FAMUS is a compressible CFD analysis program that uses meshless computational techniques to eliminate the need for volume mesh generation. It was jointly developed by NEXTFOAM and Seoul National University’s Hypersonics Laboratory by transferring the compressible meshless technology from the Agency of Defense Development.

FAMUS is completely different from existing programs that calculate particles using the Lagrangian method or the Lattice Boltzmann Method, as it uses only points distributed in space and calculates them using a method similar to the finite volume method.
FAMUS uses the GC-LSM method, which improves the non-conservatism, a limitation of the existing meshless method, to the FVM level to achieve accuracy. The use of AUSMPW+, MLP3 with third-order spatial accuracy, overcomes numerical instability in shock waves and enables high-order accuracy flow analysis even in the supersonic region.

By using only points without volume mesh, it reduces the excessive pre-processing time of traditional mesh based methods and eliminates the problems of instability and solution inaccuracy. It is also a breakthrough method that can easily implement complex motion of objects, relative motion between multiple objects, deformation of objects, etc. without regenerating volume mesh.

It is a multi-physics simulation program that can analyze plasma phenomena as well as compressible flows. Chemical Equilibrium with CEA from NASA Glenn Research Center can be utilized to implement equilibrium state property tables for over 2000 gases.

Validation Cases

EGLIN Store Separation

Supersonic Sparrow III Missile

Transonic ONERA M6 Wing