One method of quantifying local loss is to examine the local adiabatic compression efficiency defined in Eq. (28) at the exit of the two stages. In this case, (Pt,out, Tt,out) are taken to be the local value instead of the mass-averaged exit value. Shown in Fig. 31 and Fig. 32 are CFD results of time-averaged adiabatic compression efficiency as a function of angular location at the exit of the first and second stages, respectively. Note that local compression efficiency was computed relative to the upstream inlet conditions. Therefore, the compression efficiency reported in Fig. 32 after the second stage is for both stages of the fan. The data are presented for the 4000 rpm case.