Micromixing effects in a reacting plume by the Stochastic Fields method

The Stochastic Fields method for turbulent reacting flows has been used for a reacting plume. The method simulates macromixing with an eddy diffusivity and micromixing by a random walk in scalar space with appropriate models for the scalar dissipation. The numerical technique used for the solution of the stochastic partial differential equation that arises from the stochastic fields method is discussed. The predictions are very close to experimental data for a plume of NO in a O3O3-doped turbulent air flow for a range of Damköhler numbers.