Computation of critical submergence depth to avoid surface vortices at vertical pumps intakes

Other Title(s)

حسابات العمق الغاطس الحرج لتجنب الدوامات السطحية عند المآخذ العمودية للمضخات

Parallel Title

حسابات العمق الغاطس الحرج لتجنب الدوامات السطحية عند المآخذ العمودية للمضخات

Joint Authors

Kazim, Ali Fakhri
al-Thamiri, Haydar Abd al-Amir Khudayr

Source

Journal of Engineering

Issue

Vol. 26, Issue 8 (31 Aug. 2020), pp.59-68, 10 p.

Publisher

University of Baghdad College of Engineering

Publication Date

2020-08-31

Country of Publication

Iraq

No. of Pages

10

Main Subjects

Mechanical Engineering

Topics

Abstract EN

The pumping station became widely used in many fields.

Free surface vortices at intakes of pumps are not favorable.

It may cause noise, excessive vibration, damage to the pumping structure, reduction in efficiency and flow for hydro-turbines, etc.

One of the important problems encountered during the pump intake design is the depth of submergence and other design parameters to avoid strong free-surface vortices formation.

This study aims to compute the critical submergence depth with some geometrical and hydraulic limitations by using Computational Fluid Dynamic (CFD) package.

The mathematical model was validated with a laboratory model that had been conducted.

The model of three intake pipes was investigated under five different submergence depth (S), three different spaces between intake pipes (b), and five different suction velocities (v).

The results showed the best operation cases when the space between intake pipes (b) equal to 4D, the submergence depth of water is equal or greater than 1.

25 from the bell mouth diameter of intake pipe (D), and the suction velocity less than 2 m/s.

The worst case was when the space between the suction pipe (b) was (2D), in this case, the vortex appeared at submergence depth (S/D = 2) with suction velocity 3 m/s.

American Psychological Association (APA)

Kazim, Ali Fakhri& al-Thamiri, Haydar Abd al-Amir Khudayr. 2020. Computation of critical submergence depth to avoid surface vortices at vertical pumps intakes. Journal of Engineering،Vol. 26, no. 8, pp.59-68.
https://search.emarefa.net/detail/BIM-972849

Modern Language Association (MLA)

Kazim, Ali Fakhri& al-Thamiri, Haydar Abd al-Amir Khudayr. Computation of critical submergence depth to avoid surface vortices at vertical pumps intakes. Journal of Engineering Vol. 26, no. 8 (Aug. 2020), pp.59-68.
https://search.emarefa.net/detail/BIM-972849

American Medical Association (AMA)

Kazim, Ali Fakhri& al-Thamiri, Haydar Abd al-Amir Khudayr. Computation of critical submergence depth to avoid surface vortices at vertical pumps intakes. Journal of Engineering. 2020. Vol. 26, no. 8, pp.59-68.
https://search.emarefa.net/detail/BIM-972849

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references : p. 68

Record ID

BIM-972849