Ricerca di "fluids".

Branch of hydraulics . Concerned with the rules governing the flow of fluids with low compressibility and little internal friction. In hydrokinetics, the transmission of energy mainly occurs via the kinetic

metallic surfaces. Therefore, hydraulic fluids must be filtered. Contamination with foreign liquids occurs through the entry of water, mixing with other hydraulic fluids or lubricants. The contamination may

rubber, including radial and shaft seal rings and O-rings. Not suitable for fire-resistant hydraulic fluids from the HFD group. Permissible temperature range -30°C to 100°C. Elastomers

The gear pump is a machine for conveying fluids in accordance with the Positive displacement principle . In principle it consists of three components: a housing with inlet and outlet and two gear wheels

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 determined by the viscous fluid friction

point . The pour point cannot be used to assess the characteristics at low temperatures of pressure fluids based on vegetable oil. This is because time is a factor here, as well as temperature.

Area of hydraulics which works with mineral oil or oil-like hydraulic fluids whose key characteristics are sufficient viscosity coupled with good lubricating performance. All devices used in oil hydraulics

The basis is Bernoulli's equation for ideal, incompressible fluids: = static pressure + dynamic pressure + geodetic pressure. This equation yields the related energy element as The last term ρ · g · h [...] itself apparent where the mass forces of the flowing column of fluid have an effect. As hydraulic fluids are in reality not incompressible, but are compressible, in addition to the energy elements above

to the storage of energy when a mechanical 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

fluid to cover the surface over which it is distributed to a greater or lesser degree. Hydraulic fluids with good wetting ability adhere better to the surface. As a consequence the lubricating film has