This paper argues that interpersonal comparisons of utility levels are difficult in principle and that interpersonal comparisons of utility differences can also hardly be defined based solely on individual choice behavior. Copyright Springer-Verlag 1984

The flow field of a nozzle starting process with thermal and chemical nonequilibrium has been simulated. This flow is produced in high enthalpy impulse facilities such as the free piston shock tunnel. The governing equations are the axisymmetric, compressible Navier–Stokes equations. In this...