Stock and flow are fundamental concepts in system dynamics, where 'stock' represents the accumulation of resources or quantities at a particular point in time, while 'flow' refers to the rate at which stock is increased or decreased over time. Understanding the relationship between stock and flow is crucial for analyzing and managing systems in fields such as economics, ecology, and engineering.

Stock And Flow

Stock and flow

fundamental concepts

System dynamics is a methodological framework for understanding the behavior of complex systems over time, using stocks, flows, internal feedback loops, and time delays. It enables the simulation and analysis of how interconnected components interact within a system, providing insights into potential long-term outcomes and policy impacts.

system dynamics

accumulation of resources

quantities at a particular point in time

rate at which stock is increased

Rate at which stock is decreased

relationship between stock and flow

Analyzing systems

managing systems

fields such as economics

Fields such as ecology

Fields such as engineering

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