Study of the turbulent swirl flow in the pipe behind the axial fan impeller
Апстракт
Experimental research of the turbulent swirl flow in the pipe behind the axial fan impeller is presented in this paper. Axial fan is inbuilt without guide vanes in the installation with a free inlet and ducted outlet, like it is widely used in the ventilation systems. One-component laser Doppler anemometry and stereo particle image velocimetry (SPIV) are used in two measuring sections on the fan pressure side and for three fan rotation numbers. Non-dimensional axial velocity profile is not significantly transformed downstream, while the circumferential is, although it preserves its character. Turbulence level is the highest in the vortex core in both measuring sections for all velocities. It increases downstream in the vortex core zone and decreases in the main flow region. Determined skewness and flatness factors point out the intermittent character of the generated turbulent swirl flow, as well as the existence of the organized coherent structure. Correlation curves indicate various ...dynamics of fluctuating circumferential velocity fields in measuring points. The Rankine vortex structure of the turbulent swirl flow is also revealed by the SPIV measurements. Analysis shows more dominant vortex core dynamics in the downstream section. Studied flow is characterized by extensive mass, momentum and energy transfer.
Кључне речи:
turbulent swirl flow / PIV / LDA / Axial fanИзвор:
Mechanics & Industry, 2016, 17, 4, 412-Издавач:
- Edp Sciences S A, Les Ulis Cedex A
Финансирање / 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)
DOI: 10.1051/meca/2016016
ISSN: 2257-7777
WoS: 000378085100012
Scopus: 2-s2.0-84973542351
Колекције
Институција/група
Mašinski fakultetTY - JOUR AU - Čantrak, Đorđe AU - Čolić-Damjanović, Vesna Mila AU - Janković, Novica PY - 2016 UR - https://machinery.mas.bg.ac.rs/handle/123456789/2432 AB - Experimental research of the turbulent swirl flow in the pipe behind the axial fan impeller is presented in this paper. Axial fan is inbuilt without guide vanes in the installation with a free inlet and ducted outlet, like it is widely used in the ventilation systems. One-component laser Doppler anemometry and stereo particle image velocimetry (SPIV) are used in two measuring sections on the fan pressure side and for three fan rotation numbers. Non-dimensional axial velocity profile is not significantly transformed downstream, while the circumferential is, although it preserves its character. Turbulence level is the highest in the vortex core in both measuring sections for all velocities. It increases downstream in the vortex core zone and decreases in the main flow region. Determined skewness and flatness factors point out the intermittent character of the generated turbulent swirl flow, as well as the existence of the organized coherent structure. Correlation curves indicate various dynamics of fluctuating circumferential velocity fields in measuring points. The Rankine vortex structure of the turbulent swirl flow is also revealed by the SPIV measurements. Analysis shows more dominant vortex core dynamics in the downstream section. Studied flow is characterized by extensive mass, momentum and energy transfer. PB - Edp Sciences S A, Les Ulis Cedex A T2 - Mechanics & Industry T1 - Study of the turbulent swirl flow in the pipe behind the axial fan impeller IS - 4 SP - 412 VL - 17 DO - 10.1051/meca/2016016 ER -
@article{ author = "Čantrak, Đorđe and Čolić-Damjanović, Vesna Mila and Janković, Novica", year = "2016", abstract = "Experimental research of the turbulent swirl flow in the pipe behind the axial fan impeller is presented in this paper. Axial fan is inbuilt without guide vanes in the installation with a free inlet and ducted outlet, like it is widely used in the ventilation systems. One-component laser Doppler anemometry and stereo particle image velocimetry (SPIV) are used in two measuring sections on the fan pressure side and for three fan rotation numbers. Non-dimensional axial velocity profile is not significantly transformed downstream, while the circumferential is, although it preserves its character. Turbulence level is the highest in the vortex core in both measuring sections for all velocities. It increases downstream in the vortex core zone and decreases in the main flow region. Determined skewness and flatness factors point out the intermittent character of the generated turbulent swirl flow, as well as the existence of the organized coherent structure. Correlation curves indicate various dynamics of fluctuating circumferential velocity fields in measuring points. The Rankine vortex structure of the turbulent swirl flow is also revealed by the SPIV measurements. Analysis shows more dominant vortex core dynamics in the downstream section. Studied flow is characterized by extensive mass, momentum and energy transfer.", publisher = "Edp Sciences S A, Les Ulis Cedex A", journal = "Mechanics & Industry", title = "Study of the turbulent swirl flow in the pipe behind the axial fan impeller", number = "4", pages = "412", volume = "17", doi = "10.1051/meca/2016016" }
Čantrak, Đ., Čolić-Damjanović, V. M.,& Janković, N.. (2016). Study of the turbulent swirl flow in the pipe behind the axial fan impeller. in Mechanics & Industry Edp Sciences S A, Les Ulis Cedex A., 17(4), 412. https://doi.org/10.1051/meca/2016016
Čantrak Đ, Čolić-Damjanović VM, Janković N. Study of the turbulent swirl flow in the pipe behind the axial fan impeller. in Mechanics & Industry. 2016;17(4):412. doi:10.1051/meca/2016016 .
Čantrak, Đorđe, Čolić-Damjanović, Vesna Mila, Janković, Novica, "Study of the turbulent swirl flow in the pipe behind the axial fan impeller" in Mechanics & Industry, 17, no. 4 (2016):412, https://doi.org/10.1051/meca/2016016 . .