Christopher R. Ellis Research Associate B.S.,1982 Electrical Engineering,  University of Minnesota  M.S., 1986 Civil Engineering, University of Minnesota            Major: Water Resources  Ph.D.,1994 Civil Engineering, University of Minnesota

 Research
Primary areas of expertise include experimental hydrodynamics, water quality and hydraulic modeling, instrumentation design, data acquisition and analysis. Current research activities: Design and construction of a facility to be used to study the influence of tectonic processes on river basin development, morphometry, and sedimentation. - Research in sheet cavitation and association erosion on foils - Wind power feasibility study. Previous and ongoing research interests: Development of a low velocity current meter - Study of stratified flows in diverging channels - Use of air to mitigate erosion due to cavitation - Study of under-ice lake hydrodynamics - Development and implementation of non-melting under-ice aeration - Hydraulic model studies.

Selected Publications

Mohrig, D., K. Whipple, M. Hondzo, C. Ellis and G. Parker,  Hydroplaning of subaqueous debris flows, Geological Society of American Bulletin, 110(3), March 1998.

Arndt, R., S. Paul, and C. Ellis, "Application of piezoelectric film in cavitation research," Jour. Hydraulic Engineeering, Vol. 123(6), June 1997.

Ellis, C., J. Champlin, and H. Stefan, Density Current Intrusions in an Ice-Covered Urban Lake, SAFL Project Report No. 400, prepared for USEPA, Washington, D.C., March 1997.

Farell, C. and C. Ellis, "Wind Energy Feasibility and Energy Education Project Lower Sioux Community, SAFL Project Report No. 404, prepared for Office of the Environment, Lower Sioux Community, MN, July 1997.

Fang, X., C. Ellis, and H. Stefan, "Dynamics of heat exchange between sediment and water in a lake," Water Resources Research, Vol. 32(6), 1996.

Ellis, C. and H. Stefan, "Design and testing of two ice-preserving winter lake aeration systems," Proc. Hydraulic Engineering '94, G. Cotroneo and R. Rumer (eds.), ASCE, Aug. 1994

Paul, S., C. Ellis, and R. Arndt, The use of piezoelectric film in cavitation research, Proceedings, Symp. on Fundamentals and Advancements in Hydraulic Measurements and Experimentation, ASCE, Buffalo, NY, Aug. 1994.

Arndt, R., S. Paul, and C. Ellis. Investigation of the Use of Air Injection to Mitigate Cavitation Erosion, SAFL Project Report No. 343, prepared for Pacific Gas & Electric Company, 1993.

Ellis, C. and J. Wetzel. A Model Study of Pressure Distribution Downstream of the Flambeau Dam Spillway, SAFL Project Report No. 326, prepared for Mead and Hunt, Inc., Madison, WI, 1992.

Ellis, C., H. Stefan, and R. Gu. Water temperature dynamics and heat transfer beneath the ice cover of a lake, Limnology and Oceanography, Vol. 36, No. 2, 1991.

Ellis, C. and H. Stefan. Hydraulic Design of an Axisymmetric Diffuser for a Lake Aeration System, SAFL External Memorandum No. M-223, 1991.

Ellis, C. and H. Stefan. Hydraulic design of winter lake aeration system, Jour. Environmental Engineering, ASCE, Vol. 116(2), March 1990.

Ellis, C. and H. Stefan. Oxygen demand in ice covered lakes as it pertains to winter aeration, Water Resources Bulletin, Vol. 25, No. 6, 1989.

Ellis, C. and H. Stefan. Navigation Conditions and Flood Conveyance at Locks and Dam No. 2, Mississippi River, Before and After Construction of a Proposed Hydropower Plant: Hydraulic Model Investigations, SAFL Project Report No. 260, prepared for City of Hastings, MN, 1987.

Ellis, C. and H. Stefan. Development of hydrogen bubble velocity meter, Jour. Hydraulic Engineering, ASCE, 112(1):59-64,. 1986.

Ellis, C. and H. Stefan. Low velocity measurement in water, Water Resources Research, 22(10):1480-1486, 1986.

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