The major fields of research are treated: Stability phenomena: convective flow, thermal and hydrodynamic systems; Transition, turbulence and separation: boundary-layer, turbulent combustion, rarefied gasdynamics, near wall and off wall flow fields, energy dissipation; Transition flow: homogeneous condensation, shock-waves, effects at Mach number unity; Hypersonic flow: flow over spheres, aerothermodynamics, relaxation; Fluid machinery: axial fans, compressor cascades, fluid couplings; Computational fluid dynamics: passive shock control, zonal computation, cylinderflow, flow over wings; Miscellaneous problems.