On streamwise structures in boundary layer under adverse pressure gradient on inclined plate

• Autorzy: Uruba V. , Prochazka P. , Skala V.

Identyfikatory

DOI

10.17466/tq2018/22.3/f

• Języki publikacji: EN

Abstrakty

EN

The presented study is focused on experimental investigation of a boundary layer on a flat plate in an adverse pressure gradient. The flat plate is placed in a regular flow, the pressure gradient is generated by the plate inclination. The preceding studies deal with the structure of the wake behind the plate, the presented study concentrates on the flow structureclose to the suction surface of the plate. The dynamical behavior of the flow structures is studied in details with respect to the topology in the streamwise direction. In spite of the fact that thetime-mean flow field is close to 2D, more or less constant along the span, the instantaneous structures topology is fully 3D. Rather oblique structures are detected instead of those oriented in the streamwise direction. The patterns are travelling in the streamwise direction along the plate.

Słowa kluczowe

EN

boundary layer; adverse pressure gradient; inclined plate; proper orthogonal decomposition; POD; oscillation pattern decomposition; OPD

• Wydawca: Politechnika Gdańska
• Czasopismo: TASK Quarterly : scientific bulletin of Academic Computer Centre in Gdansk
• Rocznik: 2018
• Tom: Vol. 22, No 3
• Strony: 255--267
• Opis fizyczny: Bibliogr. 9 poz., rys., tab.

Twórcy

autor

Uruba V.

• Institute of Thermomechanics of the CAS, v. v. i.Dolejškova 5, Praha 8, Czech Republic
• University of West Bohemia, Faculty of Mechanical Engineering, Department of Power System Engineering, Universitní 8, Plzeň, Czech Republic

autor

Prochazka P.

• Institute of Thermomechanics of the CAS, v. v. i.Dolejškova 5, Praha 8, Czech Republic

autor

Skala V.

• Institute of Thermomechanics of the CAS, v. v. i.Dolejškova 5, Praha 8, Czech Republic

Bibliografia

• [1] Uruba V, Pavlík D, Procházka P, Skála V and Kopecký V 2017 EPJWeb of Conferences 143 2137
• [2] Uruba V, Pátek Z, Procházka P, Skála V, Zacho D and Kulhánek R 2018 EPJ Web of Conferences 180 2111
• [3] Uruba V, Procházka P and Skála V 2018 EPJ Web of Conferences180 2112
• [4] Procházka P, Uruba V and Skála V 2018 Journal of Physics Conference Series1101 UNSP 12026
• [5] Hoffman J and Johnsson C 2009 Normat 57(4)1
• [6] Lumley J L 1967 Atm. Turb. and Radio Wave Prop.166, Yaglom and Tatarsky eds.,Nauka, Moskva
• [7] Hasselmann K 1988 Journal of Geophysical Research 93(D9)11
• [8] Uruba V 2012 EPJ Web of Conferences 25 1095
• [9] Uruba V 2015 Journal of Fluids and Structures 55 372

Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).