygen–fuel thermal spray gun. Chemical Engineering and Processing, Volume 45, Issue 4, April 2006, Pages 246-253

4. S.Kamnis S.Gu 3-D Modelling of kerosene fuelled HVOF thermal spray gun. Chemical Engineering Science, Volume 61, Issue 16, August 2006, Pages 5427-5439

5. S.Kamnis S.Gu, Computational fluid dynamic modelling of water-cooling mechanism during thermal spraying process. Int. J. Modelling, Identification and Control, Vol. 2, No. 3, 2007

6. N.Zeoli, S.Gu, S. Kamnis, Numerical simulation of in-flight particle oxidation during thermal spraying. Computers and Chemical Engineering (2007)

7. S.Kamnis S.Gu N.Zeoli Mathematical Modelling of Inconel 718 Particles in HVOF Thermal Spraying. Surface & Coatings Technology (2007)

8. N. Zeoli, S. Gu, S. Kamnis, Numerical modelling of metal droplet cooling and solidification. International Journal of Heat and Mass Transfer (2008)

9. S. Kamnis, S. Gu, T.J. Lu, C. Chen, Computational simulation of thermally sprayed WC–Co powder. Computational Materials Science (2008)

10. S.Gu, S.kamnis, Numerical modelling of in-flight particle dynamics of non-spherical powder. Surface & Coatings Technology 203 (2009) 3485–3490

11. S. Kamnis and S. Gu, Study of In-Flight and Impact Dynamics of Nonspherical Particles from HVOF Guns. Journal of Thermal Spray Technology (2009)

12. S. Kamnis a, S. Gu, T.J. Lu, C. Chen, Numerical modeling the bonding mechanism of HVOF sprayed particles. Computational Materials Science 46 (2009) 1038–1043

13. S. Gu and S. Kamnis, Bonding Mechanism from the Impact of Thermally Sprayed Solid Particles. Metallurgical and Materials Transactions A 2664—Volume 40A, Nov 2009

14. S Kamnis, S Gu, T J Lu and C Chen, Numerical modelling of sequential droplet impingements. Journal of Physics D: Applied Physics, 41 No 16 (2008) 165303

R&D Projects

Project: J3019E
Development of Flow Simulation and Process Control Tools for Thermal Spray Coating (FLOSS) Partners: Monitor Coatings Ltd, Metallisation Ltd,

As a cost-effective method to produce wear resistant, high temperature corrosion coating products, thermal spraying offers greater thickness capability, no part size restrictions with minimal noxious waste. However, complex multiphase flow generated in thermal spraying makes process control very difficult. Supported by a consortium including coating equipment manufacturers, service providers, end users and research providers, this project has proposed innovative methods to significantly reduce current costs of established high quality coating. Closely aligned with the competition theme, the main objectives of this project are: to simulate the multiphase flow; to develop flow function models integrated with CAE design and simulation tools; to develop a process control database to mininize the operation complexity and improve the quality of coating products.

Project: FP7-PEOPLE-IAPP-2008 Marie Curie Action 230715
Computational simulation to enhance technology development of thermal spray coating (SimuSpray) Partners: Southampton University, Pyrogenesis-sa.gr

SIMUSPRAY is to develop a pan European partnership by uniting research activities between a SME and a leading EU university. The latest techniques in computational simulation and surface engineering will be used or developed for solving industry-focused engineering problems. The use of the state-of-the-art modelling approaches will revolutionise the technology development in protective coating and surface engineering industry.

Project: FP7-Energy 241281
Thin Si film based hybrid solar cells on low-cost Si substrates (ThinSi) Partners: Stiftelsen SINTEF, Fraunhofer Institute for Solar Energy Systems, Interuniversitair Micro-Electronica centrum VZW, Ente per le Nuove tecnologie, l’Energia e l’Ambiente, University of Nottingham, Oxford Instruments Plasma Technology Ltd, Elkem Solar AS, PyroGenesis S.A, NT-MDT Europe BV, Innovative Materials processing Technologies Ltd, Isofoton S.A.

ThinSi will develop a solar cell processing chain for high throughput, cost-effective manufacturing of thin film silicon based solar cells on low-cost silicon substrates. The substrates will be made on the basis of an innovative powder-to-substrate concept. In line with the Workprogramme topic addressed, it will reduce the cost of solar cell modules compared to those made by the conventional wafer based approach.

A set of innovative processes will be developed to realize the new low-cost concept and transfer the results into production. The new silicon based substrates will be made from low-cost material using state-of-the art ceramics technologies. Cost effective processes for the formation of the thin film silicon base and the complete solar cell structure will be developed. New methods for optical confinement will be investigated. The electronic properties of individual solar cell materials and their interfaces as well as the relationship between the deposition parameters and the device properties will be analyzed using advanced characterization and modeling.

It will also develop a better understanding of relevant materials issues. Manufacturing procedures suitable for pilot scale production will be developed based on an innovative process chain. The produced solar cells will be assembled into complete modules. The project will develop innovative technologies and equipment prototypes that can easily be scaled up and transferred to production lines by the end of the project. New marked opportunities for the SME and industrial partners will be created, both as production tool suppliers and as end-users of the technology.

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