BrokenTransitionPullThe outflow from A is proportional to the inflow to B |
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Diagram
Information
This information is part of the Business Simulation Library (BSL).
This is a variant of the classical broken flow (→BrokenTransition) structure that allows for a different parameterization: In this component the given value for the rate (rate or u_rate) relates to the rate of inflow to stock B, while the factor of proportionality (factor or u_factor) determines the outflow from stock A that is necessary for this process.
A typical application would be to have a given rate of production (here the stock B would be the stock of finished goods) which needs and outflow from the stock of materials that is proprotional to the rate of production according to a factor determined by the bill of materials.
Hence:
rate of outflow from A = rate of inflow to B × factor of proportionality
The factor of proportionality will be given as amount of A per amount of B, so that the resulting outflow from A will have proper units[amnount of B per second].
Implementation
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Notes
Unlike the classical broken flow structure, setting the rate for the stock B might not take into account the availability of material in the stock A; so this has to be taken care of by the modeler explicitly.
See also
Parameters (4)
| rate |
Value: unspecified Type: Rate (1/s) Description: Constant rate of inflow to the stock B |
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| factor |
Value: 1 Type: Amount (each) Description: Constant factor of proportionality to be multiplied with the outflow from A (default = 1 each [per 1 each]) |
| hasConstantFactor |
Value: false Type: Boolean Description: = true, if the factor is to be given by the constant parameter |
| hasConstantRate |
Value: false Type: Boolean Description: = true, if the outflow rate for A is to be given by the constant parameter |
Connectors (8)
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portA |
Type: FlowPort Description: Flow from/to Stock A |
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portB |
Type: FlowPort Description: Flow to/from Stock B |
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y_B |
Type: RealOutput_B Description: Rate for flow to and from B (positive value indicates inflow) |
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y1_B |
Type: RealOutput_B Description: Rate for flow to and from B (positive value indicates inflow) |
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y1_A |
Type: RealOutput_A Description: Rate for flow to and from A (positive value indicates inflow) |
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y_A |
Type: RealOutput_A Description: Rate for flow to and from A (positive value indicates inflow) |
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u_rate |
Type: RealInput Description: Rate of inflow to B |
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u_factor |
Type: RealInput Description: Factor of proportionality (amount of A per amount of B) |
Components (7)
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flowingOut |
Type: Decline Description: Outflow for stock A |
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u_InflowRate_B |
Type: PassThrough Description: Input of inflow rate for B |
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parInflowRate_B |
Type: ConstantConverterRate Description: Constant rate of inflow to B |
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outflowRate_A |
Type: Product_2 Description: Rate of outflow from stock A |
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flowingIn |
Type: Growth Description: Inflow to stock B |
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u_Factor |
Type: PassThrough Description: Input for factor of proportionality |
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parFactor |
Type: ConstantConverter Description: Constant factor of proportionality |
Revisions
- Value for the optional parameter
ratechanged tounspecifiedin v2.1.0.