Finite-volume computations are reported for the fully developed turbulent flow through a square-sectioned duct rotating about an axis perpendicular to that of the duct at a Reynolds number of 5 × 104. Two turbulence models are used to represent the turbulent stresses and heat fluxes in the main part of the flow: the standard k-ε eddy-viscosity model (EVM) and an algebraic second-moment closure(ASM). In the semiviscous sublayer adjacent to the wall a generalization of Van Driest's version of the mixing-length hypothesis is adopted. Quadratic upstream discretization of momentum and energy convection is used with grid densities up to 65 × 127.