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In physics, physical chemistry and engineering, fluid dynamics is a subdiscipline of fluid mechanics that describes the flow of fluids — liquids and gases. It has several subdisciplines, including aerodynamics (the study of air and other gases in motion) and hydrodynamics (the study of liquids in motion).
Describe the relationship between flow rate and velocity. Explain the consequences of the equation of continuity to the conservation of mass. The first part of this chapter dealt with fluid statics, the study of fluids at rest. The rest of this chapter deals with fluid dynamics, the study of fluids in motion.
Fluid dynamics is the study of the movement of liquids and gases. Fluid dynamics applies to many fields, including astronomy, biology, engineering and geology.
Fluid dynamics, also termed fluid mechanics, is a very important and broad study of fluids in motion, impacting most engineering disciplines, weather and climate modeling, city and home water distribution systems, etc.
Fluid Dynamics is a peer-reviewed journal that focuses on studies of motion, behavior, and interactions of liquids and gases. Covers on aeromechanics, hydrodynamics, plasma dynamics, underground hydrodynamics, and biomechanics of continuous media.
Topics covered in the course include pressure, hydrostatics, and buoyancy; open systems and control volume analysis; mass conservation and momentum conservation for moving fluids; viscous fluid flows, flow through pipes; dimensional analysis; boundary layers, and lift and drag on objects.
A fluid is a state of matter that yields to sideways or shearing forces. Liquids and gases are both fluids. Fluid statics is the physics of stationary fluids. Density is the mass per unit volume of a substance or object, defined as \ (\rho = \frac {m} {V}\). The SI unit of density is kg/m 3.