Flux conservation is a principle stating that, for a closed system, the amount of a quantity passing through a surface remains constant if there are no sources or sinks present. This underlies many important physics laws, including conservation of electric charge and the continuity equation in fluid dynamics.

Flux Conservation

A closed system is a physical system that does not exchange matter with its surroundings but can exchange energy. It is often used in thermodynamics to simplify the analysis of energy transformations by focusing on energy exchanges only.

Closed System

Amount of a quantity

Quantity passing through a surface

Sources or sinks

Physics laws

Conservation of electric charge

The continuity equation is a fundamental principle in fluid dynamics that expresses the conservation of mass in a fluid flow system. It states that the mass flow rate of a fluid must remain constant from one cross-section of a pipe to another, assuming steady flow and incompressibility of the fluid.

Continuity Equation

Fluid dynamics is a branch of physics that studies the behavior of fluids (liquids and gases) in motion and the forces acting on them. It is essential for understanding natural phenomena and designing systems in engineering disciplines, including aerodynamics, hydrodynamics, and meteorology.

Concepts

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