Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4646174 | Applied Numerical Mathematics | 2009 | 8 Pages |
Abstract
We introduce an adaptive POD method to reduce the computational cost of reacting flow simulations. The scheme is coupled with an operator-splitting algorithm to solve the reaction–diffusion equation. For the reaction sub-steps, locally valid basis vectors, obtained via POD and the method of snapshots, are used to project the minor species mass fractions onto a reduced dimensional space thereby decreasing the number of equations that govern combustion chemistry. The method is applied to a one-dimensional, laminar premixed CH4–air flame using GRImech 3.0; with errors less than 0.25%, a speed-up factor of 3.5 is observed. The speed-up results from fewer source term evaluations required to compute the Jacobian matrices.
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