Fluid mechanics is the subdiscipline of continuum mechanics that studies fluids, that is, liquids and gases.
It can be further subdivided into fluid statics, the study of fluids at rest, and fluid dynamics, the study of fluids in motion.
Fluids are composed of molecules that collide with one another and solid objects.
The continuum assumption, however, considers fluids to be continuous.
That is, properties such as density, pressure, temperature, and velocity are taken to be well-defined at infinitely small points, and are assumed to vary continuously from one point to another.
The fact that the fluid is made up of discrete molecules is ignored.
Mechanics Mechanics can be seen as the prime, and even as the original, discipline of physics. It is a huge body of knowledge about the natural world. It also ... >
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Fluid dynamics Fluid dynamics is the subdiscipline of fluid mechanics that studies fluids (liquids and gases) in motion. The discipline has a number of ... >
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Viscosity Viscosity is a measure of the resistance of a fluid to deformation under shear stress. It is commonly perceived as "thickness", or resistance to ... >
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Aerodynamics Aerodynamics (shaping of objects that affect the flow of air, liquid or gas) is a branch of fluid dynamics concerned with the study of forces and gas ... >
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Shear stress In physics, shear stress is a stress state in which the shape of a material tends to change (usually by "sliding" forces -- torque by ... >
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Turbulence In fluid dynamics, turbulence or turbulent flow is a flow regime characterized by chaotic, stochastic property changes. This includes low momentum ... >
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Mechanical engineering Mechanical engineering is a very broad field of engineering that involves the application of physical principles for analysis, design, manufacturing, ... >
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Friction Friction is the force that opposes the relative motion or tendency of such motion of two surfaces in contact. It is also the contact of two objects ... >
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Oscillation Oscillation is the variation, typically in time, of some measure as seen, for example, in a swinging pendulum. The term vibration is sometimes used ... >
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Drag (physics) For a solid object moving through a fluid or gas, drag is the sum of all the aerodynamic or hydrodynamic forces in the direction of the external ... >
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