Fundamental Study of Cavitation Melt Processing: Opening the Way to Treating Large Volumes (UltraMelt)
Lead Research Organisation:
University of Greenwich
Department Name: Mathematical Sciences, FACH
Abstract
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Organisations
Publications
Bojarevics V
(2015)
Contactless ultrasonic treatment of melts using EM induction
in IOP Conference Series: Materials Science and Engineering
Bojarevics V
(2018)
Electromagnetic particle separation in the cold crucible melting with novel type bottom pouring nozzle
in IOP Conference Series: Materials Science and Engineering
Bojarevics V
(2017)
Energy Technology 2017
Bojarevics V
(2016)
Dynamic melting and impurity particle tracking in continuously adjustable AC magnetic field
in IOP Conference Series: Materials Science and Engineering
Bojarevics V
(2015)
Contactless Ultrasound Generation in a Crucible
in Metallurgical and Materials Transactions A
Djambazov G
(2014)
Light Metals 2014
Djambazov G
(2015)
Finite volume solutions for electromagnetic induction processing
in Applied Mathematical Modelling
Eskin DG
(2019)
Fundamental studies of ultrasonic melt processing.
in Ultrasonics sonochemistry
Lebon G
(2016)
A model of cavitation for the treatment of a moving liquid metal volume
in International Journal of Cast Metals Research
| Description | Ultrasonic treatment creates different types of cavitation in liquids, depending on fundamental properties such as surface tension, viscosity, etc. These were observed in transparent liquids. The knowledge was transferred to aluminium processing. The use of acoustic resonance was studied as a factor in improving throughput in flowing metal. An new multi-scale (time and space) numerical method was developed to bridge the liquid continuum with discrete bubble behaviour. A contactless electromagnetic device has been developed and patented to induce cavitation in reactive or high temperature materials. The resonance principle is employed in the new device that will be the subject of new research in EPSRC EP/P034411/1 "Contactless Ultrasonic Processing for Liquid Metals", Oct. 2017-Sept. 2020. Further research as a continuation of this award will be the subject of EP/R011001/1 "Upscaling environment-friendly cavitation melt treatment (UltraMelt #2)", which will utilise the findings of this award in industrial scale studies. |
| Exploitation Route | Consider frequency tuning and it s relationship to treatment container geometry to maximise effectiveness. The state of cavitation can be detected by simply using a high frequency microphone placed outside the liquid volume in opaque media |
| Sectors | Aerospace, Defence and Marine,Chemicals,Environment,Healthcare,Manufacturing, including Industrial Biotechology |
| Description | EPSRC Manufacturing |
| Amount | £998,664 (GBP) |
| Funding ID | EP/R011001/1 |
| Organisation | Engineering and Physical Sciences Research Council (EPSRC) |
| Sector | Public |
| Country | United Kingdom |
| Start | 04/2018 |
| End | 03/2021 |
| Description | EPSRC Manufacturing |
| Amount | £1,095,000 (GBP) |
| Funding ID | EP/P034411/1 |
| Organisation | Engineering and Physical Sciences Research Council (EPSRC) |
| Sector | Public |
| Country | United Kingdom |
| Start | 10/2017 |
| End | 09/2020 |
| Title | Gas Cavitation Software |
| Description | Development of a new method and associated software for evaluating the impact of ultrasonic waves on liquids, ranging from water and biological fluids to liquid metals. |
| Type Of Material | Improvements to research infrastructure |
| Year Produced | 2016 |
| Provided To Others? | Yes |
| Impact | The software is currently being used to improve the quality of aluminium metal ingots by Constellium Ltd in association with Dr Lebon who was the PDRA on the project. |
| Title | Multi-physics model of gas cavitation in liquid metals |
| Description | Multi-scale model linking single bubble cavitation to the fluid dynamics of the treatment vessel |
| Type Of Material | Computer model/algorithm |
| Year Produced | 2016 |
| Provided To Others? | Yes |
| Impact | Model was used in conjunction with a DEM framework to simulate the dispersion of nanoparticle clusters in liquid metals |
| Title | MANUFACTURING OF A METAL COMPONENT OR A METAL MATRIX COMPOSITE COMPONENT INVOLVING CONTACTLESS INDUCTION OF HIGH-FREQUENCY VIBRATIONS |
| Description | The present invention relates to a system for contactless induction of high-frequency vibrations in a volume of molten metal (1) during the manufacturing of a metal component or a metal matrix composite component. The system comprises a moveably arranged electromagnetic primary coil (2), adjustment means (3) for adjusting the position of the primary coil (2), and a control unit (5) for controlling the position of the primary coil (2) to a predefined distance above and not in physical contact with an upper free surface (4) of the molten metal (1) during use of the system. In some embodiments of the invention the molten metal (1) is contained in a foundry crucible (7) during manufacturing. In other embodiments, the system is used for an additive manufacturing system, so that the primary coil (2) is arranged above the melt pool (16). In both embodiments, a secondary low-frequency electromagnetic coil (9) may be arranged around and at a distance from the molten metal (1). This secondary coil (9) is used to induce flow and/or vibrations in the molten metal (1) which is particularly useful during manufacturing of large components. |
| IP Reference | WO2015028065 |
| Protection | Patent granted |
| Year Protection Granted | 2015 |
| Licensed | No |
| Impact | Grant application submitted, based on the use of this device for the treatment of high temperature or reactive alloy melts |
| Title | PHYSICA |
| Description | Multi-physics software product used in most projects featured in my portfolio |
| Type Of Technology | Software |
| Impact | Continuously developing software used as an essential tool in most Industrial, EU or Research Council projects carried out by my team. Used under license by ArcelorMittal and Xstrata/Glencore |
| URL | http://www2.gre.ac.uk/about/faculty/ach/research/centres/cmrg/services/software/physica |