An Explicit Multi-Model Compressible Flow Formulation Based on the Full Potential Equation and the Euler Equations on 3D Unstructured Meshes∗

摘要: The development of a multi-model formulation to simulate three dimensional compressible flows on parallel computers is presented. goal reduce the overall time and memory required flow by using locally selected cheaper more computational efficient physical models without sacrificing global fidelity simulation. Our approach involves splitting domain into different fluid regions full potential model instead Euler or Navier-Stokes equations in where this approximation valid. We show numerically that solving equation irrotational not only but also improves accuracy; avoiding any numerical generation entropy. main considerations addressed paper are coupling discretization interface conditions between these domains. use fully unstructured finite volume for both equations, condition derived imposing discrete conservation laws control volumes shared regions. 3D transonic simulations around NACA0012 airfoil investigated. Numerical have sufficiently matured be considered accurate engineering design analysis. However, large scale simulations, response remains too software used as an interactive tool even lastest supercomputers. While computing reduces computation proportionally additional resource,