The influence of obstacles and suspended matter on the distribution of turbulent flow velocities in a lamella separator

Joint Authors

Merrouchi, Faridah
Fourar, Ali
Massouh, Fawwaz
haddad, Djamel
Azawi, Hanane

Source

Journal of New Technology and Materials

Issue

Vol. 7, Issue 1 (30 Jun. 2017), pp.53-63, 11 p.

Publisher

Larbi Ben M'hidi Oum el-Bouaghi University

Publication Date

2017-06-30

Country of Publication

Algeria

No. of Pages

11

Main Subjects

Information Technology and Computer Science

Abstract EN

Lamellar settlers are used for stormwater treatment in order to separate suspended matter form water.

In these settlers, the effective decantation area is increased thanks to the presence of many successive inclined plates.

The problem of lamella settling tank is the inhomogeneous distribution of flow velocity between the inclined plates so this work focuses on the study of turbulent flow and its interaction with the successive plates.

In this perspective, we propose a coupling of Euler and Lagrange approaches in order to model flow and sediment transport.

The numerical model has been implemented in the Fortrancode.

The finite volume scheme (ADI) was adopted as it ensures good precision with reasonable computation time.

The model introduces the Lagrangian time constant CL to determine the size and lifetime of the eddies where the particles move.

For testing our program we first studied the case of turbulent flow around a single plate and then two plates where we found satisfying results.

Then we enlarged our study to study several plates.

The obtained results show that the lamellar elements are efficient to reduce flow velocity and increase the sedimentation rate comparatively to conventional tanks with vertical obstacles or without barriers.

American Psychological Association (APA)

Merrouchi, Faridah& Fourar, Ali& Massouh, Fawwaz& haddad, Djamel& Azawi, Hanane. 2017. The influence of obstacles and suspended matter on the distribution of turbulent flow velocities in a lamella separator. Journal of New Technology and Materials،Vol. 7, no. 1, pp.53-63.
https://search.emarefa.net/detail/BIM-785557

Modern Language Association (MLA)

Merrouchi, Faridah…[et al.]. The influence of obstacles and suspended matter on the distribution of turbulent flow velocities in a lamella separator. Journal of New Technology and Materials Vol. 7, no. 1 (2017), pp.53-63.
https://search.emarefa.net/detail/BIM-785557

American Medical Association (AMA)

Merrouchi, Faridah& Fourar, Ali& Massouh, Fawwaz& haddad, Djamel& Azawi, Hanane. The influence of obstacles and suspended matter on the distribution of turbulent flow velocities in a lamella separator. Journal of New Technology and Materials. 2017. Vol. 7, no. 1, pp.53-63.
https://search.emarefa.net/detail/BIM-785557

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references : p. 62-63

Record ID

BIM-785557