WOLFRAM SYSTEMMODELER

GasForce2

Rough approximation of gas force in a cylinder

Wolfram Language

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SystemModel["Modelica.Mechanics.MultiBody.Examples.Loops.Utilities.GasForce2"]
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Information

This information is part of the Modelica Standard Library maintained by the Modelica Association.

The gas force in a cylinder is computed as function of the relative distance of the two flanges. It is required that s_rel = flange_b.s - flange_a.s is in the range

    0 ≤ s_rel ≤ L

where the parameter L is the length of the cylinder. If this assumption is not fulfilled, an error occurs.

Connectors (2)

flange_a

Type: Flange_a

Description: Left flange of compliant 1-dim. translational component

flange_b

Type: Flange_b

Description: Right flange of compliant 1-dim. translational component

Parameters (5)

L

Value:

Type: Length (m)

Description: Length of cylinder

d

Value:

Type: Length (m)

Description: Diameter of cylinder

k0

Value: 0.01

Type: Volume (m³)

Description: Volume V = k0 + k1*(1-x), with x = 1 - s_rel/L

k1

Value: 1

Type: Volume (m³)

Description: Volume V = k0 + k1*(1-x), with x = 1 - s_rel/L

k

Value: 1

Type: HeatCapacity (J/K)

Description: Gas constant (p*V = k*T)

Used in Examples (3)

Engine1b

Model of one cylinder engine with gas force and preparation for assembly joint JointRRP

Engine1b_analytic

Model of one cylinder engine with gas force and analytic loop handling

Engine1bBase

Model of one cylinder engine with gas force