A technique for constructing spatial adaptive grids

New results concerning the technology for adaptive 3D grid generation are obtained. This technology is based on the numerical solution of the inverted one-, two-, and three-dimensional Beltrami and diffusion equations with respect to the monitor metric. The one- and two-dimensional equations are used to generate grids on the edges and the faces of the domain, respectively. The three-dimensional equations are used to generate a grid in the interior of the domain. Examples of adaptive 3D hexahedral and prismatic grids are demonstrated.