WOLFRAM SYSTEMMODELER

Level

General System Dynamics level

Diagram

Wolfram Language

In[1]:=
Click for copyable input
SystemModel["SystemDynamics.Levels.Level"]
Out[1]:=

Information

This is the general continuous Level model of the System Dynamics methodology with a single inflow and a single outflow. It computes the level by integrating over the difference between inflow and outflow rates.

Public Parameters (1)

x0

Value: 0

Type: Real

Description: Initial condition

Outputs (1)

level

Type: Real

Description: Continuous state variable

Connectors (7)

u1

Type: MassInPort

Description: Inflow variable

u2

Type: MassInPort

Description: Outflow variable

y

Type: MassOutPort

Description: State variable

y1

Type: MassOutPort

Description: State variable

y2

Type: MassOutPort

Description: State variable

y3

Type: MassOutPort

Description: State variable

y4

Type: MassOutPort

Description: State variable

Components (2)

Add1

Type: Add

Integrator1

Type: Integrator

Used in Examples (9)

Sugar_Cane

SystemDynamics.IntroductoryExamples

Model of osmosis process in sugar cane

Flu

SystemDynamics.IntroductoryExamples.Influenza

Model of an influenza epidemic

Hair_Lynx_Interaction

SystemDynamics.IntroductoryExamples

Predator/prey model

Gilpin

SystemDynamics.IntroductoryExamples

Gilpin population dynamics model

Scenario_6

SystemDynamics.WorldDynamics.World2

6th Scenario

Scenario_4

SystemDynamics.WorldDynamics.World2

4th Scenario

Scenario_3

SystemDynamics.WorldDynamics.World2

3rd Scenario

Scenario_2

SystemDynamics.WorldDynamics.World2

2nd Scenario

Scenario_1

SystemDynamics.WorldDynamics.World2

1st Scenario

Used in Components (10)

Service_Sector_Investment

SystemDynamics.WorldDynamics.World3

Investments in the service sector

Population_Dynamics

SystemDynamics.WorldDynamics.World3

Population dynamics

Pollution_Dynamics

SystemDynamics.WorldDynamics.World3

Pollution dynamics

Land_Fertility

SystemDynamics.WorldDynamics.World3

Land fertility

Industrial_Investment

SystemDynamics.WorldDynamics.World3

Investments in the military/industrial sector

Retail

SystemDynamics.IndustrialDynamics.Inventory

Retail model

Distribution

SystemDynamics.IndustrialDynamics.Inventory

Distribution model

Factory

SystemDynamics.IndustrialDynamics.Inventory

Factory model

DELAY3

SystemDynamics.Functions

Third-order exponential delaying

DELAY1

SystemDynamics.Functions

First-order exponential delaying