Creating a 2D mesh is a fundamental step in computer graphics and finite element analysis. It involves dividing a 2D domain into a set of smaller, connected shapes called elements. The elements can be triangles, quadrilaterals, or other shapes, and they are used to represent the geometry of the domain.
A fluent 2D mesh is one that is well-shaped and has a high quality. It should have elements that are approximately the same size and shape, and it should not have any sharp angles or other features that could cause numerical problems. Fluent meshes are important because they can help to improve the accuracy and efficiency of computer simulations.