Department of Physics > Faculty and Staff > Bill Thacker

- Dr. Bill Thacker

Dr. Bill Thacker

Professor and Chair

Department of Physics

College of Arts and Sciences

Saint Louis University

3511 Laclede Ave.

Shannon Hall 100A

St. Louis, MO 63103

Phone: 314-977-8422

Email: thackerwd@slu.edu

**Education**

Ph.D. in Physics from the University of Colorado-Boulder

M. S. in Physics from University of Illinois, Urbana

B. S. in Physics from Massachusetts Institute of Technology

**Research Interests**

** **Theoretical Physics. Theory and Modeling of Turbulence. Focus of current research includes:

- Turbulence in time-dependent mean flows
- The influence of compressibility on turbulent correlations involving pressure
- Development of turbulence models that incorporate transition
- Probability density functions for turbulence and for chaotic advection
- Theory of chaos and dynamical systems
- Quantum information theory

**Publications**

- W. D. Thacker, S. Sarkar, and T. B. Gatski, "Analyzing the Influence of Compressibility on the Rapid Pressure-Strain Rate Correlation in Turbulent Shear Flows", Theor. Comput. Fluid Dyn.
**21**, 171 (2007). - Pablo Hidalgo, Amy W. Lang, William D. Thacker, "POD Study of the Coherent Structures within a Turbulent Spot", AIAA Paper presented at the 44th AIAA Aerospace Sciences Meeting January 9-12 2006, Reno NV
- W. D. Thacker, S. Sarkar, and T. B. Gatski, "An Analysis of the Rapid Pressure-Strain Rate Correlation in Compressible Shear Flow", in the Proceedings of the 4th International Symposium on Turbulence and Shear Flow Phenomena in Williamsburg, VA, 27-29 June 2005.
- C. L. Rumsey, W. D. Thacker, T. B. Gatski, and C. E. Grosch, "Analysis of Transition-Sensitized Turbulent Transport Equations", American Institute of Aeronautics and Astronautics Paper 2005-0523, presented at the 43rd AIAA Aerospace Sciences Meeting, January 10-13 2005, Reno NV.
- C. D. Pruett, T. B. Gatski, C. E. Grosch, and W. D. Thacker, " The temporally filtered Navier-Stokes equations: Properties of the residual stress", Physics of Fluids,
**15**, 2127 (2003). - W. D. Thacker, T. Gatski, and C. Grosch, "Modeling the dynamics of ensemble-averaged linear disturbances in homogeneous shear flow", Flow, Turbulence and Combustion,
**63**, 39 (2000). - W. D. Thacker, T. Gatski, and C. Grosch, "Analyzing mean transport equations of turbulence and linear disturbances in decaying flows", Physics of Fluids,
**11**, 2626 (1999). - W. D. Thacker, "A path integral for turbulence in incompressible fluids", Journal of Mathematical Physics,
**38**, 300 (1997). - W.D. Thacker, "New Formulation of the Classical Path Integral with Reparameterization Invariance", Journal of Mathematical Physics,
**38**, 2389 (1997). - V.V. Dixit, T.S. Santhanam, and W.D. Thacker, "A Supersymmetric Dirac Oscillator with Scalar Coupling", Journal of Mathematical Physics,
**33**, 1114 (1992). - E. Gozzi, M. Reuter, W.D. Thacker, "Symmetries of the Classical Path Integral on a Generalized Phase Space Manifold", Physical Review,
**D46**, 757 (1992). - V.V. Dixit, T.S. Santhanam, and W.D. Thacker, "Mass Matrix with Symmetric Mixing", Physical Review,
**D43**, 945 (1990). - G. Giavarini, E. Gozzi, D. Rohrlich, and W.D. Thacker, "Classical Adiabatic Holonomy in Field Theory", Physical Review
**D42**, 2252 (1990). - J. Kupsch and W.D. Thacker, "Euclidean Majorana and Weyl Spinors", Fortschritte der Physik
**38**, 35 (1990). - E. Gozzi, M. Reuter, and W.D. Thacker, "Hidden BRS Invariance in Classical Mechanics II", Physical Review vol. D40, pp. 3363-3377 (1989).
- G. Giavarini, E. Gozzi, D. Rohrlich, and W.D. Thacker, "On the Removability of Berry's Phase", Journal of Physics A vol. 22, 3513-3529 (1989), (with G. Giavarini, E. Gozzi and D. Rohrlich).
- E. Gozzi and W.D. Thacker, "Classical Adiabatic Holonomy and its Canonical Structure", Physical Review vol. D35, pp. 2398-2406 (1987).
- W. Drechsler and W. D. Thacker, "Generalized Spinor Fields and Gravitation", Classical and Quantum Gravity vol. 4, pp.291-318 (1987).
- A.O. Barut and W.D. Thacker, "Zitterbewegung of the Electron in External Fields", Physical Review" vol. D31, pp.2076-2088 (1998).

**Current and Recent Student Projects**Chaos in Simple Fluid Flows