Deakin Research

Institute for Frontier Materials

Computational simulation and image processing

Using advanced computational simulation and image processing technology to understand

  • material properties
  • manufacturing processes
  • material micro and nanostructures.

Image analysis and 3D tomography for characterisation of porous materials

Dr. Fengshua She
Prof. Lingxue Kong

Developing advanced image analysis for the characterization of materials including particles, porous materials and composites.

Providing better visualization, automatic measurements of a range of morphological and topological properties, texture classification, object detection and classification.

She, F.H., Tung, K.L. and Kong, L.X. (2008) Robot. CIM-Int. Manuf. 24: 427-434
She, F.H.; Nihara, K., Gao, W.M.; Hodgson, P.D.; Jinnai, H.; Kong, L.X. (2010) Desalination, 250: 757-761

Recomposition of 3D nano-structures by 3D tomography
Recomposing of 3D nano-structures by 3D tomography. The material can be virtually recomposed into ultra-thin slices in order to access its properties.

Modelling for novel separation and fluid dynamics processes

Dr. Weimin Gao
Prof. Lingxue Kong

Nanofluidics are a new class of fluids which consist of a base fluid with suspended nano-sized particles (1-100 nm). The particles are generally metals or oxides, increasing heat transfer (conduction and convection) coefficients.

Nanotechnology is being used or considered for use in many applications to provide cleaner, more efficient energy supplies and uses. These include engine cooling, engine transmission oil, cooling of electronics, boiler exhaust flue gas recovery, heating and cooling of buildings, domestic refrigerator and chiller cooling, nuclear systems cooling, solar water heating, defence, space and biomedical applications, lubrications, thermal storage and drag reductions.

Gao, W.M., Hodgson, P.D. and Kong, L.X. (2012) Int J Heat Mass Tran, 55(04): 5007 - 5015

Example of Nano fluid modelling system where carbon nanotubes interact with a surface in solution
An example of a nano fluid modelling system where carbon nanotubes interact with a surface in solution (see video for a snapshot)

Fluidised bed

Fluidized bed thermo-chemical treatment technology

A fluidized bed allows fine solid particles to behave like a liquid by the flow of supporting gas from the bottom of the solid bed.

Various heat and thermo-chemical treatment processes can be performed in a fluidized bed by modifying parameters such as temperature, gas mixture and solid/gas mixture. The advantages of a heat treatment fluidized bed are near ideal temperature uniformity through the whole gas-particle volume and rapid heating of the parts treated.

Example of fluidized bed

We have proven the capability to heat treat and developed many production processes utilizing a fluidized bed.

Thermo-chemical heat treatment is a complex diffusion process of metallic and non-metallic elements (such as C, N and Cr) into a thin substrate surface to modify the surface chemistry and microstructure of components. It includes gas-solid flow, heat transfer, species transport, chemical reactions of fluidizing gases, decomposition of gaseous molecules, absorption of atoms and diffusion of the elements in metallic components.

The Computational Fluid Dynamics group's mission is to comprehensively improve the understanding of the chemical reactions and mass transfer in fluidizing gases and between the fluidizing gases and immersed metallic parts, as well as the dynamics and heat transfer in fluidized beds, where multiple parts and a basket of parts are immersed.

Modelling of heat and thermo-chemical processes in a fluidized bed

The aim of this project was to establish a comprehensive knowledge of:
  • gas-solid multiphase flow
  • heat and mass transfer at the part surface and between solid particles and the gas phase
  • solid-gas chemical reactions in various bed and atmosphere compositions
  • element diffusion into parts through computational simulation of processes and experimental evaluation of models.

Deakin University acknowledges the traditional land owners of present campus sites.

16th August 2013