AICFD is described as 'Is universal computational fluid dynamics (CFD) simulation software that is independently developed by Nanjing Tianfu Software Co., Ltd. to quickly and intelligently simulate flows and heat transfer' and is an app. There are more than 10 alternatives to AICFD for Windows, Linux, Mac, Web-based and MATLAB. The best AICFD alternative is COMSOL Multiphysics. It's not free, so if you're looking for a free alternative, you could try FEATool Multiphysics or Elmer. Other great apps like AICFD are SimScale, OpenFOAM, Code_Saturne and Code_Aster.