In: Journal of Hydrology and Hydromechanics, vol. 63, no. 2
Arnold M. Talmon
Detaily:
Rok, strany: 2015, 172 - 180
Kľúčové slová:
Stratification; Hydrotransport; Transients; Bed layer.
URL originálneho zdroja: http://www.ih.savba.sk/jhh
O článku:
A bend or any another pipe component disturbs solids transport in pipes. Longitudinal pressure profiles
downstream of such a component may show a stationary transient harmonic wave, as revealed by a recent settling slurry
laboratory experiment. Therefore the fundamental transient response of the two-layer model for fully stratified flow is
investigated as a first approach. A linear stability analysis of the sliding bed configuration is conducted. No stationary
transient harmonic waves are found in this analysis, but adaptation lengths for exponential recovery are quantified. An
example calculation is given for a 0.1 m diameter pipeline.
Also consequences for long stretches of pipe line emerged. A so far undiscovered exclusion zone is found in the I-V
diagram. This exclusion zone is situated adjacent to the deposit limit velocity locus curve. This simplified physical system
reveals that flow velocities should be taken about 10% greater than the calculated maximum deposit limit velocity
for stable converging flow.
Ako citovať:
ISO 690:
Talmon, A. 2015. Linear stability analysis reveals exclusion zone for sliding bed transport. In Journal of Hydrology and Hydromechanics, vol. 63, no.2, pp. 172-180. 0042-790X (until 2019) .
APA:
Talmon, A. (2015). Linear stability analysis reveals exclusion zone for sliding bed transport. Journal of Hydrology and Hydromechanics, 63(2), 172-180. 0042-790X (until 2019) .