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The angular distribution of solute molecules, and the space-averaged stresses in the fluid, are computed for steady shear flows of solutions of rigid dumbbells. The computation is done by Galerkin's method, with spherical harmonics as the trial functions. The stresses are tabulated for the full range of shear rates, 0⩽λhκ⩽∞, and dumbbell width/length ratios, 0⩽h⩽38. The stress components become power functions of shear rate when the latter is large. The analogy of Cox and Merz bolds better for small width/length ratios (h≐0) than for large ones.

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Inserting a positively biased electrode to just inside the Phaedrus-T tokamak limiter results in typical H mode behaviour (i.e. Hα or Dα drop, density rise, increase in stored energy, profile steepening, and reduction of edge turbulence and radial transport) in deuterium, hydrogen and helium discharges. Hα or Dα emission suggests that the improvement in particle confinement with H mode is poloidally asymmetric, with the greatest improvement occurring on the low field side. The radial conductivity is examined and measured values are compared with theory