Periodic solution of turbulent oscillating channel flows

The time-dependent turbulent Navier–Stokes equations are solved numerically by a finite element method with an algebraic eddy viscosity model (Baldwin–Lomax formulation) for oscillating turbulent channel flows. The method of averaging is used to analyse the resulting periodic motion of the fluid. Numerical results are obtained for various Strouhal numbers and relative amplitudes. A comparison is made between the numerical and published experimental results. It appears that for low relative amplitudes in a certain range of frequencies the agreement is satisfactory.     

Amidrazones 10. Stevens rearrangement of 1-benzyl and 1-allyl-substituted-3-amino-4,5-dihydro-1-phenyl-1H-pyrazolium bromides

2-Benzyl-3-imino-1-phenylpyrazolidine (5a) and 2-allyl-3-imino-1-phenylpyrazolidine (5b) are obtained by the base-promoted rearrangement of the title compounds (4a and 4b).     

Temperature dependence of the M2,3 edge in nickel

Thermotransmission measurements have been made of the M_2,3 edge in Ni using synchrotron radiation. The edge shows considerable temperature dependence, apparently that of a gap shift. A fit of one spin-orbit component of the thermotransmission spectrum with the Fano line shape indicates that both Fano parameters, ? and q, are temperature dependent. The fit indicates a temperature dependence of at least two microscopic parameters.