Objet de la recherche «fluides».

Sound that propagates in a fluid medium. It can have been, but has not necessarily been generated in the fluid. The propagation velocity for mineral oil in steel pipes is approx. 1,300 m/s.

solutions are completely oil-free and more environmentally friendly in general. High Water Based Fluids (HWBF) fluids have the same viscosity as water and may only be used between +5°C and +55°C. They have no [...] Fire-resistant fluids based on water with 2 to 5% concentrate intended to give the water a minimum level of protection against corrosion and wear. Depending on the composition of the concentrate, emulsions [...] each case and the respective user is responsible for mixing the concentrate in. "Thickened water" fluids based on HWBF whereby certain polymers ("water thickeners") are molecularly dispersed in water at

Within a larger system several loads (drive elements) are supplied by one drive power pack. The fluid power system with main pipe can combine such loads, which do not interact, because e.g. they come in

hydrostatic load-bearing layer it is applied from the exterior. The fluid friction is produced in both cases by the internal friction in the fluid that forms the load-bearing layer (DIN 50 281).

Fluids have the characteristic of dissolving certain amounts of gases. In mineral oil this ability increases linearly with pressure up to approx. 300 bar. Dalton's law states: V G = dissolved gas volume [...] volume at the reference pressure V öl = volume of fluid α = Bunsen coefficient for common mineral oils, for air 0.09 and for nitrogen 0.08 p = related absolute pressure p o = reference pressure (atmospheric

Characterises the chemical composition as well as the physical state of a new hydraulic fluid . Here is must be noted that even new oil is never absolutely clean, instead on average it corresponds to filter

readily biodegradable hydraulic fluids are used. These fluids can be produced from mineral oil or using renewable materials. They are also referred to as bio-based hydraulic fluids. [...] the hydraulic fluid conducts away the locally occurring heat and takes with it contamination, which is caused by debris, for example. For this task, mineral oils and flame-resistant fluids are available [...] Hydraulic fluids have the task of transporting hydraulic energy from the location of generation (pump) to the location of conversion ( cylinder , motor) with the minimum possible losses. They are also

Concerned with the physical characteristics and behaviour of fluids at rest (hydrostatics) and when moving (hydrokinetics)

Resistance of a liquid to permanent changes of its properties in normal storage and load conditions (CETOP RP 100).

Distance that is required to form from a turbulent a laminar flow and vice versa. The formation of a laminar flow requires a significantly greater distance.