On the definition of a computational fluid dynamic solver using cellular discrete-event simulation

•Adapted a Cellular Automata based Computational Fluids Dynamics following the DEVS formalism.•Provides unique insight into the exact nature of the evolving velocity fields.•Implementing variable time-step will increase the efficiency of the solver.•DEVS allows for coupling individual models which allows for increasingly complex models.•Will aid in the simulation of complex systems in biomechanics and engineering fields.

The Discrete Event System Specification (DEVS) has rarely been applied to the physics of motion. To explore the formalism's potential contribution to these applications, we need to investigate the definition of moving gases, liquids, rigid bodies, and deformable solids. Here, we show how to use Cell-DEVS to analyze the movement and interactions of fluids using computational fluid dynamics (CFD). We describe a set of rules that produce the same patterns as traditional CFD implementations. We present the inner workings of the CFD algorithm, the incorporation of solid barriers, and the adoption of variable time steps within the context of biomechanical simulations.