Piloting line
Hydraulic fluid line for control tasks.
Kinematical viscosity v
kinematic viscosity indicates whether a hydraulic fluid is thin or viscous at a certain temperature, and therefore whether the friction between the fluid layers is lower or higher. This also has an impact [...] dynamic viscosity and a fluid's density: In hydraulics kinematic viscosity is the usual parameter for viscosity. This parameter changes with the temperature of the hydraulic fluid. ν was previously given
Symbols
the function of a fluid device (not its construction design) in accordance with a standard or a key. The symbols were previously known as switching symbols. The symbols used in fluid switching technology
Compression energy EK
Energy stored in a pressure fluid compressed at the pressure p. The storage of energy within a volume of gas or fluid as a result of pressure is comparable to the storage of energy when a mechanical spring [...] spring is compressed ( energy content of a fluid). With fluids, it is almost possible to assume that a constant bulk modulus and isothermal compression apply. The result is as follows: where V K = Compression
Hydrostatic energy
Energy produced by the effect of the pressure of a fluid.
Pressure oscillation
Oscillation in a pressure fluid that is caused by pressure pulsation.
Density function of a liquid
The density of a fluid changes with temperature and pressure. It reduces with temperature and increases with pressure (Figure D 12) . The density-pressure function is determined by, among other things [...] things, the compressibility of the fluid. With β = compression coefficient ρ o = density at atmospheric pressure p a = atmospheric pressure
Bernoulli force
Reaction force generated if a fluid flow changes direction and/or velocity. The force F acts on the fluid from the outside as a supporting force. The force exercised by the flow on the environment is the [...] the flow force The force F acts on the fluid from the outside as a supporting force (reaction force). The force exercised by the flow on the environment is the flow force This Bernoulli force can be seen
Hydrostatic laws
accordance with laws: The viscosity of a fluid, The compressibility of a fluid, The flow behaviour of a fluid, The hydraulic surge (compression surge) in a fluid. [...] basic laws of physics: Pascal's law : (Blaise Pascal, 1623—1662). Every force acting on a stationary fluid generates a pressure that propagates in all directions with the same magnitude. This the basic law [...] hydrostatics . All force and pressure processes in fluids are based on this law. As the hydraulic fluid must be transported from the place it is generated (pump) to the place the energy is given up (motor
Circuit technology
Type of arrangement of electrical or fluid functional elements to achieve certain properties or functions.