Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.

Understanding the dynamics of transition to turbulence in shear flows has been a long standing problem, and although substantial progress has been made in various directions to this effect, there is still no consistent theory. As prt of AFOSR MURI project 'Uncertainty Management in Complex Systems' at the California Institute of Technology (CalTech) with John Doyle as the principal investigator, a novel theory was developed on the transition to turbulence borrowing notions from control theory. This provides a promising framework that will help explain the various experimental observations of transition to turbulence. In order to make an accurate comparison between theory, computation and experiment, a boundary layer experiment was designed using state of the art, three-dimensional, instantaneous measurement techniques. In this report we discuss the details of the experiment and its connections with the ongoing theory and computations.

A new edition of the bestseller on convection heat transfer A revised edition of the industry classic, Convection Heat Transfer, Fourth Edition, chronicles how the field of heat transfer has grown and prospered over the last two decades. This new edition is more accessible, while not sacrificing its thorough treatment of the most up-to-date information on current research and applications in the field. One of the foremost leaders in the field, Adrian Bejan has pioneered and taught many of the methods and practices commonly used in the industry today. He continues this book's long-standing role as an inspiring, optimal study tool by providing: Coverage of how convection affects performance, and how convective flows can be configured so that performance is enhanced How convective configurations have been evolving, from the flat plates, smooth pipes, and single-dimension fins of the earlier editions to new populations of configurations: tapered ducts, plates with multiscale features, dendritic fins, duct and plate assemblies (packages) for heat transfer density and compactness, etc. New, updated, and enhanced examples and problems that reflect the author's research and advances in the field since the last edition A solutions manual Complete with hundreds of informative and original illustrations, Convection Heat Transfer, Fourth Edition is the most comprehensive and approachable text for students in schools of mechanical engineering.

Understanding the dynamics of transition to turbulence in shear flows has been a long standing problem, and although substantial progress has been made in various directions to this effect, there is still no consistent theory. As prt of AFOSR MURI project 'Uncertainty Management in Complex Systems' at the California Institute of Technology (CalTech) with John Doyle as the principal investigator, a novel theory was developed on the transition to turbulence borrowing notions from control theory. This provides a promising framework that will help explain the various experimental observations of transition to turbulence. In order to make an accurate comparison between theory, computation and experiment, a boundary layer experiment was designed using state of the art, three-dimensional, instantaneous measurement techniques. In this report we discuss the details of the experiment and its connections with the ongoing theory and computations.