Validation of friction factor predictions in vertical slurry flows with coarse particles

Title:

Validation of friction factor predictions in vertical slurry flows with coarse particles

Creator:

Bartosik, Artur

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:bea1f491-ab30-4245-9b3b-a5d9dae84c2a
uuid:bea1f491-ab30-4245-9b3b-a5d9dae84c2a
doi:10.2478/johh-2020-0005

Subject:

flow with coarse particles, particle-wall stress, and modelling of vertical flow

Type:

model:article and TEXT

Format:

počítač and online zdroj

Description:

The paper presents validation of a mathematical model describing the friction factor by comparing the predicted and measured results in a broad range of solid concentrations and mean particle diameters. Three different types of solids, surrounded by water as a carrier liquid, namely Canasphere, PVC, and Sand were used with solids density from 1045 to 2650 kg/m3, and in the range of solid concentrations by volume from 0.10 to 0.45. All solid particles were narrowly sized with mean particle diameters between 1.5 and 3.4 mm. It is presented that the model predicts the friction factor fairly well. The paper demonstrates that solid particle diameter plays a crucial role for the friction factor in a vertical slurry flow with coarse solid particles. The mathematical model is discussed in reference to damping of turbulence in such flows. As the friction factor is below the friction for water it is concluded that it is possible that the effect of damping of turbulence is included in the KB function, which depends on the Reynolds number.

Language:

Slovak

Rights:

http://creativecommons.org/publicdomain/mark/1.0/
policy:public

Coverage:

119-127

Source:

Journal of hydrology and hydromechanics | 2020 Volume:68 | Number:2

Harvested from:

CDK

Metadata only:

false