Question: In numerical simulations of premixed flame, the flame thickness cannot be smaller than the grid spacing, while realistic flames can be very thin. In order

In numerical simulations of premixed flame, the flame thickness cannot be

In numerical simulations of premixed flame, the flame thickness cannot be smaller than the grid spacing, while realistic flames can be very thin. In order to make computations possible, such a flame is artificially thickened but in a way that preserves the propagation speed. Suggest a change in the parameters D and c that would make a flame 10 times thicker without altering its propagation speed

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