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CE Home > People > Faculty Directory > Roger Arndt
Roger E.A. Arndt
Professor
Contact Information:
Office: CivE 153 SAFL 376A
Phone: (612)625-2883
Fax: (612)626-7750
E-mail: arndt001@umn.edu
Research Interests:
Major research interests are in the areas of fluid mechanics with emphasis on turbulent shear flows and vortex flows; cavitation including inception physics, erosion mechanisms, noise and vibration and effects on turbomachinery performance; aeroacoustics including jet noise and turbomachinery noise; alternate energy with an emphasis on hydropower and wind turbine technology, turbomachinery; and aeration technology with a view towards developing cost effective environmental remediation techniques.
Current research in cavitation involves vortical flows with special application to propellers and turbomachinery. The influence of viscous effects on the development of various types of cavitation on lifting surfaces is being studied with a view towards predicting and minimizing cavitation erosion in turbomachinery. A basic understanding of the noise radiation mechanisms associated with different types of cavitation is being sought for application to acoustic methods for diagnosing cavitation erosion in large hydroturbines.
The principles of bubble formation in turbulent shear flow are being applied in the design of more efficient aeration equipment for a variety of applications in the environmental field.
The development of research facilities for research in bubble dynamics and cavitation has led to major responsibility for the hydrodynamic design of two major hydroacoustic facilities in the United States and Germany. The U.S. facility is the world's largest water tunnel.
Dr. Arndt conducts his research at the St. Anthony Falls Laboratory.
Selected Publications:
Arndt, R.E.A. From Wageningen to Minnesota and Back:
Perspectives on Cavitation Research Keynote
Lecture, Proceedings Sixth International Symposium on Cavitation, CAV2006,
Wageningen, The Netherlands, September 2006
Amromin, E. Kopriva, J., Arndt, R.E.A. Hydrofoil Drag
Reduction by Partial Cavitation, J. Fluids Engineering, 128, Sept. 2006
Vanek, B., Bokor, J., Balas, G.J. and Arndt, R.E.A. Longitudinal motion
control for a high-speed supercavitation vehicle, Journal of Vibration and
Control, Sept. 2006
Balas, G.J., Bokor, J.,Vanek, B. and R.E.A. Arndt. 2006. Control of
high-speed underwater vehicles. Control of Uncertain Systems: Modelling,
Approximation, and Design, B. Francis, M. Smith and J. Willems, eds. Berlin: Springer-Verlag.
Arndt, R.E.A., G. Balas and M. Wosnik. 2005. Control of cavitating flows: A
perspective. Japan Soc. Mech. Eng. Series B, 48(2): 334-341.
Arndt, R.E.A. 2004. Hydraulic turbines. In Handbook of Mechanical
Engineering, F. Kreith, ed. Boca Raton, Fla.: CRC Press.
Arndt, R.E.A. 2002. Cavitation in vortical flows. Annual Review of Fluid
Mechanics, J.L. Lumley, S.H. Davis and H.L. Reed, eds., 34: 143-75.
Kjeldsen, M., R.E.A. Arndt, and M. Effertz. 2000. Spectral characteristics
of sheet/cloud cavitation. J. Fluids Engineering, 122(3).
Maines, B. and R.E.A. Arndt. 1997. The case of the singing vortex. J. Fluids
Engineering, 119(2): 271-6.
Arndt, R.E.A. 1995. Vortex cavitation. In Fluid Vortices, S. Green,
ed., Boston: Kluwer Academic Publishers.
Education:
- B.C.E., 1960, Civil Engineering, City College of New York
- S.M., 1962, Civil Engineering, Hydrodynamics, Massachusetts Institute of Technology
- Ph.D., 1967, Civil Engineering, Hydrodynamics, Massachusetts Institute of Technology
Experience:
- Associate Professor, Aerospace Engineering, Penn State University, 1967-77
- Mechanical Engineer, Littleton Research and Engineering Corp., 1965
- Senior Research Engineer, Lockheed Company, CA., 1963-64
- Research Engineer, Allegheny Ballistics Lab., MD., 1962-63
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