Micropolar fluids are fluids with microstructure belonging to a class of fluids with nonsymmetrical stress sensor referred to as polar fluids. Physically, they represent fluids consisting of randomly oriented particles suspended in a viscous medium, and they are important to engineers and scientists working with hydrodynamic-fluid problems and phenomena. The goal of this volume is to provide a comprehensive exposition of the principles and methods of micropolar fluids for a broad readership in the science and engineering of fluid mechanics. Organized into three parts, the first part of the book presents the basic model of micropolar fluids, with necessary background information. Provided in the second part is a thorough presentation of the analysis of the mathematics of motion of micropolar fluids, with many detailed examples. Some select and important applications in the topics of lubrication theory and porous media are discussed in the third part. Topics and features of this title include: comprehensive and unified view of the subject, with clear foundations for the basic model; chapter exercises and carefully chosen examples to reinforce the material; coverage of numerical algorithm for behavior of micropolar fluids in a bounded domain; and, discussions of exact solutions for microrotation and velocity fields for some classical fluids flows. This study serves as an up-to-date and comprehensive reference for mathematicians, scientists, and engineers. "Micropolar Fluids" is an essential resource for anyone wishing to understand and needing to use concepts and methods when working with the hydrodynamics of miropolar fluids.