Numerical Assessment of Nanofluid Natural Convection Using Local RBF Method Coupled with an Artificial Compressibility Model

In this paper, natural heat convection inside square and equilateral triangular cavities was studied using a meshless method based on collocation local radial basis function (RBF). The nanofluids used were Cu-water or -water mixture with nanoparticle volume fractions range of . A system continuity, momentum, energy partial differential equations in modeling the flow temperature behavior fluids. Partial derivatives governing approximated RBF method. artificial compressibility model implemented to overcome pressure velocity coupling problem that occurs such equations. main goal work present simple efficient deal complex geometries for variety conditions. To assess accuracy proposed method, several test cases selected. For Rayleigh numbers ranging from , validation cavity used. numerical investigation then extended number as well nanofluid fraction second investigation, same varying approach non-rectangular geometries. results appear be agreement those earlier investigations. Furthermore, suggested found stable accurate, demonstrating it may viable alternative solving transfer enclosures irregular