About Professor Timothy Langrish

Discovering new and worthwhile physical and chemical processes is very important to me, with bright, friendly and motivated students and researchers. An example of a new discovery is our recent work on crystallization in drying and the use of proteins for modifying the surfaces of sticky particles.

Tim focusses on research which aims to find better and more innovative ways to apply drying technology for new products and processes in the food and timber processing industries.

Professor Langrish is a world leader in drying technology, particularly spray drying and the drying of timber.  His work, with Professor Fletcher, on transient flows in spray dryers, has uncovered new types of flow instabilities that are fundamental to improving practical outcomes in reducing the deposition of particles on spray dryer walls.  This achievement is scientifically significant because it applies advanced computational modelling and physical understanding to the solution of important and common industrial process engineering problems.  This work has been an example of a key “thought lead” that has been important in a pre-competitive way to the operation of dryers in industry, for example Procter and Gamble.  An important application of this contribution is to enhance the operability and availability of spray dryers in the Australian dairy industry.  His recent work to develop crystallization in drying has the potential to improve the use of resources by combining crystallization and drying, which traditionally are done separately, into one operation.To reduce wastage in the timber industry, he has also optimized timber drying schedules, applying fundamental wood science to enable forest companies to improve their drying operations.  This is especially important as high-quality timbers become scarcer and the wasteful practices of yesteryear can no longer be tolerated. The results have appeared recently as a major book published by Springer-Verlag.  This contribution is unique: previously no single book had adequately covered a basic understanding of wood drying in practice, showing the scientific significance of the work. The industrial significance and application of this work can be judged from the improvements in productivity (over 10%) and quality (over 50% reduction in cracking) that have been achieved for speciality timber such as ironbark. Both these applications (in dairy and timber industries) are examples of building on Australia’s strengths in dairy and timber industries, and these industries involve complex systems, in terms of advanced flow dynamics and particle mechanics.  Professor Langrish has enhanced Australia’s competitive advantage in the production of dried dairy and timber products by streamlining their production.

Selected publications

  • Chiou, D., Langrish, T.A.G., and Braham, R. (2008), “Partial crystallisation behaviour during spray drying: simulations and experiments”, Drying Technology, 26(1), 27-38.
  • Chiou, D. and Langrish, T.A.G. (2007), “Development and characterisation of novel nutraceuticals with spray drying technology”, Journal of Food Engineering, 82(1), 84-91.
  • Fletcher, D.F., Guo, B., Harvie, D., Langrish, T.A.G., Nijdam, J.J. and Williams, J. (2006), “What is important in the simulation of spray dryer performance and how do current CFD models perform?”, Applied Mathematical Modelling, 30(11), 1281-1292.
  • Nijdam, J.J., Guo, B., Fletcher, D.F. and Langrish, T.A.G. (2006), “Lagrangian and Eulerian models for simulating turbulent dispersion and agglomeration of droplets within a spray”, Applied Mathematical Modelling, 30(11), 1196-1211.
  • Haque, M.N., Langrish, T.A.G. (2005), “Assessment of the actual performance of an industrial solar kiln for drying timber”, Drying Technology, 23(7), 1541-1553.
  • Guo, B., Langrish, T.A.G., Fletcher, D.F. (2003), “Simulation of the gas flow instability in a spray dryer”, Trans. I.Chem.E., 81(A6), 631-638.
  • Guo, B., Langrish, T.A.G. and Fletcher, D.F. (2001), “Simulation of turbulent swirl flow in an axisymmetric sudden expansion”, AIAA Journal, 39(1), 96-102.
  • Keey, R.B., Langrish, T.A.G. and Walker, J.C.F. (2000), “Kiln Drying of Lumber”, Springer-Verlag, Heidelberg, Germany.
  • Langrish, T.A.G., Brooke, A.S., Davis, C.L., Musch, H.E. and Barton, G.W. (1997), “An improved drying schedule for Australian ironbark timber: optimisation and experimental validation”, Drying Technology – An International Journal, 15(1), 47-70.
  • Langrish, T.A.G. and Keey. R.B. (1992), “A solar-heated kiln for drying New Zealand hardwoods”, Transactions of the Institution of Professional Engineers New Zealand, 18(1), 9-14.