Stabilization of cell-centered compressible Lagrangian methods using subzonal entropy

This work deals with the stabilization of early stages of Lagrangian calculations of compressible gas dynamics in the context of cell-centered discretization. We describe a totally conservative algorithm based on an entropy analysis of the distortion of a Lagrangian mesh. The resulting scheme is an extension of the cell-centered GLACE scheme [10]. Numerical tests are proposed to assess the accuracy and robustness.