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Parameter for the volume elasticity of a fluid, comparable to the modulus of elasticity of solid substances. Unlike the modulus of elasticity, however, the (genuine) bulk modulus is not a constant val

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 s

Characteristic whereby every genuine fluid reduces in volume under pressure. The compressibility associated with mineral oil is also dependent on the temperature and the kind of change of state involv

Occasionally used inverse of the bulk modulus :

Disc-shaped piston with a vulcanised double pot seal or the like and combining the functions of a piston, piston guide and seal (Figure K 24) .

Hydrostatic transmission involving a pump combined with a motor in a block design. In general, stationary forms of hydrostatic transmission are designed as an integral hydrostatic transmission whereby

Wear occurring at metallic surfaces as a result of cavitation causing vapour bubbles to form and collapse under certain conditions, with the surface of the material suffering mechanical stress if thes

Term for a specific type of control whereby functions are performed one after the other. The technique in question, which involves optimising how a device is used, has now been overtaken by synchronou

Also referred to as multi-loop controllers, these are controllers where, in addition to the actual controlled variable such as the position, one or more other variables such as the velocity and/or acc

Flow resistor which takes the form of a cylindrical pipe and whose length is much greater than the diameter d. For Newtonian fluids, the flow rate through these kinds of flow resistors is mainly deter