Fluid mechanics is the study of how
fluids move and the
forces on them. (Fluids include
liquids and
gases.) Fluid mechanics can be divided into
fluid statics, the study of fluids at rest, and
fluid dynamics, the study of fluids in motion. It is a branch of
continuum mechanics, a subject which models matter without using the information that it is made out of atoms. The study of fluid mechanics goes back at least to the days of ancient Greece, when
Archimedes made a beginning on fluid statics. However, fluid mechanics, especially fluid dynamics, is an active field of research with many unsolved or partly solved problems. Fluid mechanics can be mathematically complex. Sometimes it can best be solved by
numerical methods, typically using computers. A modern discipline, called
Computational Fluid Dynamics (CFD), is devoted to this approach to solving fluid mechanics problems.
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