Progress is reported in the development of a nonlinear Reynolds-stress-tran
sport model for compressible, turbulent flow. The focus is on a variation o
f a particular cubic model that does not require the usual topography-relat
ed parameters, such as normal-to-wall vectors. However, certain wall-proxim
ity corrections that have been used in the model to replace conventional wa
ll-reflection terms display the wrong response to shocks, which are falsely
interpreted as localized regions of strong inhomogeneity. A modified cubic
variant is proposed that allows integration across the semiviscous sublaye
r and incorporates additional constraints to guard against unphysical respo
nse of the pressure-strain model in the vicinity of shock waves. The modifi
ed model is applied to both two- and three-dimensional compressible flows,
involving shock-wave/boundary-layer interaction, and is shown to yield gene
rally favorable results.