Experimental and Numerical Study on Vortical Structures and Their Dynamics in a Pump Sump

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388998%3A_____%2F22%3A00559028" target="_blank" >RIV/61388998:_____/22:00559028 - isvavai.cz</a>

Alternative codes found

RIV/49777513:23210/22:43966465 RIV/28645413:_____/22:N0000005

Result on the web

<a href="https://mdpi-res.com/d_attachment/water/water-14-02039/article_deploy/water-14-02039-v2.pdf?version=1656560682" target="_blank" >https://mdpi-res.com/d_attachment/water/water-14-02039/article_deploy/water-14-02039-v2.pdf?version=1656560682</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/w14132039" target="_blank" >10.3390/w14132039</a>

Result language

angličtina

Original language name

Experimental and Numerical Study on Vortical Structures and Their Dynamics in a Pump Sump

Original language description

Research on water flow in a pump inlet sump is presented. The main effort has been devoted to the study of the vortical structures' appearance and their behavior. The study was conducted in a dedicated model of the pump sump consisting of a rectangular tank 1272 x 542 x 550 mm(3) with a vertical bellmouth inlet 240 mm in diameter and a close-circuit water loop. Both Computational Fluid Dynamics (CFD) and experimental research methods have been applied. The advanced unsteady approach has been used for mathematical modeling to capture the flow-field dynamics. For experiments, the time-resolved Particle Image Velocimetry (PIV) method has been utilized. The mathematical modeling has been validated against the obtained experimental data, the main vortex core circulation is captured within 3%, while the overall flow topology is validated qualitatively. Three types of vortical structures have been detected: surface vortices, wall-attached vortices and bottom vortex. The most intense and stable is the bottom vortex, the surface and wall-attached vortices are found to be of random nature, both in their appearance and topology, they appear intermittently in time with various topologies. The dominant bottom vortex is relatively steady with weak, low-frequency dynamics, typical frequencies are up to 1 Hz. The origin of the vorticity of all large vortical structures is identified in the pump propeller rotation.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20302 - Applied mechanics

Project

<a href="/en/project/EF17_049%2F0008408" target="_blank" >EF17_049/0008408: Hydrodynamic design of pumps</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Water

ISSN

2073-4441

e-ISSN

2073-4441

Volume of the periodical

14

Issue of the periodical within the volume

13

Country of publishing house

CH - SWITZERLAND

Number of pages

27

Pages from-to

2039

UT code for WoS article

000824215700001

EID of the result in the Scopus database

2-s2.0-85133277281