This paper investigates the local mixture fraction field in inter-droplet regions in turbulent evaporating droplet arrays. An accurate description of the mixture fraction field is essential for non-premixed combustion modelling. In the present paper, three-dimensional direct numerical simulations of methanol droplets in hot environments are presented. Scalar dissipation and probability density functions of mixture fraction are assessed and a multi-conditioning model based on mixture fraction and structural parameters is proposed. It is found that conditional scalar dissipation profiles follow an inverse error function similarly to non-premixed flamelet modelling. The time-average mixture fraction behaviour can be represented with a beta-distribution in both laminar and turbulent cases.
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