Fluid mechanics¶
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
- Efficiency of hydraulic press from force and height
- Efflux speed via height
- Efflux speed via pressure and density
- Excess pressure under curved surface of bubble
- Froude number formula
- Pressure difference at pipe ends from dynamic viscosity and flow rate
- Hydraulic stress is bulk modulus times strain
- Hydrostatic pressure from density, height and acceleration
- Hydrostatic pressure via density and height
- Inner pressure is constant
- Inner pressure is sum of pressures
- Force to area ratio in hydraulic press
- Capillary rise from surface tension and contact angle
- Mach number is flow speed over speed of sound
- Nusselt number formula
- Pressure of liquid in vessel moving horizontally
- Pressure of liquid in vessel moving vertically
- 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