Developed by NASA Ames in 1982, the PLOT3D file format is a standard for storing structured grid geometry and computational fluid dynamics (CFD) simulation data, often utilizing separate files for grid (.xyz) and flow solution (.q) data. It supports 1D, 2D, and 3D simulations in both ASCII and binary formats, with data structures allowing for fast random access and multi-block configurations. Read more about this format at PLOT3D file format – Wikipedia.
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