mean effectiveness
1.Diffusion coefficients of H 2 and CO in the catalyst pores filled with either supercritical n pentane or heavy paraffinic Fischer Tropsch products (mean relative molecular mass,400) at 483 K and 3.5 MPa,gas concentration profiles within catalyst pores and the inner surface effectiveness factor of the catalyst were simulated and calculated.
2.Simulation results showed the proposed method has preferable effectiveness for AVIS with nonlinearities,and its capacity of vibration isolation is much better than that of FLMS(filtered least mean square).
3.The research result demonstrates that along with the increment of Reynolds number, the root mean square value of outer fluctuating magnitude of the external diameter in fall frequency band increases, the root mean square value of fluctuating magnitude of the external diameter in high frequency band decreses, demonstrating that the fluctuation of flexible pipe wall changes fluctuation don field of original rigid pipe, large-size eddy motion increases and small-size eddy motion decreases, this reduces energy loss and increases friction reduction effectiveness.
4.Add the mixture of LaF_3 and 1.5wt% RJ-2 flux in molten magnesium alloy at 750℃. The experimental result indicate that it has obvious purification effectiveness when adding 0.3wt%~0.5wt% LaF_3, the volume-fraction of the non-metallic inclusion reduces from 0.742% in original magnesium to 0.121%, the mean size of non-metallic inclusions is diminished markedly;
