Grid generation is the process of creating a structured network of points or cells that represent a physical space for computational analysis. This grid serves as the foundation for numerical simulations in various fields, such as fluid dynamics, structural analysis, and heat transfer. By dividing a complex geometry into simpler elements, grid generation allows for more accurate and efficient calculations. There are different methods for grid generation, including structured, unstructured, and hybrid grids. Each method has its advantages depending on the specific requirements of the simulation. Tools and software, such as ANSYS and OpenFOAM, are often used to facilitate the grid generation process, ensuring that the grid conforms to the geometry and captures essential features of the problem being studied.