In: Journal of Hydrology and Hydromechanics, vol. 63, no. 1
K.m. Assefa - D.r. Kaushal
Detaily:
Rok, strany: 2015, 13 - 20
Kľúčové slová:
Bingham fluid; Smooth pipe; Laminar flow; Turbulent flow; Friction factor; Reynolds number; Correlations;
Statistical parameters.
URL originálneho zdroja: http://www.ih.savba.sk/jhh
O článku:
A number of correlations for friction factor determinations in smooth pipes have been proposed in the past
decades. The accuracy and applicability of these friction factor formulas should be examined. Based on this notion the
paper is designed to provide a comparative study of friction factor correlations in smooth pipes for all flow regimes of
Bingham fluids. Nine models were chosen. The comparisons of the selected equations with the existing experimental
results, which are available in the literature, were expressed through MARE, MRE+, MRE-, RMSE, Ѳ, and S. The
statistical comparisons were also carried out using MSC and AIC. The analyses show that the Wilson-Thomas (1985)
and Morrison (2013) models are best fit models to the experimental data for the Reynolds number up to 40000. Within
this range, both models can be used alternately. But beyond this Re value the discrepancy of the Wilson-Thomas model
is higher than the Morrison model. In view of the fact that the Morrison model requires fewer calculations and
parameters as well as a single equation is used to compute the friction factor for all flow regimes, it is the authors’ advice
to use this model for friction factor estimation for the flow of Bingham fluids in smooth pipes as an alternative to the
Moody chart and other implicit formulae.
Ako citovať:
ISO 690:
Assefa, K., Kaushal, D. 2015. A comparative study of friction factor correlations for high concentrate slurry
flow in smooth pipes. In Journal of Hydrology and Hydromechanics, vol. 63, no.1, pp. 13-20. 0042-790X (until 2019) .
APA:
Assefa, K., Kaushal, D. (2015). A comparative study of friction factor correlations for high concentrate slurry
flow in smooth pipes. Journal of Hydrology and Hydromechanics, 63(1), 13-20. 0042-790X (until 2019) .