Colburn, Allan

In July, 1977, M.I.T. announced the appointment of Dr. James Wei, ScD, 55, as Warren K. Lewis Professor of Chemical Engineering and Head of the Department. Dr. Wei had conducted distinguished industrial research on catalysis and reaction engineering at Mobil Oil Corp., followed by appointment as the Allan P. Colburn Professor at the University of Delaware. He also had been accorded visiting professorships at Princeton and the California Institute of Technology. For the first six... 

ARUP K. CHAKRABORTY is a professor of chemical engineering and professor of chemistry at the University of California, Berkeley. His research interests are in polymeric materials science and engineering, interfacial phenomena, zeolite catalysis and separations, quantum mechanics, and statistical mechanics. Dr. Chakraborty received his Ph.D. in chanical engineering from the University of Delaware and was a postdoctoral feUow in chemical engineering and materials science at the University of Minnesota. His awards include research professor, Miller Institute for Basic Science, Berkeley the Allan P. Colburn Award from AIChE, the Camille Dreyfus Teacher-Scholar Award, and the NSF Young Investigator Award. 

Chilton-Colburn analogy A widely used analogy from heat momentum, and mass transfer analogies. Also known as -factors, they are used to determine an unknown transfer coefficient when one of the other coefficients is known. It applies to fully developed turbulent flow in pipes, and relates mass and heat transfer coefficients, and friction factors. It was proposed by and named after American chemical engineers Thomas H. Chilton (1899-1973) and Allan P. Colburn (1904-55). 

J-factor A dimensionless factor used in heat and mass transfer of fluids with turbulent flowin pipes. It isafunctionofReynolds number, geometry, and boundary conditions from which the friction factor can be obtained and agrees well with convective heat transfer correlations orfor detemiiningheattransfercoefficients.lt was proposed by Americanchemi-cal engineer Allan P. Colburn (1904-55) and forms part of the Chilton-Colbum analogy, which is used in heat, momentum, and mass transfer. 

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