Computational investigation of liquid-solid slurry flow through an expansion in a rectangular duct

Title:

Computational investigation of liquid-solid slurry flow through an expansion in a rectangular duct

Creator:

Messa, Gianandrea Vittorio and Malavasi, Stefano

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:aa338f7f-9c14-4be2-b88f-81280dd4dc87
uuid:aa338f7f-9c14-4be2-b88f-81280dd4dc87
doi:10.2478/johh-2014-0021

Subject:

two-fluid model, two-phase flow, turbulent liquid-solid flows, and sudden expansion

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

The flow of a mixture of liquid and solid particles at medium and high volume fraction through an expansion in a rectangular duct is considered. In order to improve the modelling of the phenomenon with respect to a previous investigation (Messa and Malavasi, 2013), use is made of a two-fluid model specifically derived for dense flows that we developed and implemented in the PHOENICS code via user-defined subroutines. Due to the lack of experimental data, the two-fluid model was validated in the horizontal pipe case, reporting good agreement with measurements from different authors for fully-suspended flows. A 3D system is simulated in order to account for the effect of side walls. A wider range of the parameters characterizing the mixture (particle size, particle density, and delivered solid volume fraction) is considered. A parametric analysis is performed to investigate the role played by the key physical mechanisms on the development of the two-phase flow for different compositions of the mixture. The main focuses are the distribution of the particles in the system and the pressure recovery.

Language:

Slovak

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

234-240

Source:

Journal of hydrology and hydromechanics | 2014 Volume:62 | Number:3

Harvested from:

CDK

Metadata only:

false