WOLFRAM

WOLFRAM SYSTEM MODELER

RestrictionTurbulent

Turbulent restriction

Wolfram Language

In[1]:=
SystemModel["Hydraulic.Restrictions.RestrictionTurbulent"]
Out[1]:=

Information

This model describes turbulent flow. The flow is defined by the flow equation:



where
:Mass flow rate
:Fluid density
:Discharge coefficient
A:Opening area
:Pressure difference between ports a and b

Implementation

The flow equation is linearized for pressure differences near zero to increase numerical stability.

Limitations

This model is only valid for turbulent flow. No checks are made if it is physically possible that the flow through the component actually is turbulent.

Reference

K. Gieck and R. Gieck, Engineering Formulas, 7th ed., Germering, Germany: Gieck Publishing, 1997 p. N7.

Parameters (3)

medium

Value: Oil()

Type: Medium

Description: Medium in the component
A

Value: 0.001

Type: Area (m²)

Description: Area of the orifice opening
Cd

Value: 0.62

Type: Real

Description: Coefficient of discharge for the orifice

Connectors (2)

port_a

Type: Port_a

Description: Port for hydraulic fluid (filled icon)
port_b

Type: Port_b

Description: Port for hydraulic fluid (unfilled icon)

Components (1)

medium

Type: Medium

Description: Medium in the component

Used in Components (5)

FixedTurbulentThrottle

Hydraulic.Valves.FlowControl

Turbulent restriction

OneWayFlowControlValve

Hydraulic.Valves.FlowControl

Assembly with a restriction and check valve

TwoWayFlowControlValve

Hydraulic.Valves.FlowControl

Assembly with a restriction and a pressure compensating valve

ThreeWayFlowControlValve

Hydraulic.Valves.FlowControl

Assembly with a restriction and a pressure compensating valve

CompoundReliefValve

Hydraulic.Valves.PressureControl

Pilot-operated relief valve