流体力学: オープンアクセス

Fundamentals of Fluid Mechanics

Abstract

David A. Rubenstein

Fluid mechanics is that the study of fluids at rest and in motion. A fluid is defined as a cloth that continuously deforms under a continuing load. There are five relationships that are most useful in hydraulics problems: kinematic, stress, conservation, regulating, and constitutive. The analysis of hydraulics problems are often altered counting on the selection of the system of interest and therefore the volume of interest, which govern the simplification of vector quantities. By assuming that a fluid may be a continuum, we make the idea that there are not any in homogeneities within the fluid. Viscosity relates the shear rate to the shear stress. Definition of a fluid as Newtonian depends on whether the viscosity is constant at various shear rates. Newtonian fluids have constant viscosities, whereas non-Newtonian fluids have a nonconstant viscosity. for many bio fluid applications, we'll assume that the fluid is Newtonian.