Michael K. Jensen Professor 2008 Jonsson Engineering Center Tel: (518) 276-2843; Fax: (518) 276-6025; E-Mail jensem@rpi.edu [ MANE || Faculty ]

After receiving his B.S. in Mechanical Engineering in 1972 from the University of Missouri-Columbia, Michael Jensen spent two years in industry. He returned to graduate school at Iowa State University and was awarded his M.S. degree in 1976 and Ph.D. in 1980, both in Mechanical Engineering. He then joined the faculty at the University of Wisconsin-Milwaukee where he taught and researched for seven years. In January, 1987 Michael Jensen became a member of the Rensselaer faculty.

Research Interests and Activities

Major Interests: heat transfer, fluid mechanics, heat exchangers, boiling two-phase flow, enhanced heat transfer.

My research interests have been directed toward convective single- and two-phase heat transfer and the associated fluid flow with the emphasis on these processes in heat exchangers. This research has been experimentally based, but numerical analysis using sophisticated computational fluid dynamics codes that can handle many general situations has been and is being used to complement the experimental work and to suggest additional avenues for investigation.

The two areas of research on which I have focused in the past several years are boiling heat transfer and two-phase crossflow in multi-tube bundles and single-phase enhanced heat transfer in tubes. In the former project we have been investigating the effects of bundle geometry on the various two-phase flow and boiling heat transfer processes. Coupled with this is the study of enhanced boiling surfaces and their performance in tube bundles. In the later investigations, we are studying laminar and turbulent single-phase flows in enhanced tubes, particularly internally-finned tubes, and the effects of fin geometry and variable fluid properties on the heat transfer and pressure drop characteristics.

Selected Publications

"Study of Isoflux Coolers," S. Lalot and M.K. Jensen, Applied Thermal Engineering (2000) (In press)

"Fin efficiency of annular fins made of two materials," S. Lalot, C. Tournier, and M.K. Jensen, International Journal of Heat and Mass Transfer, Vol. 42, pp. 3461-3467 (1999).

"Numerical investigation of turbulent flow and heat transfer in internally finned tubes," Xiaoyue Liu and Michael K. Jensen, Journal of Enhanced Heat Transfer, Vol. 6, pp. 105-119 (1999).

"Experimental investigation of turbulent heat transfer and fluid flow in internally finned tubes," M. K. Jensen and A. Vlakancic, International Journal of Heat and Mass Transfer, Vol. 42, pp. 1343-1351 (1999).

"Experimental investigation of turbulent heat transfer and fluid flow in internally finned tubes with surface roughness," J.H. Kim and M.K. Jensen, Heat Transfer 1998, Proceedings of the 11th International Heat Transfer Conference, Vol. 3, pp. 33-38, 23-29 August, Kyongju, Korea.

"Combined convection and non-gray radiation in simultaneously developing turbulent flow and heat transfer," T. Seo, M.K. Jensen, and D.A. Kaminski, Heat Transfer 1998, Proceedings of the 11th International Heat Transfer Conference, Vol. 7, pp. 337-342, 23-29 August, Kyongju, Korea.

"Pressure Drop with Highly Subcooled Flow Boiling in Small Diameter Tubes," W. Tong, A.B. Bergles, and M.K. Jensen, Experimental Thermal and Fluid Science, Vol. 15, pp. 202-212 (1997).

"Void Fraction Distributions in a Kettle Reboiler," J.G. Gebbie and M.K. Jensen, Experimental Thermal and Fluid Sciences, Vol. 14, 297-311 (1996).

"Phenomenological Model of Pool Boiling From Enhanced Surfaces in Binary Mixtures," R.R. Trewin, M.K. Jensen, and A.E. Bergles, in Process, Enhanced, and Multiphase Heat Transfer, Eds. R.M. Manglik and A.D. Kraus, Begell House: New York, 127-134 (1996).

"Experimental Investigation of Laminar Flow and Heat Transfer in Internally-Finned Tubes," B. Shome and M.K. Jensen, Journal of Enhanced Heat Transfer, Vol. 4, 53-70 (1996).

"Numerical Investigation of Laminar Flow and Heat Transfer in Internally-Finned Tubes," B. Shome and M.K. Jensen, Journal of Enhanced Heat Transfer, Vol. 4, 35-51 (1996).

"The Literature on Enhancement of Convective Heat and Mass Transfer," A.E. Bergles, M.K. Jensen, and B. Shome, Journal of Enhanced Heat Transfer, Vol. 4, 1-6 (1996).

"An Interfacial Friction Factor Correlation for Shell-Side Vertical Two-Phase Cross-Flow Past Horizontal Inline and Staggered Tube Bundles," F.H. Rahman, J.G. Gebbie, and M. K. Jensen, International Journal of Multiphase Flow, Vol. 22, 753-766 (1996).

"Turbulent Flow in Longitudinally Finned Tubes," D.P. Edwards, A. Hirsa, and M.K. Jensen, Journal of Fluids Engineering, Vol. 118, 506-513 (1996).

"Kinetics of Non-Isothermal Recrystallization," F.F. Kraft, R.N. Wright, and M.K. Jensen, Journal of Materials Engineering and Performance, Vol. 5, 213-219 (1996).

"Local Heat Transfer and Flow Pattern Distributions in a Kettle Reboiler," M.P. King and M.K. Jensen, Two-Phase Flow Modelling and Experimentation 1995, C.P. Celata and R.K. Shah (eds.), Edizioni ETS, Vol.2, 1289-1296 (1995).

"Pressure Drop with Highly Subcooled Flow Boiling in Small Diameter Tubes," W. Tong, A.E. Bergles, and M.K. Jensen, Two-Phase Flow Modelling and Experimentation 1995, C.P. Celata and R.K. Shah (eds.), Edizioni ETS, Vol.1, 617-628 (1995).

"Critical Heat Flux and Pressure Drop of Subcooled Flow Boiling in Small-Diameter Tubes with Twisted-Tape Inserts," W. Tong, A.E. Bergles, and M.K. Jensen, Journal of Enhanced Heat , Vol. 3, 95-108 (1995).