KOLMOGOROV LAW IN ANALYSIS OF THE TURBULENT SWIRL FLOW IN PIPE
Апстракт
Here is discussed Kolmogorov’s law in the study of the turbulent swirl flow in pipe on the
axial fan pressure side. This fan generates Rankine vortex where four zones are distinguished
(vortex core region, shear stress region, sound flow region and boundary layer). In Figure 1 is
presented spectral density of circumferential velocity fluctuations till frequency f = 200 Hz in
the function of the frequency, i.e. ww Φ (f ) , obtained on the basis of the velocity field
measured by use of the laser Doppler anemometry (LDA) [4]. Fan rotation speed is 1500 rpm
which corresponds to the frequency f = 25 Hz. Achieved high Reynolds number, calculated
on the basis of the average velocity Um = 4Q/(D2π), where Q is volume flow rate and D is
pipe inner diameter, is Re = UmD/ν = 277018, where ν is kinematic viscosity. Here is applied
one-component LDA system for measurements of three velocity components (axial U, radial
V and circumferential W), subsequently.
Кључне речи:
Kolmogorov law / turbulence / swirl flow / turbomachineryИзвор:
Booklet of abstracts Symposium “Nonlinear dynamics –scientific work of Prof. Dr Katica (Stevanović) Hedrih”, Belgrade, 04.-06. September 2019., pp. 71, 2019Издавач:
- Mathematical Institute of SASA
Колекције
Институција/група
Mašinski fakultetTY - CONF AU - Čantrak, Đorđe AU - Janković, Novica AU - Ilić, Dejan PY - 2019 UR - https://machinery.mas.bg.ac.rs/handle/123456789/5280 AB - Here is discussed Kolmogorov’s law in the study of the turbulent swirl flow in pipe on the axial fan pressure side. This fan generates Rankine vortex where four zones are distinguished (vortex core region, shear stress region, sound flow region and boundary layer). In Figure 1 is presented spectral density of circumferential velocity fluctuations till frequency f = 200 Hz in the function of the frequency, i.e. ww Φ (f ) , obtained on the basis of the velocity field measured by use of the laser Doppler anemometry (LDA) [4]. Fan rotation speed is 1500 rpm which corresponds to the frequency f = 25 Hz. Achieved high Reynolds number, calculated on the basis of the average velocity Um = 4Q/(D2π), where Q is volume flow rate and D is pipe inner diameter, is Re = UmD/ν = 277018, where ν is kinematic viscosity. Here is applied one-component LDA system for measurements of three velocity components (axial U, radial V and circumferential W), subsequently. PB - Mathematical Institute of SASA C3 - Booklet of abstracts Symposium “Nonlinear dynamics –scientific work of Prof. Dr Katica (Stevanović) Hedrih”, Belgrade, 04.-06. September 2019., pp. 71 T1 - KOLMOGOROV LAW IN ANALYSIS OF THE TURBULENT SWIRL FLOW IN PIPE UR - https://hdl.handle.net/21.15107/rcub_machinery_5280 ER -
@conference{ author = "Čantrak, Đorđe and Janković, Novica and Ilić, Dejan", year = "2019", abstract = "Here is discussed Kolmogorov’s law in the study of the turbulent swirl flow in pipe on the axial fan pressure side. This fan generates Rankine vortex where four zones are distinguished (vortex core region, shear stress region, sound flow region and boundary layer). In Figure 1 is presented spectral density of circumferential velocity fluctuations till frequency f = 200 Hz in the function of the frequency, i.e. ww Φ (f ) , obtained on the basis of the velocity field measured by use of the laser Doppler anemometry (LDA) [4]. Fan rotation speed is 1500 rpm which corresponds to the frequency f = 25 Hz. Achieved high Reynolds number, calculated on the basis of the average velocity Um = 4Q/(D2π), where Q is volume flow rate and D is pipe inner diameter, is Re = UmD/ν = 277018, where ν is kinematic viscosity. Here is applied one-component LDA system for measurements of three velocity components (axial U, radial V and circumferential W), subsequently.", publisher = "Mathematical Institute of SASA", journal = "Booklet of abstracts Symposium “Nonlinear dynamics –scientific work of Prof. Dr Katica (Stevanović) Hedrih”, Belgrade, 04.-06. September 2019., pp. 71", title = "KOLMOGOROV LAW IN ANALYSIS OF THE TURBULENT SWIRL FLOW IN PIPE", url = "https://hdl.handle.net/21.15107/rcub_machinery_5280" }
Čantrak, Đ., Janković, N.,& Ilić, D.. (2019). KOLMOGOROV LAW IN ANALYSIS OF THE TURBULENT SWIRL FLOW IN PIPE. in Booklet of abstracts Symposium “Nonlinear dynamics –scientific work of Prof. Dr Katica (Stevanović) Hedrih”, Belgrade, 04.-06. September 2019., pp. 71 Mathematical Institute of SASA.. https://hdl.handle.net/21.15107/rcub_machinery_5280
Čantrak Đ, Janković N, Ilić D. KOLMOGOROV LAW IN ANALYSIS OF THE TURBULENT SWIRL FLOW IN PIPE. in Booklet of abstracts Symposium “Nonlinear dynamics –scientific work of Prof. Dr Katica (Stevanović) Hedrih”, Belgrade, 04.-06. September 2019., pp. 71. 2019;. https://hdl.handle.net/21.15107/rcub_machinery_5280 .
Čantrak, Đorđe, Janković, Novica, Ilić, Dejan, "KOLMOGOROV LAW IN ANALYSIS OF THE TURBULENT SWIRL FLOW IN PIPE" in Booklet of abstracts Symposium “Nonlinear dynamics –scientific work of Prof. Dr Katica (Stevanović) Hedrih”, Belgrade, 04.-06. September 2019., pp. 71 (2019), https://hdl.handle.net/21.15107/rcub_machinery_5280 .