Abstract

An efficient grid generation scheme has been developed for realistic aircraft configurations. The scheme is based on a zonal approach that simplifies the grid generation process and permits greater flexibility in modeling three-dimensional geometries. In the present scheme, the computational space around a multicomponent aircraft configuration is divided into a number of non-overlappe d blocks whose boundaries define the configuration surfaces and the limits of the computational space. H-type grids are generated independently in each region using a hybrid two-dimensional elliptic/algebraic grid generation algorithm. The block grids are then smoothly patched together along common surfaces to ensure proper transition from one block to another. Examples of the generated grids for fighter aircraft demonstrate the effectiveness of the zonal grid generation scheme in modeling complex configurations.

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