Proven Solver Technology

ANSYS CFX runs robustly and efficiently for all physical models and flow types including steady-state or transient, incompressible or compressible flows (from low subsonic to hypersonic), laminar or turbulent flows, Newtonian or non-Newtonian flows, and ideal or real gases.

For decades, ANSYS CFX software has focused on a solution strategy using a coupled algebraic multi-grid techniques that delivers fast and reliable convergence that is completely scalable with mesh size, one that requires no user input or numerical adjustments. In addition, it is insensitive to high-aspect ratio mesh cells to allow boundary layers to be captured efficiently and accurately. For maximum accuracy in all simulations, it uses second-order advection schemes by default. The solver delivers excellent performance on all types of problems and is particularly powerful in flows in which inter-equation coupling is significant. Examples of this include rotating flow with strong Coriolis terms, combusting flows and high-speed flow with strong pressure gradients.

Careful discretization is necessary to provide robust and accurate answers to the range of situations encountered in industrial CFD. ANSYS CFX software's default high-resolution discretization delivers on both counts. The adaptive central bounded numeric scheme locally adjusts the discretization to be as close to second order as possible while ensuring stable simulation.

Spray development in internal combustion engines