Fluid mechanicsΒΆ
Fluid mechanics is the branch of physics concerned with the mechanics of fluids (liquids, gases, and plasmas) and the forces on them.
Ideal fluid
An ideal fluid is a model of fluids often used in fluid mechanics to approximate the behavior of real fluids. Ideal fluids are:
non-viscous, i.e. there is no internal resistance to flow;
in steady, or laminar, flow;
incompressible;
irrotational, i.e. its particles undergo no rotation around their center of mass.
Contents:
- Dynamic pressure from speed
- Efflux speed via height
- Efflux speed via pressure and density
- Hydraulic stress is bulk modulus times strain
- Hydrostatic pressure via density and height
- Inner pressure is constant
- Inner pressure is sum of pressures
- Mach number is flow speed over speed of sound
- Reynolds number formula
- Shear stress is proportional to speed gradient
- Submerged volume of floating body via density ratio
- Surface tension force via surface tension and length
- Volume flux is constant
- Weight in fluid via ratio of densities