Thanks for the great questions.

Our Panel Flow add-on for Caedium is a first-order potential-based panel method as described by Katz and Plotkin in their book Low Speed Aerodynamics. It solves for constant strength doublets. Constant strength sources incorporate the Dirichlet boundary condition for thick bodies.

Inlets and outlets are catered for by modifying the source strength to allow transpiration.

The model size is limited only by your available memory. The memory requirement, in bytes, for our panel solver is approximately equal to the number of surface panels (cells) squared and multiplied by 4 (size of a float). For example, to solve for 10,000 surface cells the solver requires 400,000,000 bytes or 381 Mbytes. The storage requirements of the geometry, mesh and flow solution are not included in this estimate. We have not implemented a fast multipole method.

Our wake model uses pseudo time-stepping for steady-state simulations and is time-accurate for unsteady (transient) simulations. For unsteady simulations you need to either use our Transient add-on or our Professional add-on which also includes our Panel Flow add-on.

Hope this helps.