tecplot doesnt recongise grid boundary in external flow

The grid that is selected for CFD simulations will define the accuracy and resolution of the simulation results, both of which will affect the computation time and level of detail in the results. Grid generation in CFD refers to a set of techniques for defining a numerical mesh throughout the system to be simulated. When generating meshes for these simulations, it’s your job to understand how discretization in a numerical model influences accuracy and what you’ll be able to observe in your results. Therefore, it’s important to have some knowledge of numerical methods as well as how they are executed in computational simulation. However, as a working engineer, you can’t work out every problem by hand. Numerical methods for solving partial differential equations are advanced topics not normally taught in undergraduate engineering classes. More advanced meshing techniques do not use Cartesian or structured grids, instead, they apply polynomial curves and interpolation schemes to generate the mesh and results.

The grid generation method that is used in a problem will try to match the mesh to the geometry of the system being simulated. Mesh generation in CFD simulations plays the same role as meshing in finite element simulations, where discretization will determine the accuracy and computation time in the simulation.

Tecplot doesnt recongise grid boundary in external flow