Tony Ladd

Professor of Chemical Engineering
University of Florida
Gainesville, FL 32611-6005
Phone: (352) 392-6509
Fax: (352) 392-9513
tladd "at"

Effect of flow rate on the development of wormholes in an initially flat fracture. The quarter-cutaway views show the development of the concentration field inside the fracture (red is high, blue is low). The Peclet number (Pe) is a measure of the mean fluid velocity in the fracture

My research interests focus on the application of numerical simulations to complex systems containing a wide range of length scales and time scales. The goal is to model the essential physics of the problem in as simple and fundamental a way as possible. By comparing the predictions of numerical simulations of a mathematical model with experimental measurements, we gain understanding of the underlying physical phenomena in situations where analytic theory is impossible. An example is shown on the right, illustrating some of the different shapes and concentration fields that can develop spontaneously during the dissolution of an initially flat fracture. Further information can be found here and in Starchenko and Ladd 2018.

Recent Publications

  1. R. J. Montes and J. E. Butler and A. J. C. Ladd. Trapping DNA with a high throughput microfluidic device. Electrophoresis, 40:437-446, 2019.
  2. A. J. C. Ladd. Electrophoresis of sheared polyelectrolytes. Mol. Phys., 116:3121-3133, 2018.
  3. A. J. C. Ladd and P. Szymczak. Comment on "Validity of using large-density asymptotics for studying reaction-infiltration instability in fluid-saturated rocks". J. Hydrol., 564:414-415, 2018.
  4. V. Starchenko and A. J. C. Ladd. The development of wormholes in laboratory scale fractures: perspectives from three-dimensional simulations. Water Resources Res., 54:7946-7959, 2018.
  5. P. Kondratiuk, H. Tredak, V. Upadhyay, A. J. C. Ladd, P. Szymczak. Instabilities and finger formation in replacement fronts driven by an oversaturated solution. J. Geophys. Res., 122:5972-5991, 2017.
  6. A. J. C. Ladd and P. Szymczak. Use and misuse of large-density asymptotics in the reaction-infiltration instability. Water Resources Res., 53:2419-2430, 2017.
  7. V. Starchenko, C. J. Marra and A. J. C. Ladd. Three-dimensional simulations of fracture dissolution. J. Geophys. Res. Solid Earth, 121:6421-6444, 2016.
  8. I. A. Kent, P. S. Rane, R. B. Dickinson, A. J. C. Ladd, and T. P. Lele. Transient Pinning and Pulling: A Mechanism for Bending Microtubules. PLOS ONE, 11:e0151322, 2016.
  9. M. Arca, A. J. C. Ladd, and J. E. Butler. Electro-hydrodynamic concentration of genomic length DNA. Soft Matter, 12:6975-6984, 2016.

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Last updated August 2018