Unformatted text preview: facilitated by an unstructured grid may allow more accurate solutions. (3) Convergence CPU time : structured grid calculations usually take less time than an unstructured grid calculation because, to date, the existing algorithms are more efficient. 1 1 1 1 1 1 1 1 1 , 1 1 1 − + − − − + − + + + + + − ij i ij j i j i ij j i j i j i j i ( )⇐ j i U , data stored in a “2D” array ( ) ⇐ i U data stored in a “1D” array So, in order to calculate a residual for all, the neighboring states must be known. Structured : neighbors found by adding/subtracting 1 from cell indices. Unstructured : requires storage of celltocell pointers. ⇒ More storage, slower execution of code. 12 14 11 13 15 10 0 2 9 1 3 8 6 4 7 5...
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 Fall '03
 willcox
 Dynamics, Aerodynamics, 1 j, 1 J, Unstructured grid, unstructured grid generation, unstructured grid calculation

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