With beta features enabled (as described in Introduction), you can create contour plots of the spatial distribution of certain particle properties from DPM particle sampling on a specific plane surface in the domain. For example, you can create a contour plot of the droplet Sauter mean diameter on a plane orthogonal to the liquid spray direction. In this feature, the plane surface at which the DPM parcel samples are written to a file is divided into squares of a user-specified edge length. The DPM sampling events, which occur when particles cross the plane, are counted in each square. The weighted averages of different quantities are calculated based on the DPM particles sampled in that square. The results are then automatically interpolated into the CFD mesh and made available for graphical postprocessing as named expressions.