Sure there is to get them caculated by yourself. You can refer to Moment inversion of Gordon and Wheeler. You just need to know that DQMOM is a direct quadrature and that is why different to QBMM or QMOM where the moments are required. So at the end you require for every qudarature point the moment to get size and volume fraction being calculated and from that the effective length is produced. The latter as well as the volume fraction information can be used as boundary input.