Dr Hua Xia
Areas of expertise
- Complex Physical Systems 029902
- Fluid Physics 020303
- Turbulent Flows 091508
- Biological Physics 029901
Research interests
- Biofilm mechanics and architecture
- Living fluids: nonequilibrium turbulent flows, bacterial turbulence and active swimmers
- Self-organization in chaotic and turbulent flows
- Control of diffusion and transport of micro-particles at the fluid-gas interface
Past research:
- Spectral energy transfer in fluids and plasma
- Thin layer fluid turbulence and spectral condensation
- Rotating fluid experiments
- Atmospheric wind measurements using LIDAR and SODAR
Biography
After graduating from Chongqing University in Electrical Engineering I worked on China’s biggest fusion research facility. Then I started my PhD project in plasma turbulence at the ANU which developed into a cross-disciplinary study of 2D turbulence. I received my PhD degree in 2006. In 2012 I was awarded the ARC DECRA and in 2014 I won the ARC Future Fellowship to further develop my research into transport of matter and energy in chaotic flows and living fluids.
My research interests broadly fall in the physics of complex systems, 2D turbulence, self-organization, and wave-flow interaction. Highlights of my research are related to (a) accumulation and conversion of the turbulent energy into mean flows, (b) conversion of energy of disordered surface waves into coherent flows; (c) engineering of dynamical metamaterials at the liquid–gas interface; (d) development of efficient methods of controlling and predicting turbulent diffusion on a liquid surface; and (e) studies of living fluids in bacterial turbulence.
Researcher's projects
Bacterial turbulence: self-organization
Systems in thermodynamic equilibrium are known to obey detailed balance, in which transition rates between any two micro-states are pairwise balanced. This means that there can be no net flux of transitions anywhere in the phase space of system states. This principle was identified and used by Ludwig Boltzmann in his pioneering development of statistical mechanics, the microscopic basis for thermodynamics. In contrast, living systems operate far from equilibrium, and molecular-scale violations of detailed balance lie at the heart of their dynamics. Turbulence is another example of system far from equilibrium, which has shown an amazing ability of self-organization.
Energy extraction from chaotic flows
In this project, I am interested in (1) self organizaiton of chaotic flows into coherent vortices and (b) directed transport in non-equilibrium turbulent system.
Liquid metamaterial generation for bacteria and active swimmer studies
Available student projects
Bacterial turbulence: diffusion and self-organizaiton
Dr Hua Xia, Dr Nicolas Francois, Professor Michael Shats, Dr Horst Punzmann
Effect of large coherent vortices on Lagrangian statistics in 2D turbulence
Spectral energy transfer in turbulence
Publications
- Xia, H, Francois, N, Punzmann, H et al 2018, 'Extreme concentration fluctuations due to local reversibility of mixing in turbulent flows', Modern Physics Letters B, vol. 32, pp. -.
- Francois, N, Xia, H, Punzmann, H et al 2018, 'Rectification of chaotic fluid motion in two-dimensional turbulence', Physical Review Fluids, vol. 3, no. 12, pp. 1-10pp.
- Xia, H & Francois, N 2017, 'Two-dimensional turbulence in three-dimensional flows', Physics of Fluids, vol. 29, no. 11, pp. 111107 (13pp).
- Francois, N, Xia, H, Punzmann, H et al 2017, 'Wave-based liquid-interface metamaterials', Nature Communications, vol. 8, no. 14325, pp. 14325-14325.
- Xia, H, Francois, N, Punzmann, H et al 2016, 'SIMULTANEOUS OBSERVATION OF ENERGY AND ENSTROPHY CASCADES IN THIN-LAYER TURBULENCE', 6th International Symposium on Physics of Fluids (ISPF6), ed. J Wu, C Shu, N Zhao, C B Lee and C L Zhu, World Scientific Publishing Company, Australia, pp. 1-9pp.
- Shats, M, Punzmann, H, Francois, N et al 2016, 'WAVE-GENERATED FLOWS ON THE WATER SURFACE', 6th International Symposium on Physics of Fluids (ISPF6), ed. J Wu, C Shu, N Zhao, C B Lee and C L Zhu, World Scientific Publishing Company, Australia, pp. 1-9pp.
- Shats, M, Xia, H & Punzmann, H 2016, 'Extreme Capillary Wave Events Under Parametric Excitation', in Mario Chavez, Michael Ghil, Jaime Urrutiaâ€?Fucugauchi (ed.), Extreme Events Observations, Modeling, and Economics, John Wiley & Sons Inc., New Jersey, United States of America, pp. 153-162.
- Francois, N, Xia, H, Punzmann, H et al 2015, 'Braid Entropy of Two-Dimensional Turbulence', Scientific Reports, vol. 5, pp. 18564-18564.
- Francois, N, Xia, H, Punzmann, H et al 2015, 'Inhibition of wave-driven two-dimensional turbulence by viscoelastic films of proteins', Physical Review E-Statistical, Nonlinear and Soft Matter Physics, vol. 92, no. 2, pp. 1-6.
- Francois, N, Xia, H, Punzmann, H et al 2015, 'Wave-particle interaction in the Faraday waves', European Physical Journal E, vol. 38, no. 10, pp. 106-106.
- Xia, H, Francois, N, Punzmann, H et al 2014, 'Taylor Particle Dispersion during Transition to Fully developed Two-Dimensional Turbulence', Physical Review Letters, vol. 112, no. 10, p. 104501.
- Francois, N, Xia, H, Punzmann, H et al 2014, 'Three-Dimensional Fluid Motion in Faraday Waves: Creation of Vorticity and Generation of Two-Dimensional Turbulence', Physical Review X, vol. 4, no. 2, p. 021021.
- Punzmann, H, Francois, N, Xia, H et al 2014, 'Generation and reversal of surface flows by propagating waves', Nature Physics, vol. 10, no. 9, pp. 658-663.
- Shats, M, Francois, N, Xia, H et al 2014, 'Turbulence driven by Faraday surface waves', 5th International Symposium on Physics of Fluids (ISPF5), ed. C. Shu, J. Wu, Q. D. Cai, C. B. Lee and N. Zhao, World Scientific Publishing Co. Pte Ltd, online, p. 12.
- Xia, H 2014, 'Lagrangian correlation and spectra in 2D turbulence', 5th International Symposium on Physics of Fluids (ISPF5), ed. C. Shu, J. Wu, Q. D. Cai, C. B. Lee and N. Zhao, World Scientific Publishing Co. Pte Ltd, online, pp. 1-8.
- Xu, H, Pumir, A, Falkovich, G et al 2014, 'Flight-crash events in turbulence', PNAS - Proceedings of the National Academy of Sciences of the United States of America, vol. 111, no. 21, pp. 7558-7563.
- Francois, N, Xia, H., Punzmann, H., and Shats, M. 2013, 'Inverse energy cascade and emergence of large coherent vortices in turbulence driven by Faraday waves', Physical Review Letters, vol. 110, no. 19, 194501.
- Xia, H., Francois, N., Punzmann, H., and Shats, M. 2013, 'Lagrangian scale of particle dispersion in turbulence', Nature Communications, vol. 4: 2013 doi: 10.1038/ncomms3013.
- Shats, M, Xia, H & Punzmann, H 2012, 'Parametrically Excited Water Surface Ripples as Ensembles of Oscillons', Physical Review Letters, vol. 108, no. 3, pp. 034502 (5).
- Xia, H & Shats, M 2012, 'Propagating solitons generated by localized perturbations on the surface of deep water', Physical Review E, vol. 85, no. 2, p. 026313.
- Xia, H, Maimbourg, T, Punzmann, H et al 2012, 'Oscillon dynamics and rogue wave generation in faraday surface ripples', Physical Review Letters, vol. 109, no. 11, pp. 1-5.
- Xia, H & Shats, M 2012, 'Structure formation in spectrally condensed turbulence', International Journal of Modern Physics: Conference Series, vol. 19.
- Shats, M, Xia, H & Byrne, D 2012, 'Turbulence in thick layers', International Journal of Modern Physics: Conference Series, vol. 19.
- Byrne, D, Xia, H & Shats, M 2011, 'Robust inverse energy cascade and turbulence structure in three-dimensional layers of fluid', Physics of Fluids, vol. 23, no. 9, pp. 1-6.
- Xia, H, Shats, M & Falkovich, G 2011, 'Turbulence in fluid layers', Journal of Physics: Conference Series(online), vol. 318, no. 012001, pp. 1-11.
- Xia, H, Byrne, D, Falkovich, G & Shats M, 2011, 'Upscale energy transfer in thick turbulent fluidÂ layers', Nature Physics, vol. 7, no. 4, p. 321-324.
- Shats, M, Byrne, D & Xia, H 2010, 'Turbulence decay rate as a measure of flow dimensionality', Physical Review Letters, vol. 105, no. 26, pp. 264501-264501.
- Shats, M, Punzmann, H & Xia, H 2010, 'Capillary Rogue Waves', Physical Review Letters, vol. 104, no. 10, pp. 104503 (4).
- Xia, H, Shats, M & Punzmann, H 2010, 'Modulation instability and capillary wave turbulence', Europhysics Letters, vol. 91, no. 1, p. 14002.
- Xia, H, Shats, M & Punzmann, H 2009, 'Universality of Kolmogorov law in spectrally condensed turbulence in thin layers', EUROMECH European Turbulence Conference 2009, ed. Bruno Eckhardt, Springer, Germany, pp. 709-710.
- Punzmann, H, Shats, M & Xia, H 2009, 'Observation of weak turbulence spectra of capillary waves', EUROMECH European Turbulence Conference 2009, ed. Bruno Eckhardt, Springer, Germany, pp. 725-728.
- Xia, H, Shats, M & Falkovich, G 2009, 'Spectrally condensed turbulence in thin layers', Physics of Fluids, vol. 21, no. 12, p. 125101.
- Shats, M & Xia, H 2009, 'Spectrally Condensed Fluid Turbulence and L-H Transitions in Plasma', Plasma and Fusion Research, vol. 4, pp. 012-1 - 012-8.
- Punzmann, H, Shats, M & Xia, H 2009, 'Phase Randomization of Three-Wave Interactions in Capillary Waves', Physical Review Letters, vol. 103, no. 6, pp. 064502-1/4.
- Xia, H, Shats, M, Punzmann, H et al 2009, 'Comment on "Turbulence-Condensate Interaction in Two Dimensions" Reply', Physical Review Letters, vol. 102, no. 14.
- Xia, H, Punzmann, H, Falkovich, G et al 2008, 'Turbulence-Condensate Interaction in Two Dimensions', Physical Review Letters, vol. 101, pp. 194504-1-4.
- Xia, H & Shats, M 2007, 'Spectural transfer analysis in plasma', in Jim Denier & Jorgen Fredericksen (ed.), Frontiers in Turbulence and Coherent Structures: proceedings of the COSNet/CSIRO Workshop on Turbulence and Coherent Structures in Fluids, Plasmas and Nonlinear Media, World Scientific Publishing Company, New Jersey, USA, pp. 457-470.
- Fujisawa, A, Ido, T, Shimizu, A et al 2007, 'Experimental progress on zonal flow physics in toroidal plasmas', Nuclear Fusion, vol. 47, no. 10, pp. S718-S726.
- Shats, M, Xia, H, Punzmann, H et al 2007, 'Suppression of Turbulence by Self-Generated and Imposed Mean Flows', Physical Review Letters, vol. 99, no. 16, pp. 164502 1-4.
- Shats, M, Punzmann, H & Xia, H 2006, 'Turbulent Particle Transport in the Context of L-H Transitions', Journal of Plasma and Fusion Research, vol. 82, pp. 353-356.
- Shats, M & Xia, H 2006, 'Experimental Studies of Plasma Turbulence', in M. Shats and H. Punzmann (ed.), Lecture Notes on Turbulence and Coherent Structures in Fluids, Plasmas and Nonlinear Media, World Scientific Publishing Company, USA, pp. 233-280.
- Shats, M, Xia, H & Punzmann, H 2006, 'Zonal flows, GAM, and radial electric field in the H-1 heliac', Czechoslovak Journal of Physics, vol. 56, no. 12, pp. 1353-1359.
- Xia, H, Shats, M & Punzmann, H 2006, 'Strong ExB Shear Flows in the Transport-Barrier Region in H-Mode Plasma', Physical Review Letters, vol. 97, no. 23, pp. 255003-1-4.
- Shats, M, Xia, H & Yokoyama, M 2006, 'Mean E x B flows and GAM-like oscillations in the H-1 heliac', Plasma Physics and Controlled Fusion, vol. 48, no. 2, pp. S17-S29.
- Shats, M, Xia, H & Punzmann, H 2005, 'Spectral condensation of turbulence in plasmas and fluids and its role in low-to-high phase transitions in toroidal plasma', Physical Review E-Statistical, Nonlinear and Soft Matter Physics, vol. 71, no. 4, pp. 046409-1-9.
- Harris, J, Shats, M, Blackwell, B et al 2004, 'Fluctuations and stability of plasmas in the H-lNF heliac', Nuclear Fusion, vol. 44, pp. 279-286.
- Xia, H & Shats, M 2004, 'Spectral energy transfer and generation of turbulent structures in toroidal plasma', Physics of Plasmas, vol. 11, no. 2, pp. 561-571.
- Shats, M, Xia, H, Punzmann, H et al 2004, 'Spectral energy transfer, generation of zonal flows and their role in confinement transitions', Fusion Science and Technology, vol. 46, no. 2, pp. 279-87.
- Xia, H & Shats, M 2003, 'Inverse Energy Cascade Correlated with Turbulent-Structure Generation in Toroidal Plasma', Physical Review Letters, vol. 91, no. 15, pp. 155001-1-4.
- Shats, M, Solomon, W & Xia, H 2003, 'Turbulent Transport Reduction and Randomization of Coherent Fluctuations by Zonal Flows in Toroidal Plasma', Physical Review Letters, vol. 90, no. 12, pp. 125002-1-4.
- Punzmann, H, Shats, M, Solomon, W et al 2003, 'Multichannel visible spectroscopy diagnostic for particle transport studies in the H-1 heliac', Review of Scientific Instruments, vol. 74, no. 3, pp. 2048-2051.
- Shats, M, Punzmann, H, Xia, H et al 2003, 'Measurements of Poloidal Rotation Velocity using Cross-correlation Spectroscopy in the H-1 Heliac', Review of Scientific Instruments, vol. 74, no. 3, pp. 2044-2047.
Projects and Grants
Grants information is drawn from ARIES. To add or update Projects or Grants information please contact your College Research Office.
- Novel methods of spill containment and debris mitigation on water surfaces (Secondary Investigator)
- Wind profiler network for planetary boundary layer research (Secondary Investigator)
- Understanding winds: energy transfer in turbulent rotating fluids (Primary Investigator)