John L. Lumley – författare

The book provides an up-to-date overview of turbulent flow research in the areas of simulation and modelling. Starting with a review of the spectral dynamics of homogenous and inhomogenous turbulent flows, succeeding chapters deal with numerical simulation techniques, renormalization group methods and turbulent closure modelling. Each chapter is authored by recognized leaders in their respective fields, and each provides a thorough and cohesive treatment of the subject.

The internal combustion engine that powers the modern automobile has changed very little from its initial design of some eighty years ago. Unlike many high tech advances, engine design still depends on an understanding of basic fluid mechanics and thermodynamics. This text offers a fresh approach to the study of engines, with an emphasis on design and on fluid dynamics. Professor Lumley, a renowned fluid dynamicist, provides a lucid explanation of how air and fuel are mixed, how they get into the engine, what happens to them there, and how they get out again. Particular attention is given to the complex issue of pollution. Examples are taken from the early days of engine design, as well as the latest designs, such as stratified charge gasoline direct injection engines. It is intended that the text be used in conjunction with the Stanford Engine Simulation Program (ESP). This user-friendly, interactive software tool answers a significant need not addressed by other texts on engines.

Most childhood fascinations are a passing fancy, but something about cars tends to capture the imagination forever. Witness the countless backyard weed-wrapped classics, rusted just shy of a shadow, slated one day for a return to glory; cloudy vacation memories of choking exhaust, deafening engines and blinding chrome; countless white-knuckled highway moments as the driver faces backwards to better glimpse some passing oddity spotted four lanes over. Somehow, cars have a way of getting into a kid's blood. Any chronic condition requires a lifetime of maintenance. John Lumley caught the fever early--likely from a midnight blue Hudson--and it's been with him ever since.This engaging memoir follows a life spent nursing an obsession with cars, fitting for a son of Detroit's heyday. With occasional play in the garage of the Ford estate and an excursion to see Buckminster Fuller's three-wheeled Dymaxion among his earliest memories, John Lumley's enduring love of cars is no surprise. From those childhood adventures followed a lifetime spent elbow-deep in engines--Nash, Hupmobile, Mercury, Citroen, Triumph, Volkswagen, Lagonda, Armstrong-Siddeley, Bentley and more, many of them pictured. Though his career was devoted to loftier pursuits, the grease beneath his nails perhaps best sums up Lumley's lifelong love. Fifty-eight photographs and an index accompany the text.

Turbulence pervades our world, from weather patterns to the air entering our lungs. This book describes methods that reveal its structures and dynamics. Building on the existence of coherent structures - recurrent patterns - in turbulent flows, it describes mathematical methods that reduce the governing (Navier-Stokes) equations to simpler forms that can be understood more easily. This second edition contains a new chapter on the balanced proper orthogonal decomposition: a method derived from control theory that is especially useful for flows equipped with sensors and actuators. It also reviews relevant work carried out since 1995. The book is ideal for engineering, physical science and mathematics researchers working in fluid dynamics and other areas in which coherent patterns emerge.

This book is a collection of papers presented at a symposium held in honor of Sidney Leibovich. According all papers deal with mathematical or computational aspects of fluid dynamics applied mostly to atmospheric or oceanographic problems. All contributions are research papers having not only the specialist but also graduate students in mind.

This book is a collection of papers presented at a symposium held in honor of Sidney Leibovich. According all papers deal with mathematical or computational aspects of fluid dynamics applied mostly to atmospheric or oceanographic problems. All contributions are research papers having not only the specialist but also graduate students in mind.

The first four symposia in the series on turbulent shear flows have been held alternately in the United States and Europe with the first and third being held at universities in eastern and western States, respectively. Continuing this pattern, the Fifth Symposium on Turbulent Shear Flows was held at Cornell University, Ithaca, New York, in August 1985. The meeting brought together more than 250 participants from around the world to present the results of new research on turbulent shear flows. It also provided a forum for lively discussions on the implications (practical or academic) of some of the papers. Nearly 100 formal papers and about 20 shorter communications in open forums were presented. In all the areas covered, the meeting helped to underline the vitality of current research into turbulent shear flows whether in experimental, theoretical or numerical studies. The present volume contains 25 of the original symposium presentations. All have been further reviewed and edited and several have been considerably extended since their first presentation. The editors believe that the selection provides papers of archival value that, at the same time, give a representative statement of current research in the four areas covered by this book: - Homogeneous and Simple Flows - Free Flows - Wall Flows - Reacting Flows Each of these sections begins with an introductory article by a distinguished worker in the field.

An international group of outstanding scientists presents a balanced discussion of various controversies in current turbulence theory. Six topics from the present-day approach to turbulence are each introduced by a survey, followed by three commentaries and a panel discussion. This analysis evaluates future developments of theories presently used for understanding and modelling turbulent flows.