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MapleSim Hydraulics Library from Modelon

Dyn Friction  Dynamic friction block for the TLM longline model - Johnston (2006)

Block has one continuous Real input and one continuous Real output signal.

 

Equations

Variables

Connections

Parameters

Equations

msim/FORmsim/INi#1,1..n,Sum.u[i#1]=8νTg[i#1].yD2,g[i#1].u=u

y=Sum.y

Sum.u[n + 1]=u

Variables

Name

Value

Units

Description

Modelica ID

Sum

 

 

 

Sum

g

 

 

 

g

Connections

Name

Description

Modelica ID

u

Connector of Real input signal

u

y

Connector of Real output signal

y

Parameters

General Parameters

Name

Default

Units

Description

Modelica ID

L

 

m

Total length of line

L

D

 

m

Line diameter

D

a

 

ms

Speed of sound

a

ν

 

m2s

Kinematic viscosity

nu

n

1

 

Number of approx. terms in series

n

initType

[1]

 

Type of initialization (1: no init, 2: steady state, 3: initial state, 4: initial output)

initType

[1] Modelica.Blocks.Types.Init.NoInit

Constant Parameters

Name

Default

Units

Description

Modelica ID

num

 

 

 

num

den

 

 

 

den

T

La

 

 

T

See Also

Lines

MapleSim Hydraulics Library from Modelon Overview

 


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