In this paper, we propose a library for the system level modeling and simulation of dynamically reconfigurable architectures( DRAs). Using the proposed library, the designer can model the system specifications including modules for the dynamic generation and elimination that are needed in the design of dynamically reconfigurable systems. In addition, we evaluate the proposed library by the modeling and simulation of sample circuits, such as multi-context DRA and partially DRA. Using the proposed library, we can model the system specifications as much the same amount as a detailed description, such as one using multiplexers and de-multiplexers, which is a modeling formula for describing multi-context DRA. Under some conditions, higher-speed simulation is possible using the proposed library.