Search
2 articles for “Shields criterion”
-
The Influence of Sediment Deposits in the Threshold Criteria of Sediment Movement in Rigid Boundary
Abstract: An effort is made to develop a simplified methods for the estimation of bed shear stress for rigid boundary for initiation of sediment motion using different bed thickness, bed slopes and different sediment particles diameters (ranging between (0.5mm < d50 < 4.78). The findings were compared with the earlier studies demonstrating that critical shear parameter value for fixed beds is less than the reported values in literature. This come in …
Published in Recent Trends in Civil Engineering & Technology · Vol. 11, Issue 3, 2021 · pp. 31–39 Read article
-
The Time and Frequency Response of Shielded Transformer Windings
Abstract: A distributed-parameter model is presented for the transient and frequency analysis of power transformers’ windings in the presence of electrostatic shielding, a technique occasionally applied for improving their initial voltage distribution. The s-domain solution takes into account the windings’ circuit parameters with special emphasis on the additional distributed capacitances between the windings’ conductors and the conducting shield which is connected to the windings’ line terminal. The closeness of the resulting …
Published in Journal of Power Electronics and Power Systems · Vol. 4, Issue 2, 2014 · pp. 33–47 Read article