Fluid power

The Hydromechanics (hydro derived from the ancient Greek hydor ὕδωρ, dt water) is a branch of fluid mechanics and fluid dynamics and continuum mechanics. It deals with the mechanical behavior of fluids (liquids and gases ). The Hydromechanics divided into hydrostatics as the doctrine of rest and fluids in hydrodynamics, the theory of moving, ie flowing fluids. Is not negligible compressibility ( density change ) of the fluid, so this is no longer part of the hydrodynamics, but falls within the range of gas dynamics.

An example of a hydrostatic problem is to calculate the pressure gradient in a container filled with water. If one opens a drain in this container, this is to a hydrodynamic problem.

In the technique and mechanics we speak of hydromechanical equipment when performing power train or implementation will be carried with the use of liquids. For example, the torque converter of an automatic transmission of a motor vehicle normally uses hydro-mechanical equipment, by the speed between the drive and driven shaft is adjusted by flowing oil.

• Hydromechanics