Affiliation:
1. University of Cambridge , Cambridge, UK
Abstract
Abstract
Ekman boundary layers play an important role in most rotating flows. This chapter introduces Ekman layers, starting with the exact solutions of Kármán and Bödewadt. The importance of Ekman layers is then illustrated using the simple examples of meandering rivers, secondary flows in ducts, and spin-down in a stirred cup of tea. This is followed by a careful analysis of spin-down and spin-up in cylindrical containers. The chapter closes by discussing the flow between differentially rotating spheres. Some of the concepts involved are surprisingly subtle, and so particular emphasis has been placed on providing a clear physical interpretation of events.
Publisher
Oxford University PressOxford
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