LDV Investigation of the Self Induced Pre-Swirl and Flow Visualization at the Centrifugal Pump Inlet and Outlet
Само за регистроване кориснике
2022
Конференцијски прилог (Објављена верзија)
,
©2022 IAHR. Used with permission / ISSN-L 2521-7119
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Приказ свих података о документуАпстракт
Turbulent swirling flow occupies attention of numerous researchers worldwide. In this paper are presented experimental results of the research of the self induced pre-swirl by the centrifugal impeller. Circumferential velocity was measured in two cross-sections by use of the one-component laser Doppler velocimetry (LDV) system. Flow visualization at the pump inlet, as well as at the pump outlet, was conducted by using the high speed camera Photron Fastcam SA1.1 and the LED light for illumination. Air bubbles were used for flow illumination, and silver coated particles for LDV measurements. Pump characteristics (head, volume flow rate and power) are, also, measured in the tested duty point. Pre-swirl is visualized, while almost developed uniform turbulent flow is documented at the pump casing outlet. By using LDV it was possible to identify almost solid body circumferential velocity profile at the pump inlet, only 0.5D upstream, where D is pipe inner diameter. So, the influence of the i...mpeller suction is obvious. In paper is, also discussed statistics of the generated turbulence.
Кључне речи:
Centrifugal pump / Pre-swirl / Turbulence / Laser Doppler velocimetry / Flow visualization / Statistics of turbulenceИзвор:
39th IAHR World Congress, Proceedings, Ed.: Miguel Ortega-Sánchez, No. 06-08-039-1817, June 19-24th, Granada, Spain, 2022, 5264-5270Финансирање / пројекти:
- Примена савремених мерних и прорачунских техника за изучавање струјних параметара вентилационих система на моделу енергетски изузетно ефикасног (пасивног) објекта (RS-MESTD-Technological Development (TD or TR)-35046)
URI
https://www.iahr.org/library/infor?pid=21378https://cmswebonline.com/iahr2022/epro/html/06-08-039-1817.xml
https://machinery.mas.bg.ac.rs/handle/123456789/5573
Колекције
Институција/група
Mašinski fakultetTY - CONF AU - Čantrak, Đorđe AU - Janković, Novica AU - Ilić, Dejan AU - Nedeljković, Miloš PY - 2022 UR - https://www.iahr.org/library/infor?pid=21378 UR - https://cmswebonline.com/iahr2022/epro/html/06-08-039-1817.xml UR - https://machinery.mas.bg.ac.rs/handle/123456789/5573 AB - Turbulent swirling flow occupies attention of numerous researchers worldwide. In this paper are presented experimental results of the research of the self induced pre-swirl by the centrifugal impeller. Circumferential velocity was measured in two cross-sections by use of the one-component laser Doppler velocimetry (LDV) system. Flow visualization at the pump inlet, as well as at the pump outlet, was conducted by using the high speed camera Photron Fastcam SA1.1 and the LED light for illumination. Air bubbles were used for flow illumination, and silver coated particles for LDV measurements. Pump characteristics (head, volume flow rate and power) are, also, measured in the tested duty point. Pre-swirl is visualized, while almost developed uniform turbulent flow is documented at the pump casing outlet. By using LDV it was possible to identify almost solid body circumferential velocity profile at the pump inlet, only 0.5D upstream, where D is pipe inner diameter. So, the influence of the impeller suction is obvious. In paper is, also discussed statistics of the generated turbulence. C3 - 39th IAHR World Congress, Proceedings, Ed.: Miguel Ortega-Sánchez, No. 06-08-039-1817, June 19-24th, Granada, Spain T1 - LDV Investigation of the Self Induced Pre-Swirl and Flow Visualization at the Centrifugal Pump Inlet and Outlet EP - 5270 SP - 5264 DO - 10.3850/IAHR-39WC2521711920221817 ER -
@conference{ author = "Čantrak, Đorđe and Janković, Novica and Ilić, Dejan and Nedeljković, Miloš", year = "2022", abstract = "Turbulent swirling flow occupies attention of numerous researchers worldwide. In this paper are presented experimental results of the research of the self induced pre-swirl by the centrifugal impeller. Circumferential velocity was measured in two cross-sections by use of the one-component laser Doppler velocimetry (LDV) system. Flow visualization at the pump inlet, as well as at the pump outlet, was conducted by using the high speed camera Photron Fastcam SA1.1 and the LED light for illumination. Air bubbles were used for flow illumination, and silver coated particles for LDV measurements. Pump characteristics (head, volume flow rate and power) are, also, measured in the tested duty point. Pre-swirl is visualized, while almost developed uniform turbulent flow is documented at the pump casing outlet. By using LDV it was possible to identify almost solid body circumferential velocity profile at the pump inlet, only 0.5D upstream, where D is pipe inner diameter. So, the influence of the impeller suction is obvious. In paper is, also discussed statistics of the generated turbulence.", journal = "39th IAHR World Congress, Proceedings, Ed.: Miguel Ortega-Sánchez, No. 06-08-039-1817, June 19-24th, Granada, Spain", title = "LDV Investigation of the Self Induced Pre-Swirl and Flow Visualization at the Centrifugal Pump Inlet and Outlet", pages = "5270-5264", doi = "10.3850/IAHR-39WC2521711920221817" }
Čantrak, Đ., Janković, N., Ilić, D.,& Nedeljković, M.. (2022). LDV Investigation of the Self Induced Pre-Swirl and Flow Visualization at the Centrifugal Pump Inlet and Outlet. in 39th IAHR World Congress, Proceedings, Ed.: Miguel Ortega-Sánchez, No. 06-08-039-1817, June 19-24th, Granada, Spain, 5264-5270. https://doi.org/10.3850/IAHR-39WC2521711920221817
Čantrak Đ, Janković N, Ilić D, Nedeljković M. LDV Investigation of the Self Induced Pre-Swirl and Flow Visualization at the Centrifugal Pump Inlet and Outlet. in 39th IAHR World Congress, Proceedings, Ed.: Miguel Ortega-Sánchez, No. 06-08-039-1817, June 19-24th, Granada, Spain. 2022;:5264-5270. doi:10.3850/IAHR-39WC2521711920221817 .
Čantrak, Đorđe, Janković, Novica, Ilić, Dejan, Nedeljković, Miloš, "LDV Investigation of the Self Induced Pre-Swirl and Flow Visualization at the Centrifugal Pump Inlet and Outlet" in 39th IAHR World Congress, Proceedings, Ed.: Miguel Ortega-Sánchez, No. 06-08-039-1817, June 19-24th, Granada, Spain (2022):5264-5270, https://doi.org/10.3850/IAHR-39WC2521711920221817 . .