Knowledge Base

This section of the FLUIDON webpage is intended to give advices and examples to questions, that arise frequently during the dynamic simulation of complex hydraulic and pneumatic systems.

Because accurate simulation models are always also good representations of real wold fluid power systems, the given tips and tricks can be transferred also onto the analysis of such Systems.

Friction due to pipe flow

Laminar and turbulent friction. Laminar - when the fluid flows in parallel layers. Turbulent - when the motion is chaotic.

Discrete pressure losses

Discrete pressure drops result from local disturbances of the velocity profile caused by different mechanisms.

Womersley-number

The Womersley number expresses the ratio of inertial to viscous forces in harmonically oscillating pipe flows.

Impedance

In hydraulics, the ratio of pressure waves to volume flow waves is referred to as impedance, following the example of electrical engineering.

Friction due to pipe flow

Laminar and turbulent friction. Laminar - when the fluid flows in parallel layers. Turbulent - when the motion is chaotic.

Discrete pressure losses

Discrete pressure drops result from local disturbances of the velocity profile caused by different mechanisms.

Womersley-number

The Womersley number expresses the ratio of inertial to viscous forces in harmonically oscillating pipe flows.

Impedance

In hydraulics, the ratio of pressure waves to volume flow waves is referred to as impedance, following the example of electrical engineering.