Hakuteksti "fluid".

when the local static pressure within a fluid falls below a critical value. This critical value is generally about as high as the vapour pressure for the fluid. Cavitation may take the form of: flow cavitation [...] and gas cavitation, depending on whether the cavitation bubbles contain fluid vapour or a gas such as air dissolved in the fluid. For example, water only dissolves small quantities of air. This is why [...] oscillation cavitation bubble cavitation. Flow cavitation is of particular significance as far as fluid technology is concerned. It mainly occurs where cross sections narrow or widen or where there is a

Vertical height h in m of a column of fluid that, provided the density of the fluid is known, serves as a measure of the pressure that this column applies over the area of its base. The pressure head is

storage. Relevant norms: DIN 20 066 Hose lines in fluid technology DIN 20 078 Hose assemblies in fluid technology DIN 20 024 Hoses and hose line testing in fluid technology Safety rules for hydraulic hose lines [...] components with liquid or gaseous media. Hoses in hydraulic systems, alongside transporting hydraulic fluid to moved consumers ( cylinders , motors ), often have the task of damping pulsations and pressure

eccentric mounting in relation to the rotor. External support requires internal fluid admission in the displacement chambers as fluid drawn is in. Application: vane pumps , valve-less radial piston pumps . Opposite:

removed from the system in the form of heat. In fluid technology, these losses occur due to friction as a result of the viscosity of the pressure fluid, friction in the case of flow disturbances (vortices

Device used to add heat to the hydraulic fluid. It is required where the temperature of the fluid should also be constant at the start of the operating period. The preheating normally takes place electrically

Time that is measured between the hydraulic fluid entering the cylinder and the start of the piston movement.

Pressure created by flow resistances which must be overcome when feeding back the pressure fluid (to the tank).

density of the pressure fluid p 1 - p 2 = pressure before the pressure resistance minus pressure after the flow resistance. The flow coefficient takes into account all losses due to fluid friction and turbulence [...] turbulence on flowing through the resistance. These losses appear in the energy balance as heating of the fluid. The flow coefficient is essentially dependent on the Reynolds number Re and the shape of the edge

Device that indicates the absolute pressure at a measuring point in a hydraulic fluid, referred to a perfect vacuum.