structured quad mesh with transition zone - Computational Science Stack Exchange

I wonder which software can be used to generate the mesh like below. Anybody has an idea?

navier stokes - Usefulness of elements with mesh-dependent

Horizontal (a) and vertical (b) structure of DOFs (marked with

Discrete Element Modeling

Almost-structured 2d quadrilateral mesh in Gmsh - Stack Overflow

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Inelasticity: Ultimate Load and Localized Failure

Computational simulation of the damage response for machining long

mesh - NDSolve and FEM support for non conformal meshes of a disk

Interface-Reproducing Capturing (IRC) Technique for Fluid

Topography optimisation using a reduced-dimensional model for