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As we celebrate the 20th year of publishing archival contributions in theJournal of Enhanced Heat Transfer (JEHT), it is appropriate to reflect upon its journey since the inaugural issue (vol. 1, no. 1, 1993); the second through fourth issues of the first volume of what was then a quarterly publication were printed in 1994. In starting this journal, the objective of its founding editor, Late Professor Ralph L. Webb (1934–2011), was “to make JEHT ‘ the place’ to publish important papers on enhanced heat transfer, and to find the ‘ pulse’ of industrial application” (Webb, 1994a). For the latter, a Technology Reviewsection was included and so designated editors were appointed to seek “publishable information from engineers in industrial organizations” (Webb, 1994b). In an implicit acknowledgement of this goal, and recognize-ing that industrial practice of that time had “led the way in the creation and development of enhanced heat surfaces and their application” (Webb, 1994b), the dedicated publishing of new research has always had a broader scope by includinghigh performanceheat and mass transfer. This objective, however, is underscored by new advancements in science, engineering, and application of “intentional” methods for improving the heat or mass transfer of a device or system over that prevailing in “normal” usage. An elaborate taxonomy, developed by our founding advisory editor, Professor Arthur E. Bergles (1983), characterizes the different enhancement methods. With its early beginnings in 1965 as a project for a survey and evaluation of the literature on enhanced heat transfer at that time (Bergles and Morton, 1965), the effort to widely disseminate the growing technical information evolved into a full-fledged computerized library of citations and the first of its kind comprehensive bibliography was published by Bergles et al. (1983); this was accompanied with a physical library with hard copies of over 95% citations on hand. This compilation has since grown considerably (Manglik and Bergles, 2004) and has been supplemented by periodic updates (Manglik and Bergles, 2004; Bergles et al., 1991; Jensen and Shome, 1994), which include reports that have targeted specific modes of heat transfer and/or applications (Bergles et al., 1991; Jensen and Shome, 1994; Manglik and Bergles, 2002).

PREFACE: THE ENDURING RELEVANCE OF ENHANCED HEAT AND MASS TRANSFER