System Dynamics Applications

Simple Stock


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System Dynamics Modules

Simple Stock

This module describes a single stock (level or accumulator) with simple inflow and outflow, which might be conceptualised as a bathtub is simultaneously filled through a pipe from a source outside the defined problem space and drained via another pipe to a sink somewhere else outside the defined problem space. By itself, Flowing In increases the contents of STOCK. By itself, Flowing Out decreases the contents of STOCK. There can be any numbers of flows in and flows out. This module is also known as ‘Level’, ‘State’, ‘Accumulator’ or ‘Integration’.
     The description of the module is at
     The module coded in Powersim Studio is at .
     Click here for a run time version of this module.

 

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